Hello,
From the past few days, I am receiving the following error. After running my Asp.net 3.5 web pages, when I clicked on any linkbutton, I am receiving this error.
Please help me to solve this problem.
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Server Error in '/travel_agency' Application.
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. Description:
An unhandled exception occurred during the execution of the current web
request. Please review the stack trace for more information about the error and
where it originated in the code. < ...
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