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HttpException : Unable to validate data.

Hi everyone,

My site is randomly firing off a "ExceptionHttpE xception : Unable to
validate data. " error on some of its forms at the moment:
-------
HttpException : Unable to validate data.
http://www.developerfusion.co.uk/Mem...itProfile.aspx (Referred
by http://www.developerfusion.co.uk/Mem...itProfile.aspx)
at System.Web.Conf iguration.Machi neKeySection.Ge tDecodedData(By te[] buf,
Byte[] modifier, Int32 start, Int32 length, Int32& dataLength)
at System.Web.UI.O bjectStateForma tter.Deserializ e(String inputString)
-----------
I can't reproduce it myself, but several users and the automatic error
reports that have been generated indicate this. The site isn't running on a
web farm or anything, the application pool isn't being recycled, and I've
tried the standard solutions of specifying a fixed machine
validation/encryption key, and I've also tried disabling the view state mac
entirely, but the problem persists. Does anyone have any ideas what might be
triggering this?

Thanks,

- James
www.developerfusion.co.uk
Feb 15 '06 #1
0 1132

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