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View Full Version : Validation of viewstate MAC failed



vô danh
07-07-2012, 03:58 PM
FIX: Error message on an ASP.NET page after you submit a form that has the "action" attribute defined after you install the .NET Framework 2.0 SP2 or the .NET Framework 3.5 SP1: "Validation of viewstate MAC failed"

http://support.microsoft.com/default.aspx?scid=kb;en-us;970459&sd=rss&spid=8940