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.

See http://go.microsoft.com/fwlink/?LinkID=314055 for more information.

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.

See http://go.microsoft.com/fwlink/?LinkID=314055 for more information.

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: 23.20.220.59
	Port: 49394
	Referer: 
	Path: /CuteSoft_Client/CuteEditor/Dialogs/Load.ashx
	User-Agent: claudebot
	ViewState: /wEWBAUFZGEtZGsFAyRhMRUHGXNlY3VyaXR5OkZpbGVzR2FsbGVyeVBhdGgZc2VjdXJpdHk6SW1hZ2VHYWxsZXJ5UGF0aBlzZWN1cml0eTpJbWFnZUJyb3dzZXJQYXRoHHNlY3VyaXR5OlRlbXBsYXRlR2FsbGVyeVBhdGgVc2VjdXJpdHk6TWF4SW1hZ2VTaXplFnNlY3VyaXR5Ok1heEltYWdlV2lkdGgXc2VjdXJpdHk6TWF4SW1hZ2VIZWlnaHQVBxovY21zL2NsdWJ2aWJ5aWYvQ2x1YkltYWdlcxovY21zL2NsdWJ2aWJ5aWYvQ2x1YkltYWdlcxovY21zL2NsdWJ2aWJ5aWYvQ2x1YkltYWdlcx0vY21zL2NsdWJ2aWJ5aWYvQ2x1YlRlbXBsYXRlcwQzMDAwBDM4NDAEMjE2MHyBO/gDdmJ52pIoAdAJzqF9u95Drj7xCxNgsRep6LXN]

[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.

See http://go.microsoft.com/fwlink/?LinkID=314055 for more information.]
   System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) +161
   System.Web.UI.ObjectStateFormatter.Deserialize(String inputString, Purpose purpose) +731
   CuteEditor.CEU.SplitEditorSetting(String setting, String& culture, String& securityPolicyFile, NameValueCollection& dict) +171
   CuteEditor.CEU.SplitEditorSetting(HttpContext context, String& culture, String& securityPolicyFile, NameValueCollection& dict) +178
   CuteEditor.LoadHandler.a() +91
   CuteEditor.LoadHandler.a(Match A_0) +32
   System.Text.RegularExpressions.RegexReplacement.Replace(MatchEvaluator evaluator, Regex regex, String input, Int32 count, Int32 startat) +235
   System.Text.RegularExpressions.Regex.Replace(String input, MatchEvaluator evaluator) +72
   CuteEditor.LoadHandler.c(String A_0) +145
   CuteEditor.LoadHandler.a(String A_0, String A_1, String A_2) +193
   CuteEditor.LoadHandler.ProcessRequest(HttpContext aspnetcontext) +1658
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +542
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +75
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +93


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0