diff --git a/Directory.Build.props b/Directory.Build.props
index e5e9cac44a..d4226a9a55 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -20,11 +20,15 @@
     <CodeAnalysisRuleSet>$(MSBuildThisFileDirectory)BotBuilder-DotNet.ruleset</CodeAnalysisRuleSet>
     <RunSettingsFilePath>$(MSBuildThisFileDirectory)\CodeCoverage.runsettings</RunSettingsFilePath>
   </PropertyGroup>
-  
+
   <ItemGroup>
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="all" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Update="Microsoft.CodeAnalysis.NetAnalyzers" Version="9.0.0" PrivateAssets="all" />
+  </ItemGroup>
+
   <PropertyGroup>
     <Company>Microsoft</Company>
 
diff --git a/FunctionalTests/Microsoft.Bot.Builder.FunctionalTests/Microsoft.Bot.Builder.FunctionalTests.csproj b/FunctionalTests/Microsoft.Bot.Builder.FunctionalTests/Microsoft.Bot.Builder.FunctionalTests.csproj
index 05d47c055b..666676179c 100644
--- a/FunctionalTests/Microsoft.Bot.Builder.FunctionalTests/Microsoft.Bot.Builder.FunctionalTests.csproj
+++ b/FunctionalTests/Microsoft.Bot.Builder.FunctionalTests/Microsoft.Bot.Builder.FunctionalTests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <IsPackable>false</IsPackable>
     <Configurations>Debug;Release;</Configurations>
   </PropertyGroup>
diff --git a/build/onebranch/ci-api-validation-steps.yml b/build/onebranch/ci-api-validation-steps.yml
index 126713d063..9529cec3cb 100644
--- a/build/onebranch/ci-api-validation-steps.yml
+++ b/build/onebranch/ci-api-validation-steps.yml
@@ -2,7 +2,7 @@ steps:
 - task: DownloadPipelineArtifact@2
   displayName: 'Download BotBuilderDLLs from Artifacts'
   inputs:
-    artifactName: 'BotBuilderDLLs-Debug-Windows-net8'
+    artifactName: 'BotBuilderDLLs-Debug-Windows-net9'
     targetPath: '$(System.ArtifactsDirectory)/OutputDlls'
 
 - task: DownloadPipelineArtifact@2
diff --git a/build/onebranch/ci-test-steps.yml b/build/onebranch/ci-test-steps.yml
index 3484709eaa..a5efb579f0 100644
--- a/build/onebranch/ci-test-steps.yml
+++ b/build/onebranch/ci-test-steps.yml
@@ -20,32 +20,32 @@ steps:
     customCommand: 'install -g @microsoft/botframework-cli@next'
 
 - task: UseDotNet@2
-  displayName: "Install .NET Core 6.0"
+  displayName: "Install .NET Core 8.0"
   continueOnError: true
   inputs:
     packageType: "sdk"
-    version: 6.x
-  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net6'))
+    version: 8.x
+  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net8'))
 
 - task: DotNetCoreCLI@2
-  displayName: 'dotnet test (release) 6.0'
+  displayName: 'dotnet test (release) 8.0'
   inputs:
     command: test
     projects: |
      Tests/**/*Tests.csproj
 
-    arguments: '-v n  -f net6.0 --configuration release --no-build --no-restore --filter "TestCategory!=IgnoreInAutomatedBuild&TestCategory!=FunctionalTests" --collect:"Code Coverage" --settings $(Build.SourcesDirectory)\CodeCoverage.runsettings'
-  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net6'))
+    arguments: '-v n  -f net8.0 --configuration release --no-build --no-restore --filter "TestCategory!=IgnoreInAutomatedBuild&TestCategory!=FunctionalTests" --collect:"Code Coverage" --settings $(Build.SourcesDirectory)\CodeCoverage.runsettings'
+  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net8'))
 
 - task: DotNetCoreCLI@2
-  displayName: 'dotnet test (release) 8.0'
+  displayName: 'dotnet test (release) 9.0'
   inputs:
     command: test
     projects: |
      Tests/**/*Tests.csproj
 
-    arguments: '-v n  -f net8.0 --configuration release --no-build --no-restore --filter "TestCategory!=IgnoreInAutomatedBuild&TestCategory!=FunctionalTests" --collect:"Code Coverage" --settings $(Build.SourcesDirectory)\CodeCoverage.runsettings'
-  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net8'))
+    arguments: '-v n  -f net9.0 --configuration release --no-build --no-restore --filter "TestCategory!=IgnoreInAutomatedBuild&TestCategory!=FunctionalTests" --collect:"Code Coverage" --settings $(Build.SourcesDirectory)\CodeCoverage.runsettings'
+  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net9'))
 
 - powershell: |
    # This task copies the code coverage file created by dotnet test into a well known location. In all
diff --git a/build/onebranch/pr.yml b/build/onebranch/pr.yml
index afd69e602c..4323c6321b 100644
--- a/build/onebranch/pr.yml
+++ b/build/onebranch/pr.yml
@@ -42,34 +42,34 @@ variables:
 stages:
 - stage: Build
   jobs:
-  - job: Debug_Windows_Configuration_6
+  - job: Debug_Windows_Configuration_8
     variables:
       BuildConfiguration: Debug-Windows
-      BuildTarget: 'net6' # set the TargetFramework property for tests to use net6.0
+      BuildTarget: 'net8' # set the TargetFramework property for tests to use net8.0
     steps:
     - template: ci-build-steps.yml
     - template: ci-test-steps.yml
     - template: ci-component-detection-steps.yml
-  - job: Debug_Windows_Configuration_8
+  - job: Debug_Windows_Configuration_9
     variables:
       BuildConfiguration: Debug-Windows
-      BuildTarget: 'net8' # set the TargetFramework property for tests to use net8.0
+      BuildTarget: 'net9' # set the TargetFramework property for tests to use net9.0
     steps:
     - template: ci-build-steps.yml
     - template: ci-test-steps.yml
     - template: ci-component-detection-steps.yml
-  - job: Release_Windows_Configuration_6
+  - job: Release_Windows_Configuration_8
     variables:
       BuildConfiguration: Release-Windows
-      BuildTarget: 'net6' # set the TargetFramework property for tests to use net6.0
+      BuildTarget: 'net8' # set the TargetFramework property for tests to use net8.0
     steps:
     - template: ci-build-steps.yml
     - template: ci-test-steps.yml
     - template: ci-component-detection-steps.yml
-  - job: Release_Windows_Configuration_8
+  - job: Release_Windows_Configuration_9
     variables:
       BuildConfiguration: Release-Windows
-      BuildTarget: 'net8' # set the TargetFramework property for tests to use net8.0
+      BuildTarget: 'net9' # set the TargetFramework property for tests to use net9.0
       PublishCoverage: true
     steps:
     - template: ci-build-steps.yml
diff --git a/build/yaml/botbuilder-dotnet-ci-mac.yml b/build/yaml/botbuilder-dotnet-ci-mac.yml
index 119445adf4..f225c08bce 100644
--- a/build/yaml/botbuilder-dotnet-ci-mac.yml
+++ b/build/yaml/botbuilder-dotnet-ci-mac.yml
@@ -19,14 +19,14 @@ variables:
 steps:
 # Note: Template ci-build-steps.yml is not supported in macOS because it calls VSBuild@1 in order to build the Windows-only ASP.NET Desktop assemblies.
 - task: UseDotNet@2
-  displayName: 'Use .Net sdk 6.0'
+  displayName: 'Use .Net sdk 8.0'
   inputs:
-    version: 6.0.x
+    version: 8.0.x
 
