this is my site here when i select city ("Coimbatore")
and Searching Fo("Hotels [+]")
and click Go button i got one error how to solve that error any one help me please it very urgent.
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.