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Please give me help regarding the random error comes within my web application using c# asp.net. The error is as follows:
"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."
Add enableEventValidation=”false” property to page.
Refer link: http://weblogs.asp.net/albertpascual/archive/2008/08/11/fixing-the-validation-of-viewstate-mac-failed-error-issue.aspx