Server Error in '/' Application.
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.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: 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.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[ViewStateException: Invalid viewstate.
Client IP: 72.137.13.246
Port: 52807
Referer: http://www.profania.com/insc.aspx
Path: /insc.aspx
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36
ViewState: 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...]
[HttpException (0x80004005): 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.]
System.Web.UI.ViewStateException.ThrowMacValidationError(Exception inner, String persistedState) +12518252
System.Web.UI.ObjectStateFormatter.Deserialize(String inputString, Purpose purpose) +12409755
System.Web.UI.Util.DeserializeWithAssert(IStateFormatter2 formatter, String serializedState, Purpose purpose) +67
System.Web.UI.HiddenFieldPageStatePersister.Load() +12409967
System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +12665203
System.Web.UI.Page.LoadAllState() +51
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +12658151
System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +12657661
System.Web.UI.Page.ProcessRequest() +119
System.Web.UI.Page.ProcessRequest(HttpContext context) +99
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +913
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +165
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18408
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