KB935434 - Error message in FIPS-compliant systems when you use WCF

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Description
A Hotfix is a product update package with one or more updated product files that fix a specific product problem.

IMPORTANT NOTE

Please be aware this Hotfix has not gone through full Microsoft product regression testing nor has it been tested in combination with other Hotfixes.

Please carefully review the associated Hotfix KB article to verify the fix is the one needed and there are no known compatibility or installation issues. You may also want to contact a Microsoft Support Professional at http://support.microsoft.com

Issue Description

FIX: Error message in FIPS-compliant systems when you use Windows Communication Foundation to serialize generic types: "This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms"


SYMPTOMS
In Federal Information Processing Standard (FIPS)-compliant systems, you receive the following error message when you use Microsoft Windows Communication Foundation (WCF) to serialize generic types:
System.InvalidOperationException: This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms.

CAUSE
This problem occurs because the MD5 algorithm is not FIPS compliant. The MD5 algorithm uses Windows Communication Foundation to obtain a hash value. The hash value generates a unique name for a data contract.



Additional Information about the issue resolved by this Hotfix can be found in its Knowledge Base article at http://support.microsoft.com/kb/935434

Additional Hotfixes
Search the list of all other publicly available Visual Studio and .NET Framework Hotfixes at http://code.msdn.microsoft.com/Project/ProjectDirectory.aspx?TagName=Hotfix&ProjectSearchText=Hotfix*