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Our ASP.NET (VB) is generating sporadic "Unable to validate data" and
"Invalid length for a Base-64 char array" errors.

The production environment is two Windows 2000 Advanced Servers in a web
farm. The <machinekey> web.config element has its validationKey (128 char
hex) and decryptionKey attributes set. They are identical on both web
servers.

I believe the error is related to the viewstate due to similar postings on
the Net. However, none have offered concrete solutions.

Anyone have any ideas?

Thanks in advance,
Victor Alcazar
Pillsbury Winthrop