diff --git a/src/Features/LanguageServer/Protocol/Features/Options/WorkspaceConfigurationService.cs b/src/Features/LanguageServer/Protocol/Features/Options/WorkspaceConfigurationService.cs
index 425a921a1dd22..9def0f584375c 100644
--- a/src/Features/LanguageServer/Protocol/Features/Options/WorkspaceConfigurationService.cs
+++ b/src/Features/LanguageServer/Protocol/Features/Options/WorkspaceConfigurationService.cs
@@ -25,5 +25,8 @@ public WorkspaceConfigurationService(IGlobalOptionService globalOptions)
 
         public WorkspaceConfigurationOptions Options
             => _lazyOptions ??= _globalOptions.GetWorkspaceConfigurationOptions();
+
+        internal void Clear()
+            => _lazyOptions = null;
     }
 }
diff --git a/src/VisualStudio/IntegrationTest/New.IntegrationTests/CSharp/CSharpSourceGenerators.cs b/src/VisualStudio/IntegrationTest/New.IntegrationTests/CSharp/CSharpSourceGenerators.cs
index 3f0559f503b35..8d149539517d5 100644
--- a/src/VisualStudio/IntegrationTest/New.IntegrationTests/CSharp/CSharpSourceGenerators.cs
+++ b/src/VisualStudio/IntegrationTest/New.IntegrationTests/CSharp/CSharpSourceGenerators.cs
@@ -80,8 +80,15 @@ public static void Main()
 
             if (invokeFromSourceGeneratedFile)
             {
+                var workspace = await TestServices.Shell.GetComponentModelServiceAsync<VisualStudioWorkspace>(HangMitigatingCancellationToken);
+
+                // clear configuration options already read by initialization above, so that the global option update below is effective:
+                var configurationService = (WorkspaceConfigurationService)workspace.Services.GetRequiredService<IWorkspaceConfigurationService>();
+                configurationService.Clear();
+
                 var globalOptions = await TestServices.Shell.GetComponentModelServiceAsync<IGlobalOptionService>(HangMitigatingCancellationToken);
                 globalOptions.SetGlobalOption(new OptionKey(WorkspaceConfigurationOptionsStorage.EnableOpeningSourceGeneratedFilesInWorkspace, language: null), true);
+
                 await TestServices.Editor.GoToDefinitionAsync(HangMitigatingCancellationToken);
                 Assert.Equal($"{HelloWorldGenerator.GeneratedEnglishClassName}.cs {ServicesVSResources.generated_suffix}", await TestServices.Shell.GetActiveWindowCaptionAsync(HangMitigatingCancellationToken));
             }
diff --git a/src/VisualStudio/IntegrationTest/New.IntegrationTests/InProcess/StateResetInProcess.cs b/src/VisualStudio/IntegrationTest/New.IntegrationTests/InProcess/StateResetInProcess.cs
index 56ddb1e2dc80d..cbd64d0769d98 100644
--- a/src/VisualStudio/IntegrationTest/New.IntegrationTests/InProcess/StateResetInProcess.cs
+++ b/src/VisualStudio/IntegrationTest/New.IntegrationTests/InProcess/StateResetInProcess.cs
@@ -16,6 +16,7 @@
 using Microsoft.VisualStudio.Extensibility.Testing;
 using Microsoft.VisualStudio.IntegrationTest.Utilities;
 using Microsoft.VisualStudio.IntegrationTest.Utilities.Input;
+using Microsoft.VisualStudio.LanguageServices;
 using Microsoft.VisualStudio.LanguageServices.Implementation;
 using Microsoft.VisualStudio.LanguageServices.Telemetry;
 using Microsoft.VisualStudio.Shell.Interop;
@@ -36,6 +37,11 @@ internal partial class StateResetInProcess
 
         public async Task ResetGlobalOptionsAsync(CancellationToken cancellationToken)
         {
+            // clear configuration options, so that the workspace configuration global option update below is effective:
+            var workspace = await TestServices.Shell.GetComponentModelServiceAsync<VisualStudioWorkspace>(cancellationToken);
+            var configurationService = (WorkspaceConfigurationService)workspace.Services.GetRequiredService<IWorkspaceConfigurationService>();
+            configurationService.Clear();
+
             var globalOptions = await GetComponentModelServiceAsync<IGlobalOptionService>(cancellationToken);
             ResetOption2(globalOptions, FeatureOnOffOptions.NavigateToDecompiledSources);
             ResetOption2(globalOptions, WorkspaceConfigurationOptionsStorage.EnableOpeningSourceGeneratedFilesInWorkspace);