 - task: UseDotNet@2
-  displayName: 'Use .Net sdk 8.0'
+  displayName: 'Use .Net sdk 9.0'
   inputs:
-    version: 8.0.x
+    version: 9.0.x
 
 - powershell: 'gci env:* | sort-object name | Format-Table -AutoSize -Wrap'
   displayName: 'Display env vars'
diff --git a/build/yaml/botbuilder-dotnet-ci.yml b/build/yaml/botbuilder-dotnet-ci.yml
index 50afce3942..a108d6ae12 100644
--- a/build/yaml/botbuilder-dotnet-ci.yml
+++ b/build/yaml/botbuilder-dotnet-ci.yml
@@ -42,31 +42,31 @@ variables:
 stages:
 - stage: Build
   jobs:
-  - job: Debug_Windows_Configuration_6
+  - job: Debug_Windows_Configuration_8
     variables:
       BuildConfiguration: Debug-Windows
-      BuildTarget: 'net6' # set the TargetFramework property for tests to use net6.0
+      BuildTarget: 'net8' # set the TargetFramework property for tests to use net8.0
     steps:
     - template: ci-build-steps.yml
     - template: ci-test-steps.yml
-  - job: Debug_Windows_Configuration_8
+  - job: Debug_Windows_Configuration_9
     variables:
       BuildConfiguration: Debug-Windows
-      BuildTarget: 'net8' # set the TargetFramework property for tests to use net8.0
+      BuildTarget: 'net9' # set the TargetFramework property for tests to use net9.0
     steps:
     - template: ci-build-steps.yml
     - template: ci-test-steps.yml
-  - job: Release_Windows_Configuration_6
+  - job: Release_Windows_Configuration_8
     variables:
       BuildConfiguration: Release-Windows
-      BuildTarget: 'net6' # set the TargetFramework property for tests to use net6.0
+      BuildTarget: 'net8' # set the TargetFramework property for tests to use net8.0
     steps:
     - template: ci-build-steps.yml
     - template: ci-test-steps.yml
-  - job: Release_Windows_Configuration_8
+  - job: Release_Windows_Configuration_9
     variables:
       BuildConfiguration: Release-Windows
-      BuildTarget: 'net8' # set the TargetFramework property for tests to use net8.0
+      BuildTarget: 'net9' # set the TargetFramework property for tests to use net9.0
       PublishCoverage: true
     steps:
     - template: ci-build-steps.yml
diff --git a/build/yaml/ci-api-validation-steps.yml b/build/yaml/ci-api-validation-steps.yml
index 126713d063..9529cec3cb 100644
--- a/build/yaml/ci-api-validation-steps.yml
+++ b/build/yaml/ci-api-validation-steps.yml
@@ -2,7 +2,7 @@ steps:
 - task: DownloadPipelineArtifact@2
   displayName: 'Download BotBuilderDLLs from Artifacts'
   inputs:
-    artifactName: 'BotBuilderDLLs-Debug-Windows-net8'
+    artifactName: 'BotBuilderDLLs-Debug-Windows-net9'
     targetPath: '$(System.ArtifactsDirectory)/OutputDlls'
 
 - task: DownloadPipelineArtifact@2
diff --git a/build/yaml/ci-test-steps.yml b/build/yaml/ci-test-steps.yml
index 3484709eaa..a5efb579f0 100644
--- a/build/yaml/ci-test-steps.yml
+++ b/build/yaml/ci-test-steps.yml
@@ -20,32 +20,32 @@ steps:
     customCommand: 'install -g @microsoft/botframework-cli@next'
 
 - task: UseDotNet@2
-  displayName: "Install .NET Core 6.0"
+  displayName: "Install .NET Core 8.0"
   continueOnError: true
   inputs:
     packageType: "sdk"
-    version: 6.x
-  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net6'))
+    version: 8.x
+  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net8'))
 
 - task: DotNetCoreCLI@2
-  displayName: 'dotnet test (release) 6.0'
+  displayName: 'dotnet test (release) 8.0'
   inputs:
     command: test
     projects: |
      Tests/**/*Tests.csproj
 
-    arguments: '-v n  -f net6.0 --configuration release --no-build --no-restore --filter "TestCategory!=IgnoreInAutomatedBuild&TestCategory!=FunctionalTests" --collect:"Code Coverage" --settings $(Build.SourcesDirectory)\CodeCoverage.runsettings'
-  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net6'))
+    arguments: '-v n  -f net8.0 --configuration release --no-build --no-restore --filter "TestCategory!=IgnoreInAutomatedBuild&TestCategory!=FunctionalTests" --collect:"Code Coverage" --settings $(Build.SourcesDirectory)\CodeCoverage.runsettings'
+  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net8'))
 
 - task: DotNetCoreCLI@2
-  displayName: 'dotnet test (release) 8.0'
+  displayName: 'dotnet test (release) 9.0'
   inputs:
     command: test
     projects: |
      Tests/**/*Tests.csproj
 
-    arguments: '-v n  -f net8.0 --configuration release --no-build --no-restore --filter "TestCategory!=IgnoreInAutomatedBuild&TestCategory!=FunctionalTests" --collect:"Code Coverage" --settings $(Build.SourcesDirectory)\CodeCoverage.runsettings'
-  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net8'))
+    arguments: '-v n  -f net9.0 --configuration release --no-build --no-restore --filter "TestCategory!=IgnoreInAutomatedBuild&TestCategory!=FunctionalTests" --collect:"Code Coverage" --settings $(Build.SourcesDirectory)\CodeCoverage.runsettings'
+  condition: and(succeeded(), eq(variables['BuildConfiguration'],'Release-Windows'), eq(variables['BuildTarget'],'net9'))
 
