MSDN Archive Home
Help and FAQs
KB935434 - Error message in FIPS-compliant systems when you use WCF
All Resource Updates
Change History (all pages)
A Hotfix is a product update package with one or more updated product files that fix a specific product problem.
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
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"
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.
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
Search the list of all other publicly available Visual Studio and .NET Framework Hotfixes at
Apr 15 2008 at 2:38 AM
, version 3
Sign in to add a comment
Wed Jun 20 2007 at 7:00 AM
More Tags ...
Visual Studio 2005
Visual Studio 2008
Visual Studio 2010
Manage Your Profile
MSDN Flash Newsletter
© 2008 Microsoft Corporation. All rights reserved.