Error on Sign Out


When a user signs out then they get the following:

Server Error in '/' Application.

Exception of type 'System.ArgumentException' was thrown.
Parameter name: encodedValue
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.ArgumentException: Exception of type 'System.ArgumentException' was thrown.
Parameter name: encodedValue

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:

[ArgumentException: Exception of type 'System.ArgumentException' was thrown.
Parameter name: encodedValue]
Microsoft.SharePoint.Administration.Claims.SPClaimEncodingManager.DecodeClaimFromFormsSuffix(String encodedValue) +38395054
Microsoft.SharePoint.Administration.Claims.SPClaimProviderManager.GetProviderUserKey(String encodedIdentityClaimSuffix) +368
Microsoft.SharePoint.ApplicationRuntime.SPHeaderManager.AddIsapiHeaders(HttpContext context, String encodedUrl, NameValueCollection headers) +919
Microsoft.SharePoint.ApplicationRuntime.SPRequestModule.PreRequestExecuteAppHandler(Object oSender, EventArgs ea) +463
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +80
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +165


ccoulson wrote Oct 9, 2013 at 1:18 PM

I've gotten that before too - it seems to be random - sometimes the logout works, sometimes it doesn't. I think it has to do with logging in/out with both windows authentication and FBA on the same machine. It does seem to be a SharePoint bug though, not the the FBA Pack, so hopefully it will be corrected in a future SharePoint service pack.

thaxy wrote May 2, 2014 at 10:07 AM

I can confirm that this is a SharePoint-Bug only. It appears without FBA Pack installed in Mixed mode usually at the 2nd sign out action.