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:
The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:
1. Add a "Debug=true" directive at the top of the file that generated the error. Example:
<%@ Page Language="C#" Debug="true" %>
or:
2) Add the following section to the configuration file of your application:
<configuration>
<system.web>
<compilation debug="true"/>
</system.web>
</configuration>
Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.
Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.
Stack Trace:
[ViewStateException: Invalid viewstate.
Client IP: No IP For you!
Port: 55238
Referer:
Combat Arms My Avatar -- Online FPS Action
Path: /ClansRankings/PlayerProfile.aspx
User-Agent: Mozilla/5.0 (Windows NT 6.0) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.56 Safari/536.5
ViewState: /wEPDwUJLTM3NjQ1MTg1D2QWAmYPZBYCAgMPZBYEAgEPZBYCAgE PZBYCAgEPZBYIAgEPFgIeBFRleHQFcjxpbWcgc3JjPSJodHRwO i8vbnhjYWNoZS5uZXhvbi5uZXQvY29tYmF0YXJtcy9pY29uL1N UQUZGIFNFUkdFQU5UIDFzdC5naWYiIGFsdD0iU1RBRkYgU0VSR 0VBTlQgMXN0Ii8+Jm5ic3A7TmJuZXNzMmQCAw8WAh8ABQYxNiw zMzNkAgUPFgIfAAUEMC44N2QCBw8WAh8ABQoodW5yYW5rZWQpZ AIDD2QWAgICD2QWBgICDxBkZBYBZmQCAw8WAh8ABSdUb3AgMTA gV2VhcG9ucyB3aXRoIEhpZ2hlc3QgU2hvdHMgRmlyZWRkAgUPF gIeC18hSXRlbUNvdW50AgoWFAIBD2QWAmYPFQcNRzM2RSBWYWx reXJpZQ1HMzZFIFZhbGt5cmllBjM1LDYyNAU2LDk1Mgc3MTIsO Dg1AzEuMAQxNS4zZAICD2QWAmYPFQcITTQxNiBDUUIITTQxNiB DUUIFOCw2NjgFMSw5MzkHMjIxLDEwMAMwLjkEMTQuMmQCAw9kF gJmDxUHDVZpcGVyJ3MgUDkwVFINVmlwZXIncyBQOTBUUgU2LDY 3MAUxLDUxOQcxOTcsNzc5AzAuOAQxMS45ZAIED2QWAmYPFQcER zM2RQRHMzZFBTYsMzYzBTEsMT...]
[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.ThrowError(Except ion inner, String persistedState, String errorPageMessage, Boolean macValidationError) +118
System.Web.UI.ViewStateException.ThrowMacValidatio nError(Exception inner, String persistedState) +13
System.Web.UI.ObjectStateFormatter.Deserialize(Str ing inputString) +220
System.Web.UI.ObjectStateFormatter.System.Web.UI.I StateFormatter.Deserialize(String serializedState) +5
System.Web.UI.Util.DeserializeWithAssert(IStateFor matter formatter, String serializedState) +37
System.Web.UI.HiddenFieldPageStatePersister.Load() +234
System.Web.UI.Page.LoadPageStateFromPersistenceMed ium() +107
System.Web.UI.Page.LoadAllState() +43
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3911
System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +363
System.Web.UI.Page.ProcessRequest() +79
System.Web.UI.Page.ProcessRequestWithNoAssert(Http Context context) +21
System.Web.UI.Page.ProcessRequest(HttpContext context) +186
ASP.clansrankings_playerprofile_aspx.ProcessReques t(HttpContext context) +4
System.Web.CallHandlerExecutionStep.System.Web.Htt pApplication.IExecutionStep.Execute() +698
System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean& completedSynchronously) +137
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272