 - powershell: |
    # This task copies the code coverage file created by dotnet test into a well known location. In all
diff --git a/build/yaml/functional-test-setup-steps.yml b/build/yaml/functional-test-setup-steps.yml
index 0265ffe5c3..d683f20145 100644
--- a/build/yaml/functional-test-setup-steps.yml
+++ b/build/yaml/functional-test-setup-steps.yml
@@ -8,7 +8,7 @@ steps:
     command: publish
     publishWebProjects: false
     projects: '$(System.DefaultWorkingDirectory)\tests\Microsoft.Bot.Builder.TestBot\Microsoft.Bot.Builder.TestBot.csproj'
-    arguments: '-r linux-x64 --output $(System.DefaultWorkingDirectory)\tests\Microsoft.Bot.Builder.TestBot\PublishedBot --configuration $(TestConfiguration) --framework net8.0'
+    arguments: '-r linux-x64 --output $(System.DefaultWorkingDirectory)\tests\Microsoft.Bot.Builder.TestBot\PublishedBot --configuration $(TestConfiguration) --framework net9.0'
 
 - task: CopyFiles@2
   displayName: 'Copy root Directory.Build.props to staging'
diff --git a/libraries/Microsoft.Bot.AdaptiveExpressions.Core/Microsoft.Bot.AdaptiveExpressions.Core.csproj b/libraries/Microsoft.Bot.AdaptiveExpressions.Core/Microsoft.Bot.AdaptiveExpressions.Core.csproj
index eca5eb9122..78fa13d43b 100644
--- a/libraries/Microsoft.Bot.AdaptiveExpressions.Core/Microsoft.Bot.AdaptiveExpressions.Core.csproj
+++ b/libraries/Microsoft.Bot.AdaptiveExpressions.Core/Microsoft.Bot.AdaptiveExpressions.Core.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net8.0;net9.0</TargetFrameworks>
     <Version Condition=" '$(ReleasePackageVersion)' == '' ">$(LocalPackageVersion)</Version>
     <Version Condition=" '$(ReleasePackageVersion)' != '' ">$(ReleasePackageVersion)</Version>
     <PackageVersion Condition=" '$(ReleasePackageVersion)' == '' ">$(LocalPackageVersion)</PackageVersion>
diff --git a/libraries/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.csproj b/libraries/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.csproj
index 4399e04e88..9551114aef 100644
--- a/libraries/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.csproj
+++ b/libraries/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.csproj
@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net8.0;net9.0</TargetFrameworks>
     <PackageId>Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime</PackageId>
     <Description>Library for building Adaptive Runtime bots using the Bot Framework SDK</Description>
     <Summary>Library for building Adaptive Runtime bots using the Bot Framework SDK</Summary>
@@ -22,11 +22,7 @@
     <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
-    <FrameworkReference Include="Microsoft.AspNetCore.App" />
-  </ItemGroup>
-  
-  <ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'net8.0' Or '$(TargetFramework)' == 'net9.0'">
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
   </ItemGroup>
 
diff --git a/libraries/Microsoft.Bot.Streaming/Microsoft.Bot.Streaming.csproj b/libraries/Microsoft.Bot.Streaming/Microsoft.Bot.Streaming.csproj
index 88e3473831..20b7fa343d 100644
--- a/libraries/Microsoft.Bot.Streaming/Microsoft.Bot.Streaming.csproj
+++ b/libraries/Microsoft.Bot.Streaming/Microsoft.Bot.Streaming.csproj
@@ -11,7 +11,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net8.0;net9.0</TargetFrameworks>
     <PackageId>Microsoft.Bot.Streaming</PackageId>
     <Description>Streaming library for the Bot Framework SDK</Description>
     <Summary>Streaming library for the Bot Framework SDK</Summary>
@@ -30,11 +30,7 @@
     <PackageReference Include="Microsoft.Net.Http.Headers" Version="2.1.0" />
   </ItemGroup>
   
-  <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
-    <FrameworkReference Include="Microsoft.AspNetCore.App" />
-  </ItemGroup>
-
-  <ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'net8.0' Or '$(TargetFramework)' == 'net9.0'">
 	  <FrameworkReference Include="Microsoft.AspNetCore.App" />
   </ItemGroup>
 
diff --git a/libraries/integration/Microsoft.Bot.Builder.Integration.ApplicationInsights.Core/Microsoft.Bot.Builder.Integration.ApplicationInsights.Core.csproj b/libraries/integration/Microsoft.Bot.Builder.Integration.ApplicationInsights.Core/Microsoft.Bot.Builder.Integration.ApplicationInsights.Core.csproj
index 4fbf6ee961..21812114bb 100644
--- a/libraries/integration/Microsoft.Bot.Builder.Integration.ApplicationInsights.Core/Microsoft.Bot.Builder.Integration.ApplicationInsights.Core.csproj
+++ b/libraries/integration/Microsoft.Bot.Builder.Integration.ApplicationInsights.Core/Microsoft.Bot.Builder.Integration.ApplicationInsights.Core.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net8.0;net9.0</TargetFrameworks>
     <PackageId>Microsoft.Bot.Builder.Integration.ApplicationInsights.Core</PackageId>
     <Description>This library integrates the Microsoft Bot Builder SDK with Application Insights.</Description>
     <Summary>This library provides integration between the Microsoft Bot Builder SDK and Application Insights.</Summary>
@@ -20,15 +20,7 @@
     <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
-    <FrameworkReference Include="Microsoft.AspNetCore.App" />
-    <PackageReference Include="System.Drawing.Common" Version="8.0.7" />
-    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.22.0" />    
-    <!-- Force Microsoft.AspNetCore.Http to a safe version. -->
-    <PackageReference Include="Microsoft.AspNetCore.Http" Version="2.2.2" />
-  </ItemGroup>
-
-  <ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'net8.0' Or '$(TargetFramework)' == 'net9.0'">
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="System.Drawing.Common" Version="8.0.7" />
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.22.0" />    
diff --git a/libraries/integration/Microsoft.Bot.Builder.Integration.AspNet.Core/Microsoft.Bot.Builder.Integration.AspNet.Core.csproj b/libraries/integration/Microsoft.Bot.Builder.Integration.AspNet.Core/Microsoft.Bot.Builder.Integration.AspNet.Core.csproj
index 234496b7f2..1a60ead1e6 100644
--- a/libraries/integration/Microsoft.Bot.Builder.Integration.AspNet.Core/Microsoft.Bot.Builder.Integration.AspNet.Core.csproj
+++ b/libraries/integration/Microsoft.Bot.Builder.Integration.AspNet.Core/Microsoft.Bot.Builder.Integration.AspNet.Core.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net8.0;net9.0</TargetFrameworks>
     <Description>This library integrates the Microsoft Bot Builder SDK with ASP.NET Core. It offers idiomatic configuration APIs in addition to providing all the plumbing to direct incoming bot messages to a configured bot.</Description>
     <Summary>This library provides integration between the Microsoft Bot Builder SDK and ASP.NET Core.</Summary>
   </PropertyGroup>
@@ -19,11 +19,7 @@
     <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
-    <FrameworkReference Include="Microsoft.AspNetCore.App" />
-  </ItemGroup>
-
-  <ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'net8.0' Or '$(TargetFramework)' == 'net9.0'">
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
   </ItemGroup>
 
