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Validation of viewstate MAC failed RRS feed

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    User-1783672108 posted

    Hello!

    I am running into a issue after adding 51Degrees Mobile Detection into my ASP.net Web Application. The error is as follows...

    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.

http://go.microsoft.com/fwlink/?LinkID=314055

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.

http://go.microsoft.com/fwlink/?LinkID=314055

Source Error: 


[No relevant source lines]

Source File: d:\Users\Apezdr\AppData\Local\Temp\Temporary ASP.NET Files\root\d1ff4ebc\111df1fe\App_Web_rpepi0oo.4.cs    Line: 0 

Stack Trace: 
    [ViewStateException: Invalid viewstate. 
	Client IP: ::1
	Port: 64094
	Referer: http://localhost:53012/
	Path: /Default.aspx
	User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X; en-us) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53
	ViewState: w6nNbZ0ZqEYDmMzVeBPyx00PvKh0i8xJLWx+CzVdU45S2T+vQV6wt2ejiVAEd+ru+TSgDYwTVKVV881z+0ugO2efJaybAc16sE3B14XoVm+cxrdHHt1sqAYFK8TLTw2uehGFvP9soOpzv5CkC3/8GcCIGy+J+o+c1D4n8TMy6S19TuQS0onu6hZYANwYBHr282xBihfAkHxr1+3kQ4WvbIwp3sRcsXZQISg8lHH9uag=]

[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.

http://go.microsoft.com/fwlink/?LinkID=314055]
   System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) +156
   System.Web.UI.ObjectStateFormatter.Deserialize(String inputString, Purpose purpose) +432
   System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter2.Deserialize(String serializedState, Purpose purpose) +8
   System.Web.UI.Util.DeserializeWithAssert(IStateFormatter2 formatter, String serializedState, Purpose purpose) +40
   System.Web.UI.HiddenFieldPageStatePersister.Load() +248
   System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +238
   System.Web.UI.Page.LoadAllState() +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6704
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +245
   System.Web.UI.Page.ProcessRequest() +72
   System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
   System.Web.UI.Page.ProcessRequest(HttpContext context) +58
   ASP.default_aspx.ProcessRequest(HttpContext context) in d:\Users\Adam\AppData\Local\Temp\Temporary ASP.NET Files\root\d1ff4ebc\111df1fe\App_Web_rpepi0oo.4.cs:0
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +341
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69

    I honestly dont know where to begin with what its saying, any advice from you guys??

    Tuesday, June 17, 2014 8:07 PM