diff --git a/src/libraries/System.Diagnostics.Process/tests/ProcessTests.cs b/src/libraries/System.Diagnostics.Process/tests/ProcessTests.cs
index afa66d916c2f5a..f7129caacd3fb5 100644
--- a/src/libraries/System.Diagnostics.Process/tests/ProcessTests.cs
+++ b/src/libraries/System.Diagnostics.Process/tests/ProcessTests.cs
@@ -287,6 +287,7 @@ public void SignalHandler_CanDisposeInHandler(PosixSignal signal)
             RemoteExecutor.IsSupported;
 
         [ConditionalTheory(typeof(ProcessTests), nameof(IsNotNanoServerAndRemoteExecutorSupported))]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/126936", TestPlatforms.Windows)]
         [InlineData(true)]
         [InlineData(false)]
         public void StartDetached_GrandchildSurvivesSignalingParent(bool enable)