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A COM interop call may return an incorrect HRESULT. This problem may occur if the calling sequence where the call to the COM server is made goes from unmanaged code to managed code, and then goes back to unmanaged code.
This bug was corrected in .NET Framework 1.1 Service Pack 1. For more information about how to obtain the .NET Framework Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:
885055 How to obtain Microsoft .NET Framework 1.1 Service Pack 1
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.