diff --git a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.PrimaryTestBot/Microsoft.Bot.Builder.Adapters.Facebook.PrimaryTestBot.csproj b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.PrimaryTestBot/Microsoft.Bot.Builder.Adapters.Facebook.PrimaryTestBot.csproj
index 0ed20c5ade..fd6c93b05b 100644
--- a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.PrimaryTestBot/Microsoft.Bot.Builder.Adapters.Facebook.PrimaryTestBot.csproj
+++ b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.PrimaryTestBot/Microsoft.Bot.Builder.Adapters.Facebook.PrimaryTestBot.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <UserSecretsId>594af4a1-e396-4609-8198-d665eb0c1f78</UserSecretsId>
   </PropertyGroup>
 
diff --git a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.SecondaryTestBot/Microsoft.Bot.Builder.Adapters.Facebook.SecondaryTestBot.csproj b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.SecondaryTestBot/Microsoft.Bot.Builder.Adapters.Facebook.SecondaryTestBot.csproj
index f90ab38a58..dbd7c51063 100644
--- a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.SecondaryTestBot/Microsoft.Bot.Builder.Adapters.Facebook.SecondaryTestBot.csproj
+++ b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.SecondaryTestBot/Microsoft.Bot.Builder.Adapters.Facebook.SecondaryTestBot.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <UserSecretsId>dae2bae8-b3c8-4b83-8b3c-4022669c7a20</UserSecretsId>
   </PropertyGroup>
 
diff --git a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.Tests/Microsoft.Bot.Builder.Adapters.Facebook.Tests.csproj b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.Tests/Microsoft.Bot.Builder.Adapters.Facebook.Tests.csproj
index 1d54dead94..fa44c8d5e2 100644
--- a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.Tests/Microsoft.Bot.Builder.Adapters.Facebook.Tests.csproj
+++ b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Facebook.Tests/Microsoft.Bot.Builder.Adapters.Facebook.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
 
diff --git a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Slack.TestBot/Microsoft.Bot.Builder.Adapters.Slack.TestBot.csproj b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Slack.TestBot/Microsoft.Bot.Builder.Adapters.Slack.TestBot.csproj
index 1db51760ce..539ef4e32b 100644
--- a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Slack.TestBot/Microsoft.Bot.Builder.Adapters.Slack.TestBot.csproj
+++ b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Slack.TestBot/Microsoft.Bot.Builder.Adapters.Slack.TestBot.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <!-- The SlackAPI package isn't signed, so supress the warning. There seems to not be a way to supress this for ONLY SlackAPI. -->
     <NoWarn>$(NoWarn),CS8002</NoWarn>
     <UserSecretsId>3c783a33-e2a5-4acd-99dd-581d563d47e3</UserSecretsId>
diff --git a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Slack.Tests/Microsoft.Bot.Builder.Adapters.Slack.Tests.csproj b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Slack.Tests/Microsoft.Bot.Builder.Adapters.Slack.Tests.csproj
index d8b43db03f..3cdf6b97a2 100644
--- a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Slack.Tests/Microsoft.Bot.Builder.Adapters.Slack.Tests.csproj
+++ b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Slack.Tests/Microsoft.Bot.Builder.Adapters.Slack.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
diff --git a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Twilio.TestBot/Microsoft.Bot.Builder.Adapters.Twilio.TestBot.csproj b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Twilio.TestBot/Microsoft.Bot.Builder.Adapters.Twilio.TestBot.csproj
index 0283b0ccb2..8570b755ce 100644
--- a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Twilio.TestBot/Microsoft.Bot.Builder.Adapters.Twilio.TestBot.csproj
+++ b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Twilio.TestBot/Microsoft.Bot.Builder.Adapters.Twilio.TestBot.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
diff --git a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Twilio.Tests/Microsoft.Bot.Builder.Adapters.Twilio.Tests.csproj b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Twilio.Tests/Microsoft.Bot.Builder.Adapters.Twilio.Tests.csproj
index f7b0d7a4d1..60c72ba7f1 100644
--- a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Twilio.Tests/Microsoft.Bot.Builder.Adapters.Twilio.Tests.csproj
+++ b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Twilio.Tests/Microsoft.Bot.Builder.Adapters.Twilio.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
 
diff --git a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Webex.TestBot/Microsoft.Bot.Builder.Adapters.Webex.TestBot.csproj b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Webex.TestBot/Microsoft.Bot.Builder.Adapters.Webex.TestBot.csproj
index 1932906696..eb81373500 100644
--- a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Webex.TestBot/Microsoft.Bot.Builder.Adapters.Webex.TestBot.csproj
+++ b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Webex.TestBot/Microsoft.Bot.Builder.Adapters.Webex.TestBot.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <!-- The WebExTeams package isn't signed, so supress the warning. -->
     <NoWarn>$(NoWarn),CS8002</NoWarn>
     <UserSecretsId>63730bc1-f7d4-4b32-8efe-ce03907b3e0a</UserSecretsId>
diff --git a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Webex.Tests/Microsoft.Bot.Builder.Adapters.Webex.Tests.csproj b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Webex.Tests/Microsoft.Bot.Builder.Adapters.Webex.Tests.csproj
index 8f72aa84fb..8dcc0efb80 100644
--- a/tests/Adapters/Microsoft.Bot.Builder.Adapters.Webex.Tests/Microsoft.Bot.Builder.Adapters.Webex.Tests.csproj
+++ b/tests/Adapters/Microsoft.Bot.Builder.Adapters.Webex.Tests/Microsoft.Bot.Builder.Adapters.Webex.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
     <!-- The Thrzn41.WebexTeams package isn't signed, so supress the warning. There seems to not be a way to supress this for ONLY Thrzn41.WebexTeams. -->
diff --git a/tests/AdaptiveExpressions.Tests/AdaptiveExpressions.Tests.csproj b/tests/AdaptiveExpressions.Tests/AdaptiveExpressions.Tests.csproj
index 26c6a98efd..014a655d1d 100644
--- a/tests/AdaptiveExpressions.Tests/AdaptiveExpressions.Tests.csproj
+++ b/tests/AdaptiveExpressions.Tests/AdaptiveExpressions.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
 
diff --git a/tests/Auth/bot-authentication/AuthenticationBot.csproj b/tests/Auth/bot-authentication/AuthenticationBot.csproj
index 7174f0cea8..49fea717f4 100644
--- a/tests/Auth/bot-authentication/AuthenticationBot.csproj
+++ b/tests/Auth/bot-authentication/AuthenticationBot.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
diff --git a/tests/Microsoft.Bot.AdaptiveExpressions.Core.AOT.Tests/Microsoft.Bot.AdaptiveExpressions.Core.AOT.Tests.csproj b/tests/Microsoft.Bot.AdaptiveExpressions.Core.AOT.Tests/Microsoft.Bot.AdaptiveExpressions.Core.AOT.Tests.csproj
index 79c422175f..8b8405472a 100644
--- a/tests/Microsoft.Bot.AdaptiveExpressions.Core.AOT.Tests/Microsoft.Bot.AdaptiveExpressions.Core.AOT.Tests.csproj
+++ b/tests/Microsoft.Bot.AdaptiveExpressions.Core.AOT.Tests/Microsoft.Bot.AdaptiveExpressions.Core.AOT.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0</TargetFrameworks>
+    <TargetFrameworks>net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
 
