ASP.Net Error: Validation of viewstate MAC failed.

gopikshnan
 
on Oct 28, 2012 11:03 PM
4488 Views

Hi,

Im getting d following error.I've read various forms and cannot understand the reason for this issue.Can you explain in a simple way what is the cause of this error and how to solve this?

Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

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Mudassar
 
on Oct 28, 2012 11:13 PM

Refer

http://adam.kahtava.com/journal/2009/11/23/how-to-fix-the-validation-of-viewstate-mac-failed-error-aspnet-mvc/