How to solve MAC Error RRS feed

  • Question

  • User2080293737 posted

    hi how to solve is error.  this error occur when i open my web page after some 20 min when i clikc any button this error occure. how to solve this problem

    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.

    even i set

    in <system.web> web.config file :
    <pages validateRequest="false" enableEventValidation="false" viewStateEncryptionMode ="Never" />

    Saturday, May 10, 2008 7:04 AM