@@ -14,6 +14,11 @@
     <DefineConstants>$(DefineConstants);AOT</DefineConstants>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <NoWarn>$(NoWarn);IL2026</NoWarn>
+    <NoWarn>$(NoWarn);IL3050</NoWarn>
+  </PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="Antlr4.Runtime.Standard" Version="4.13.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
diff --git a/tests/Microsoft.Bot.AdaptiveExpressions.Core.Tests/Microsoft.Bot.AdaptiveExpressions.Core.Tests.csproj b/tests/Microsoft.Bot.AdaptiveExpressions.Core.Tests/Microsoft.Bot.AdaptiveExpressions.Core.Tests.csproj
index 926591529d..94296025e2 100644
--- a/tests/Microsoft.Bot.AdaptiveExpressions.Core.Tests/Microsoft.Bot.AdaptiveExpressions.Core.Tests.csproj
+++ b/tests/Microsoft.Bot.AdaptiveExpressions.Core.Tests/Microsoft.Bot.AdaptiveExpressions.Core.Tests.csproj
@@ -2,8 +2,8 @@
 
   <PropertyGroup>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
 
diff --git a/tests/Microsoft.Bot.Builder.AI.LUIS.Tests/Microsoft.Bot.Builder.AI.Luis.Tests.csproj b/tests/Microsoft.Bot.Builder.AI.LUIS.Tests/Microsoft.Bot.Builder.AI.Luis.Tests.csproj
index 61e13bc19d..8398d87adb 100644
--- a/tests/Microsoft.Bot.Builder.AI.LUIS.Tests/Microsoft.Bot.Builder.AI.Luis.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.AI.LUIS.Tests/Microsoft.Bot.Builder.AI.Luis.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.AI.Luis.TestUtils/Microsoft.Bot.Builder.AI.Luis.TestUtils.csproj b/tests/Microsoft.Bot.Builder.AI.Luis.TestUtils/Microsoft.Bot.Builder.AI.Luis.TestUtils.csproj
index 29def90d71..b9e2388119 100644
--- a/tests/Microsoft.Bot.Builder.AI.Luis.TestUtils/Microsoft.Bot.Builder.AI.Luis.TestUtils.csproj
+++ b/tests/Microsoft.Bot.Builder.AI.Luis.TestUtils/Microsoft.Bot.Builder.AI.Luis.TestUtils.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <Configurations>Debug;Release</Configurations>
   </PropertyGroup>
 
diff --git a/tests/Microsoft.Bot.Builder.AI.Orchestrator.Tests/Microsoft.Bot.Builder.AI.Orchestrator.Tests.csproj b/tests/Microsoft.Bot.Builder.AI.Orchestrator.Tests/Microsoft.Bot.Builder.AI.Orchestrator.Tests.csproj
index b0fb16d5ee..75e6e2a97f 100644
--- a/tests/Microsoft.Bot.Builder.AI.Orchestrator.Tests/Microsoft.Bot.Builder.AI.Orchestrator.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.AI.Orchestrator.Tests/Microsoft.Bot.Builder.AI.Orchestrator.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.AI.QnA.Tests/Microsoft.Bot.Builder.AI.QnA.Tests.csproj b/tests/Microsoft.Bot.Builder.AI.QnA.Tests/Microsoft.Bot.Builder.AI.QnA.Tests.csproj
index 60007cb3e3..c03451fc0c 100644
--- a/tests/Microsoft.Bot.Builder.AI.QnA.Tests/Microsoft.Bot.Builder.AI.QnA.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.AI.QnA.Tests/Microsoft.Bot.Builder.AI.QnA.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.Ai.LUISV3.tests/Microsoft.Bot.Builder.AI.LuisV3.Tests.csproj b/tests/Microsoft.Bot.Builder.Ai.LUISV3.tests/Microsoft.Bot.Builder.AI.LuisV3.Tests.csproj
index 8b5acff738..716aef5862 100644
--- a/tests/Microsoft.Bot.Builder.Ai.LUISV3.tests/Microsoft.Bot.Builder.AI.LuisV3.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Ai.LUISV3.tests/Microsoft.Bot.Builder.AI.LuisV3.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.ApplicationInsights.Tests/Microsoft.Bot.Builder.ApplicationInsights.Tests.csproj b/tests/Microsoft.Bot.Builder.ApplicationInsights.Tests/Microsoft.Bot.Builder.ApplicationInsights.Tests.csproj
index 071a4824e2..25c38366ba 100644
--- a/tests/Microsoft.Bot.Builder.ApplicationInsights.Tests/Microsoft.Bot.Builder.ApplicationInsights.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.ApplicationInsights.Tests/Microsoft.Bot.Builder.ApplicationInsights.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
@@ -17,6 +17,10 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
   </ItemGroup>
+  
+  <ItemGroup Condition="'$(TargetFramework)' == 'net9.0'">
+    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="9.0.1" />
+  </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\..\libraries\Microsoft.Bot.Builder.ApplicationInsights\Microsoft.Bot.Builder.ApplicationInsights.csproj" />
@@ -24,4 +28,5 @@
     <ProjectReference Include="..\..\libraries\Microsoft.Bot.Builder\Microsoft.Bot.Builder.csproj" />
     <ProjectReference Include="..\..\libraries\Microsoft.Bot.Schema\Microsoft.Bot.Schema.csproj" />
   </ItemGroup>
+
 </Project>
diff --git a/tests/Microsoft.Bot.Builder.Azure.Tests/Microsoft.Bot.Builder.Azure.Tests.csproj b/tests/Microsoft.Bot.Builder.Azure.Tests/Microsoft.Bot.Builder.Azure.Tests.csproj
index 2175bcb08f..95d58bf1c6 100644
--- a/tests/Microsoft.Bot.Builder.Azure.Tests/Microsoft.Bot.Builder.Azure.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Azure.Tests/Microsoft.Bot.Builder.Azure.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Profiling/Microsoft.Bot.Builder.Dialogs.Adaptive.Profiling.csproj b/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Profiling/Microsoft.Bot.Builder.Dialogs.Adaptive.Profiling.csproj
index 188786adfc..10317f6f30 100644
--- a/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Profiling/Microsoft.Bot.Builder.Dialogs.Adaptive.Profiling.csproj
+++ b/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Profiling/Microsoft.Bot.Builder.Dialogs.Adaptive.Profiling.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
diff --git a/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.Tests.csproj b/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.Tests.csproj
index 1f20170c96..911259aaa4 100644
--- a/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Templates.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Templates.Tests.csproj b/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Templates.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Templates.Tests.csproj
index 5472349718..41963e9593 100644
--- a/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Templates.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Templates.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Templates.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Templates.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
 
