diff --git a/src/Razor/Microsoft.NET.Sdk.Razor/integrationtests/MvcBuildIntegrationTestLegacy.cs b/src/Razor/Microsoft.NET.Sdk.Razor/integrationtests/MvcBuildIntegrationTestLegacy.cs
index f73bdeb2d6..b5eba2a9f3 100644
--- a/src/Razor/Microsoft.NET.Sdk.Razor/integrationtests/MvcBuildIntegrationTestLegacy.cs
+++ b/src/Razor/Microsoft.NET.Sdk.Razor/integrationtests/MvcBuildIntegrationTestLegacy.cs
@@ -56,6 +56,7 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
         }
 
         [Fact]
+        [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/23635")]
         public virtual async Task BuildingProject_CopyToOutputDirectoryFiles()
         {
             using (CreateTestProject())