I am getting few errors in production environment. One of the error that I am seeing in log is
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.
Could anyone please chime-in and help me with this. I am not sure what this means, and if this is an application error or web-hosting error.
