cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
New

Validation of viewstate MAC failed

Hi ,

we hosted an asp.net web application and getting an error if we put for idle some time.

Please assist. Error is as follows

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.

2 REPLIES 2
New

Re: Validation of viewstate MAC failed

Did you ever get a resolution to this?  Having the same issue.


@CASsys wrote:

Hi ,

we hosted an asp.net web application and getting an error if we put for idle some time.

Please assist. Error is as follows

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.


 

Re: Validation of viewstate MAC failed

Hi,

 

Have you managed to fix it and if yes, can you share your resolution please?

 

Thanks a lot!