diff --git a/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Tests.csproj b/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Tests.csproj
index 4d1bd793c2..d20c89a421 100644
--- a/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Tests/Microsoft.Bot.Builder.Dialogs.Adaptive.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <Configurations>Debug;Release</Configurations>
     <!-- The MockHttp package isn't signed, so supress the warning. -->
diff --git a/tests/Microsoft.Bot.Builder.Dialogs.Debugging.Tests/Microsoft.Bot.Builder.Dialogs.Debugging.Tests.csproj b/tests/Microsoft.Bot.Builder.Dialogs.Debugging.Tests/Microsoft.Bot.Builder.Dialogs.Debugging.Tests.csproj
index 865df0f033..99f65801d5 100644
--- a/tests/Microsoft.Bot.Builder.Dialogs.Debugging.Tests/Microsoft.Bot.Builder.Dialogs.Debugging.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Dialogs.Debugging.Tests/Microsoft.Bot.Builder.Dialogs.Debugging.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
 
diff --git a/tests/Microsoft.Bot.Builder.Dialogs.Declarative.Tests/Microsoft.Bot.Builder.Dialogs.Declarative.Tests.csproj b/tests/Microsoft.Bot.Builder.Dialogs.Declarative.Tests/Microsoft.Bot.Builder.Dialogs.Declarative.Tests.csproj
index c54bc8b8d2..665a18b93e 100644
--- a/tests/Microsoft.Bot.Builder.Dialogs.Declarative.Tests/Microsoft.Bot.Builder.Dialogs.Declarative.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Dialogs.Declarative.Tests/Microsoft.Bot.Builder.Dialogs.Declarative.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
 
diff --git a/tests/Microsoft.Bot.Builder.Dialogs.Tests/Microsoft.Bot.Builder.Dialogs.Tests.csproj b/tests/Microsoft.Bot.Builder.Dialogs.Tests/Microsoft.Bot.Builder.Dialogs.Tests.csproj
index 2ae4d29126..7e3d0bb5f6 100644
--- a/tests/Microsoft.Bot.Builder.Dialogs.Tests/Microsoft.Bot.Builder.Dialogs.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Dialogs.Tests/Microsoft.Bot.Builder.Dialogs.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.LanguageGeneration.Tests/Microsoft.Bot.Builder.LanguageGeneration.Tests.csproj b/tests/Microsoft.Bot.Builder.LanguageGeneration.Tests/Microsoft.Bot.Builder.LanguageGeneration.Tests.csproj
index fd43c8a348..a3f8f1ef0e 100644
--- a/tests/Microsoft.Bot.Builder.LanguageGeneration.Tests/Microsoft.Bot.Builder.LanguageGeneration.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.LanguageGeneration.Tests/Microsoft.Bot.Builder.LanguageGeneration.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
 
diff --git a/tests/Microsoft.Bot.Builder.TemplateManager/Microsoft.Bot.Builder.TemplateManager.Tests.csproj b/tests/Microsoft.Bot.Builder.TemplateManager/Microsoft.Bot.Builder.TemplateManager.Tests.csproj
index 9c320e8b95..d1f21c22b6 100644
--- a/tests/Microsoft.Bot.Builder.TemplateManager/Microsoft.Bot.Builder.TemplateManager.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.TemplateManager/Microsoft.Bot.Builder.TemplateManager.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.TestBot.Json/Microsoft.Bot.Builder.TestBot.Json.csproj b/tests/Microsoft.Bot.Builder.TestBot.Json/Microsoft.Bot.Builder.TestBot.Json.csproj
index f5226e8a5a..9b407cde00 100644
--- a/tests/Microsoft.Bot.Builder.TestBot.Json/Microsoft.Bot.Builder.TestBot.Json.csproj
+++ b/tests/Microsoft.Bot.Builder.TestBot.Json/Microsoft.Bot.Builder.TestBot.Json.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <UserSecretsId>TestBot</UserSecretsId>
     <Configurations>Debug;Release</Configurations>
     <!-- The Jurrasic package isn't signed, so supress the warning. -->
diff --git a/tests/Microsoft.Bot.Builder.TestBot.Tests/Microsoft.Bot.Builder.TestBot.Tests.csproj b/tests/Microsoft.Bot.Builder.TestBot.Tests/Microsoft.Bot.Builder.TestBot.Tests.csproj
index 5856ab1d08..3736c9e543 100644
--- a/tests/Microsoft.Bot.Builder.TestBot.Tests/Microsoft.Bot.Builder.TestBot.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.TestBot.Tests/Microsoft.Bot.Builder.TestBot.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <AssemblyName>Microsoft.Bot.Builder.TestBot.Tests</AssemblyName>
     <RootNamespace>Microsoft.BotBuilderSamples.Tests</RootNamespace>
diff --git a/tests/Microsoft.Bot.Builder.TestBot/Microsoft.Bot.Builder.TestBot.csproj b/tests/Microsoft.Bot.Builder.TestBot/Microsoft.Bot.Builder.TestBot.csproj
index 8f26dcc3b3..4d35ebd701 100644
--- a/tests/Microsoft.Bot.Builder.TestBot/Microsoft.Bot.Builder.TestBot.csproj
+++ b/tests/Microsoft.Bot.Builder.TestBot/Microsoft.Bot.Builder.TestBot.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <UserSecretsId>f277272c-9113-411f-addd-a4acfa9701a2</UserSecretsId>
     <RootNamespace>Microsoft.BotBuilderSamples</RootNamespace>
   </PropertyGroup>
diff --git a/tests/Microsoft.Bot.Builder.TestBot/wwwroot/default.htm b/tests/Microsoft.Bot.Builder.TestBot/wwwroot/default.htm
index 1af048a674..80b737fec2 100644
--- a/tests/Microsoft.Bot.Builder.TestBot/wwwroot/default.htm
+++ b/tests/Microsoft.Bot.Builder.TestBot/wwwroot/default.htm
@@ -5,7 +5,7 @@
     <meta charset="utf-8" />
 </head>
 <body style="font-family:'Segoe UI'">
-    <h1>TestBot using ASP.Net 8</h1>
+    <h1>TestBot using ASP.Net 9</h1>
     <p>Describe your bot here and your terms of use etc.</p>
     <p>To debug your bot using the Bot Framework Emulator, paste this URL into the Emulator window:</p>
     <div style="padding-left: 50px;" id="botBaseUrl"></div>
diff --git a/tests/Microsoft.Bot.Builder.TestProtocol/Microsoft.Bot.Builder.TestProtocol.csproj b/tests/Microsoft.Bot.Builder.TestProtocol/Microsoft.Bot.Builder.TestProtocol.csproj
index 700d5827d8..112c6e31a4 100644
--- a/tests/Microsoft.Bot.Builder.TestProtocol/Microsoft.Bot.Builder.TestProtocol.csproj
+++ b/tests/Microsoft.Bot.Builder.TestProtocol/Microsoft.Bot.Builder.TestProtocol.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <UserSecretsId>1ae6e573-b022-4bd5-b6b5-7ea57e4977f8</UserSecretsId>
   </PropertyGroup>
 
