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. ---> System.Web.UI.ViewStateException: Invalid viewstate.
There was a thread on this back in 2008, but I did not see a resolution at that time.
I am running a single user for a single profile. The profile loops for 5 minutes and lands on 4 different pages. I have attached the Scenario and the profile in question. I have tried entering enableViewStateValidation = "false" into the web.config files as recommended in some other threads, but this does not help.
We are not running a Web Farm. I do not receive these errors when I run the application manually. I am using the think times generated individually for each request via the record process.
I am using WAPT 6.0 Built on Sep 9, 2009.
Thanks for your help.
Sean M. Severson