Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.
how we can remove it. when we are login in my software and after 2-4 minutes if we are clicking in any button of my page this occur this type of error
Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.
Steven ReidPosted Jan 13, 2015, 2:36 AM
You may refer to this post at http://dotnet4hosting.asphostportal.com/post/ASPNET-Hosting-Resolve-Errror-Validation-of-viewstate-MAC-failed.aspx.
Hope this help
Manish Kumar ChoudharyPosted Dec 26, 2014, 3:32 AM
add this in web.config file
Khargesh RajputPosted Dec 26, 2014, 3:18 AM