diff --git a/test/IISIntegration.IISServerFunctionalTests/SynchronousReadAndWriteTests.cs b/test/IISIntegration.IISServerFunctionalTests/SynchronousReadAndWriteTests.cs
index 587df49b2c..4e218d7392 100644
--- a/test/IISIntegration.IISServerFunctionalTests/SynchronousReadAndWriteTests.cs
+++ b/test/IISIntegration.IISServerFunctionalTests/SynchronousReadAndWriteTests.cs
@@ -23,7 +23,7 @@ namespace Microsoft.AspNetCore.Server.IIS.FunctionalTests
             _fixture = fixture;
         }
 
-        [ConditionalFact]
+        [ConditionalFact (Skip = "See https://github.com/aspnet/IISIntegration/issues/629")]
         public async Task ReadAndWriteSynchronously()
         {
             for (int i = 0; i < 100; i++)