diff --git a/src/Microsoft.Agents.A365.DevTools.Cli/Exceptions/Agent365Exception.cs b/src/Microsoft.Agents.A365.DevTools.Cli/Exceptions/Agent365Exception.cs
index 497526e1..bd1524b3 100644
--- a/src/Microsoft.Agents.A365.DevTools.Cli/Exceptions/Agent365Exception.cs
+++ b/src/Microsoft.Agents.A365.DevTools.Cli/Exceptions/Agent365Exception.cs
@@ -75,13 +75,13 @@ private static string BuildMessage(string errorCode, string issueDescription, Li
         var sb = new StringBuilder();
         sb.Append($"[{errorCode}] {issueDescription}");
         
-        if (errorDetails?.Count > 0)
-        {
-            sb.AppendLine();
-            foreach (var detail in errorDetails)
-            {
-                sb.AppendLine($"  � {detail}");
-            }
+        if (errorDetails?.Count > 0)
+        {
+            sb.AppendLine();
+            foreach (var detail in errorDetails)
+            {
+                sb.AppendLine($"  • {detail}");
+            }
         }
         
         return sb.ToString();
@@ -99,14 +99,14 @@ public virtual string GetFormattedMessage()
         sb.AppendLine($"Error: {IssueDescription}");
         sb.AppendLine();
         
-        // Error details
-        if (ErrorDetails.Count > 0)
-        {
-            foreach (var detail in ErrorDetails)
-            {
-                sb.AppendLine($"  � {detail}");
-            }
-            sb.AppendLine();
+        // Error details
+        if (ErrorDetails.Count > 0)
+        {
+            foreach (var detail in ErrorDetails)
+            {
+                sb.AppendLine($"  • {detail}");
+            }
+            sb.AppendLine();
         }
         
         // Mitigation steps
@@ -121,14 +121,14 @@ public virtual string GetFormattedMessage()
         }
         
         // Context information
-        if (Context.Count > 0)
-        {
-            sb.AppendLine("Context:");
-            foreach (var kvp in Context)
-            {
-                sb.AppendLine($"  � {kvp.Key}: {kvp.Value}");
-            }
-            sb.AppendLine();
+        if (Context.Count > 0)
+        {
+            sb.AppendLine("Context:");
+            foreach (var kvp in Context)
+            {
+                sb.AppendLine($"  • {kvp.Key}: {kvp.Value}");
+            }
+            sb.AppendLine();
         }
         
         return sb.ToString();
diff --git a/src/Microsoft.Agents.A365.DevTools.Cli/Exceptions/ConfigurationValidationException.cs b/src/Microsoft.Agents.A365.DevTools.Cli/Exceptions/ConfigurationValidationException.cs
index bfa869a9..ca58872a 100644
--- a/src/Microsoft.Agents.A365.DevTools.Cli/Exceptions/ConfigurationValidationException.cs
+++ b/src/Microsoft.Agents.A365.DevTools.Cli/Exceptions/ConfigurationValidationException.cs
@@ -76,7 +76,7 @@ private static List<string> BuildMitigationSteps(string configFilePath, List<Val
         {
             steps.Add("");
             steps.Add("Common Azure naming rules:");
-            steps.AddRange(contextualHelp.Select(h => $"  � {h}"));
+            steps.AddRange(contextualHelp.Select(h => $"  • {h}"));
             steps.Add("");
             steps.Add("See Azure naming conventions: https://learn.microsoft.com/azure/azure-resource-manager/management/resource-name-rules");
         }
diff --git a/src/Microsoft.Agents.A365.DevTools.Cli/Services/ConfigService.cs b/src/Microsoft.Agents.A365.DevTools.Cli/Services/ConfigService.cs
index d20d2a60..c1a3fd1c 100644
--- a/src/Microsoft.Agents.A365.DevTools.Cli/Services/ConfigService.cs
+++ b/src/Microsoft.Agents.A365.DevTools.Cli/Services/ConfigService.cs
@@ -312,7 +312,7 @@ public async Task<Agent365Config> LoadAsync(
             _logger?.LogError("Configuration validation failed:");
             foreach (var error in validationResult.Errors)
             {
-                _logger?.LogError("  � {Error}", error);
+                _logger?.LogError("  • {Error}", error);
             }
             
             // Convert validation errors to structured exception
@@ -328,7 +328,7 @@ public async Task<Agent365Config> LoadAsync(
         {
             foreach (var warning in validationResult.Warnings)
             {
-                _logger?.LogWarning("  � {Warning}", warning);
+                _logger?.LogWarning("  • {Warning}", warning);
             }
         }