Hi to all, i developed a web application, i used ajax in it.
it's working fine, but some time suddenly it shows me an error -
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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.
after some time this error gone automatically.
Can anyone help me about this error msg ?
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