I get this error when pushing our website to our clients production server however the page works absolutely fine on their dev / test servers. What causes this error (consideri
If indeed you are using multiple servers try the following: Add to your web.config:
But generate the validationKey and decryptionKey yourself using the code examples found here: http://msdn.microsoft.com/en-us/library/ms998288.aspx The above link also explains more about this solution so check it out, look for Web Farm Deployment Considerations on that page