Validation of viewstate MAC failed

I have hosted my application on shared server. And its working fine. But when i leave the page idle for about 20 minutes or so and then click any button then i got this 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. "

I didnt used any viewstate in the page. And i also had only one FORM tag in the page.
I have tried to put the "EVENTVALIDATION" to FALSE but it didnt work either.
LVL 6
badalpatelAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

jinalCommented:
Hello ,

In page  directive of aspx page add EnableViewStateMac="false"

You get detail about viewstatemac at following link.

http://msdn.microsoft.com/en-us/library/system.web.ui.page.enableviewstatemac.aspx
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
badalpatelAuthor Commented:
Hi, it didnt work either..When i leave my page idle for about 20-30 mins or so then the error appear again...
0
badalpatelAuthor Commented:
Later on it did the trick
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
ASP.NET

From novice to tech pro — start learning today.