diff --git a/tests/Microsoft.Bot.Builder.Testing.Tests/Microsoft.Bot.Builder.Testing.Tests.csproj b/tests/Microsoft.Bot.Builder.Testing.Tests/Microsoft.Bot.Builder.Testing.Tests.csproj
index 2e5d7bd9c3..bfb7c642b9 100644
--- a/tests/Microsoft.Bot.Builder.Testing.Tests/Microsoft.Bot.Builder.Testing.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Testing.Tests/Microsoft.Bot.Builder.Testing.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.Tests/Microsoft.Bot.Builder.Tests.csproj b/tests/Microsoft.Bot.Builder.Tests/Microsoft.Bot.Builder.Tests.csproj
index 2b3c4afcb0..bd9d858a31 100644
--- a/tests/Microsoft.Bot.Builder.Tests/Microsoft.Bot.Builder.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Tests/Microsoft.Bot.Builder.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Builder.Tests/Teams/TeamsActivityHandlerTests.cs b/tests/Microsoft.Bot.Builder.Tests/Teams/TeamsActivityHandlerTests.cs
index 4cc3263efb..12506422c5 100644
--- a/tests/Microsoft.Bot.Builder.Tests/Teams/TeamsActivityHandlerTests.cs
+++ b/tests/Microsoft.Bot.Builder.Tests/Teams/TeamsActivityHandlerTests.cs
@@ -1201,7 +1201,7 @@ void CaptureSend(Activity[] arg)
             Assert.Equal("OnTeamsMeetingStartAsync", bot.Record[1]);
             Assert.NotNull(activitiesToSend);
             Assert.Single(activitiesToSend);
-            Assert.Contains("12:01:02 AM", activitiesToSend[0].Text); // Date format differs between OSs, so we just Assert.Contains instead of Assert.Equals
+            Assert.Contains("12:01:02", activitiesToSend[0].Text); // Date format differs between OSs, so we just Assert.Contains instead of Assert.Equals
         }
 
         [Fact]
@@ -1234,7 +1234,7 @@ void CaptureSend(Activity[] arg)
             Assert.Equal("OnTeamsMeetingEndAsync", bot.Record[1]);
             Assert.NotNull(activitiesToSend);
             Assert.Single(activitiesToSend);
-            Assert.Contains("1:02:03 AM", activitiesToSend[0].Text); // Date format differs between OSs, so we just Assert.Contains instead of Assert.Equals
+            Assert.Contains("1:02:03", activitiesToSend[0].Text); // Date format differs between OSs, so we just Assert.Contains instead of Assert.Equals
         }
 
         [Fact]
diff --git a/tests/Microsoft.Bot.Builder.Transcripts.Tests/Microsoft.Bot.Builder.Transcripts.Tests.csproj b/tests/Microsoft.Bot.Builder.Transcripts.Tests/Microsoft.Bot.Builder.Transcripts.Tests.csproj
index 24f7e91042..2146f0bd58 100644
--- a/tests/Microsoft.Bot.Builder.Transcripts.Tests/Microsoft.Bot.Builder.Transcripts.Tests.csproj
+++ b/tests/Microsoft.Bot.Builder.Transcripts.Tests/Microsoft.Bot.Builder.Transcripts.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Configuration.Tests/Microsoft.Bot.Configuration.Tests.csproj b/tests/Microsoft.Bot.Configuration.Tests/Microsoft.Bot.Configuration.Tests.csproj
index 10ad7c96fb..fc4dd71ef2 100644
--- a/tests/Microsoft.Bot.Configuration.Tests/Microsoft.Bot.Configuration.Tests.csproj
+++ b/tests/Microsoft.Bot.Configuration.Tests/Microsoft.Bot.Configuration.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Connector.Streaming.Perf/Microsoft.Bot.Connector.Streaming.Perf.csproj b/tests/Microsoft.Bot.Connector.Streaming.Perf/Microsoft.Bot.Connector.Streaming.Perf.csproj
index e7fbe472a0..399f3f9a71 100644
--- a/tests/Microsoft.Bot.Connector.Streaming.Perf/Microsoft.Bot.Connector.Streaming.Perf.csproj
+++ b/tests/Microsoft.Bot.Connector.Streaming.Perf/Microsoft.Bot.Connector.Streaming.Perf.csproj
@@ -3,7 +3,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
 
diff --git a/tests/Microsoft.Bot.Connector.Streaming.Tests.Client/Microsoft.Bot.Connector.Streaming.Tests.Client.csproj b/tests/Microsoft.Bot.Connector.Streaming.Tests.Client/Microsoft.Bot.Connector.Streaming.Tests.Client.csproj
index c4eab565ea..89aa1f0de4 100644
--- a/tests/Microsoft.Bot.Connector.Streaming.Tests.Client/Microsoft.Bot.Connector.Streaming.Tests.Client.csproj
+++ b/tests/Microsoft.Bot.Connector.Streaming.Tests.Client/Microsoft.Bot.Connector.Streaming.Tests.Client.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/tests/Microsoft.Bot.Connector.Streaming.Tests.Server/Microsoft.Bot.Connector.Streaming.Tests.Server.csproj b/tests/Microsoft.Bot.Connector.Streaming.Tests.Server/Microsoft.Bot.Connector.Streaming.Tests.Server.csproj
index 2c914a3546..6de73e6083 100644
--- a/tests/Microsoft.Bot.Connector.Streaming.Tests.Server/Microsoft.Bot.Connector.Streaming.Tests.Server.csproj
+++ b/tests/Microsoft.Bot.Connector.Streaming.Tests.Server/Microsoft.Bot.Connector.Streaming.Tests.Server.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
diff --git a/tests/Microsoft.Bot.Connector.Streaming.Tests/Microsoft.Bot.Connector.Streaming.Tests.csproj b/tests/Microsoft.Bot.Connector.Streaming.Tests/Microsoft.Bot.Connector.Streaming.Tests.csproj
index 7587366d30..5dbb290a68 100644
--- a/tests/Microsoft.Bot.Connector.Streaming.Tests/Microsoft.Bot.Connector.Streaming.Tests.csproj
+++ b/tests/Microsoft.Bot.Connector.Streaming.Tests/Microsoft.Bot.Connector.Streaming.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Connector.Tests/AttachmentsTests.cs b/tests/Microsoft.Bot.Connector.Tests/AttachmentsTests.cs
index 0e8a4d92d2..6cec18ff13 100644
--- a/tests/Microsoft.Bot.Connector.Tests/AttachmentsTests.cs
+++ b/tests/Microsoft.Bot.Connector.Tests/AttachmentsTests.cs
@@ -138,7 +138,7 @@ await UseClientFor(async client =>
                 stream.Position = 0;
                 var length = stream.Length > int.MaxValue ? int.MaxValue : Convert.ToInt32(stream.Length);
                 var buffer = new byte[length];
-                stream.Read(buffer, 0, length);
+                stream.ReadExactly(buffer);
 
