Validation of viewstate MAC failed. Error for Asp.net Application on VS 2010

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I have windows server where my many application are hosted. but my one application is giving below when big data (200-400 rows) is coming in crystal report. but it is working fine for limited record like 10 to 50 rows..plz help me out..

XML

Server Error in '/' Application.
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.

See http://go.microsoft.com/fwlink/?LinkID=314055 for more information.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: 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.

See http://go.microsoft.com/fwlink/?LinkID=314055 for more information.

Posted 16-Oct-14 21:13pm

Gaurav Gupta A Tech Guy

Updated 19-Oct-22 18:11pm

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Member 15803665 · Answer 1 · 2022-10-19T18:11:00

Solution 2

My dissertation mark not mentioned in my grad card so plz tell me because of very long time I am waiting so please update my grad card and gave me my markseet

Posted 19-Oct-22 18:11pm

Member 15803665

Comments

Richard Deeming 20-Oct-22 4:39am

1) This is not your college / university. We have no access to your dissertation, your marks, or any information about you.

2) Your complaint about your marks is not a solution to someone else's question from eight years ago.

3) Based on your inability to understand points 1 and 2 above, I suspect your poor grade was well deserved.