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Problem with ASP.net Web Application for Visual Studio 2012

Posted on 2013-01-06
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Last Modified: 2013-01-18
I am having a problem with the ASP.net Web Application for Visual Studio 2012 .Net 4.5 Web Application template.  When I try to run a session and login, I have a problem that displays the following error:  

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.
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Question by:VBBRett
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Pratima Pharande earned 1500 total points
ID: 38749930
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Author Closing Comment

by:VBBRett
ID: 38794547
This helped but it was also a browser specific problem.  It appears that IE9 has to sense a new page sometimes or all the time otherwise it will not work.
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