troubleshooting Question

Validation of viewstate MAC failed

Avatar of ameriaadmin
ameriaadminFlag for Armenia asked on
Microsoft SQL ServerMicrosoft IIS Web Server.NET App Servers
8 Comments1 Solution710 ViewsLast Modified:
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.   at System.Web.UI.ViewStateException.ThrowMacValidationError(Except

hello everyone

i have seen some error in my sql server logs. hear is

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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.   at System.Web.UI.ViewStateException.ThrowMacValidationError(Except

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i have two web servers and one sql server. for load balancing i have used dns round-robin.

in iis server i have manually created machinKey and submit sam in two servers but the log still exist

please suggest what to do.
ASKER CERTIFIED SOLUTION
Dan McFadden
Technical Lead - Active Directory

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