                 var actualAsString = Convert.ToBase64String(buffer, Base64FormattingOptions.None);
 
diff --git a/tests/Microsoft.Bot.Connector.Tests/Microsoft.Bot.Connector.Tests.csproj b/tests/Microsoft.Bot.Connector.Tests/Microsoft.Bot.Connector.Tests.csproj
index 0014aef311..cc62ceea72 100644
--- a/tests/Microsoft.Bot.Connector.Tests/Microsoft.Bot.Connector.Tests.csproj
+++ b/tests/Microsoft.Bot.Connector.Tests/Microsoft.Bot.Connector.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Schema.Tests/Microsoft.Bot.Schema.Tests.csproj b/tests/Microsoft.Bot.Schema.Tests/Microsoft.Bot.Schema.Tests.csproj
index f363d68fc0..1403646795 100644
--- a/tests/Microsoft.Bot.Schema.Tests/Microsoft.Bot.Schema.Tests.csproj
+++ b/tests/Microsoft.Bot.Schema.Tests/Microsoft.Bot.Schema.Tests.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Microsoft.Bot.Streaming.Tests/Microsoft.Bot.Streaming.Tests.csproj b/tests/Microsoft.Bot.Streaming.Tests/Microsoft.Bot.Streaming.Tests.csproj
index 9356f03676..10613b26e9 100644
--- a/tests/Microsoft.Bot.Streaming.Tests/Microsoft.Bot.Streaming.Tests.csproj
+++ b/tests/Microsoft.Bot.Streaming.Tests/Microsoft.Bot.Streaming.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
diff --git a/tests/Parsers/Microsoft.Bot.Builder.Parsers.LU.Tests/Microsoft.Bot.Builder.Parsers.LU.Tests.csproj b/tests/Parsers/Microsoft.Bot.Builder.Parsers.LU.Tests/Microsoft.Bot.Builder.Parsers.LU.Tests.csproj
index fcf9f0830b..55c3a580a5 100644
--- a/tests/Parsers/Microsoft.Bot.Builder.Parsers.LU.Tests/Microsoft.Bot.Builder.Parsers.LU.Tests.csproj
+++ b/tests/Parsers/Microsoft.Bot.Builder.Parsers.LU.Tests/Microsoft.Bot.Builder.Parsers.LU.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
diff --git a/tests/Skills/Bot1/Bot1.csproj b/tests/Skills/Bot1/Bot1.csproj
index acd671f4f5..f7bd4e0da8 100644
--- a/tests/Skills/Bot1/Bot1.csproj
+++ b/tests/Skills/Bot1/Bot1.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/tests/Skills/Bot2/Bot2.csproj b/tests/Skills/Bot2/Bot2.csproj
index acd671f4f5..f7bd4e0da8 100644
--- a/tests/Skills/Bot2/Bot2.csproj
+++ b/tests/Skills/Bot2/Bot2.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/tests/Skills/Bot3/Bot3.csproj b/tests/Skills/Bot3/Bot3.csproj
index acd671f4f5..f7bd4e0da8 100644
--- a/tests/Skills/Bot3/Bot3.csproj
+++ b/tests/Skills/Bot3/Bot3.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/tests/Skills/Child/Child.csproj b/tests/Skills/Child/Child.csproj
index e7d4b6730f..65e8e14476 100644
--- a/tests/Skills/Child/Child.csproj
+++ b/tests/Skills/Child/Child.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <UserSecretsId>f277272c-9113-411f-addd-a4acfa9701a2</UserSecretsId>
     <RootNamespace>Microsoft.BotBuilderSamples</RootNamespace>
   </PropertyGroup>
diff --git a/tests/Skills/Parent/Parent.csproj b/tests/Skills/Parent/Parent.csproj
index e02384503c..5d4152c5ea 100644
--- a/tests/Skills/Parent/Parent.csproj
+++ b/tests/Skills/Parent/Parent.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <UserSecretsId>f277272c-9113-411f-addd-a4acfa9701a2</UserSecretsId>
     <RootNamespace>Microsoft.BotBuilderSamples</RootNamespace>
   </PropertyGroup>
diff --git a/tests/integration/Microsoft.Bot.ApplicationInsights.Core.Tests/Microsoft.Bot.ApplicationInsights.Core.Tests.csproj b/tests/integration/Microsoft.Bot.ApplicationInsights.Core.Tests/Microsoft.Bot.ApplicationInsights.Core.Tests.csproj
index 48fddc7e51..b9e5a462af 100644
--- a/tests/integration/Microsoft.Bot.ApplicationInsights.Core.Tests/Microsoft.Bot.ApplicationInsights.Core.Tests.csproj
+++ b/tests/integration/Microsoft.Bot.ApplicationInsights.Core.Tests/Microsoft.Bot.ApplicationInsights.Core.Tests.csproj
@@ -1,22 +1,22 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>
   </PropertyGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'net6.0'">
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="6.0.4" />
-  </ItemGroup>
-  
   <ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.7" />
   </ItemGroup>
 
+  <ItemGroup Condition="'$(TargetFramework)' == 'net9.0'">
+    <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="9.0.1" />
+  </ItemGroup>
+  
   <ItemGroup>
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
diff --git a/tests/integration/Microsoft.Bot.Builder.Integration.AspNet.Core.Tests/Microsoft.Bot.Builder.Integration.AspNet.Core.Tests.csproj b/tests/integration/Microsoft.Bot.Builder.Integration.AspNet.Core.Tests/Microsoft.Bot.Builder.Integration.AspNet.Core.Tests.csproj
index ce630ea141..5612952c24 100644
--- a/tests/integration/Microsoft.Bot.Builder.Integration.AspNet.Core.Tests/Microsoft.Bot.Builder.Integration.AspNet.Core.Tests.csproj
+++ b/tests/integration/Microsoft.Bot.Builder.Integration.AspNet.Core.Tests/Microsoft.Bot.Builder.Integration.AspNet.Core.Tests.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework Condition="'$(BuildTarget)' == 'net6'">net6.0</TargetFramework>
     <TargetFramework Condition="'$(BuildTarget)' == 'net8'">net8.0</TargetFramework>
-    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net6.0;net8.0</TargetFrameworks>
+    <TargetFramework Condition="'$(BuildTarget)' == 'net9'">net9.0</TargetFramework>
+    <TargetFrameworks Condition="'$(BuildTarget)' == ''">net8.0;net9.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <Configurations>Debug;Release</Configurations>