Hi,
I have a website(connect to active directory and pull the required details) deployed on the production web server and it is working fine from last one year.
But from last two days users are getting the following error frequently and please find the error details below:-
I would be greteful if you could please suggest how i can proceed on this error so that i will apply the fix in the webserver.
Error Details:
Server Error in '/' Application.
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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 stac ...
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