System.Web.UI.ViewStateException: Invalid viewstate

Have web page - working fine in dev and visual studio
But on the production server I'm constantly getting the following.
Any ideas...  I seen some articles about the Application pool and recycling ???

System.Web.UI.ViewStateException: Invalid viewstate. Client IP: 96.939.199.20 Port: 1930 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.62 Safari/537.36 ViewState: 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Sanjay SantokiCommented:

If you are using ASP.Net states component; make sure ASP.Net State service is running on the production server.

Sanjay Santoki

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