Today when I tried to access CRM in my VPC, I got MS CRM generic error, then I used CrmDiagTool4 tool to enable trace and used Crm Trace Log Viewer to check trace files and found below error.

at EventHandler.Invoke(Object sender, EventArgs e)

at HttpApplication.RaiseOnError()

at ApplicationStepManager.ResumeSteps(Exception error)

at HttpApplication.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData)

at HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)

at ISAPIRuntime.ProcessRequest(IntPtr ecb, Int32 iWRType)

>MSCRM Error Report:

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Error: The key specified to compute a hash value is expired, only active keys are valid.  Expired Key : CrmKey(Id:9a0cded3-e64a-e011-a4c7-000c29e86f10, ScaleGroupId:00000000-0000-0000-0000-000000000000, KeyType:CrmStaticVersionScaleGroupKey, Expired:True, ValidOn:03/10/2011 07:20:13, ExpiresOn:05/09/2011 07:20:13, CreatedOn:03/10/2011 07:20:13, CreatedBy:NT AUTHORITYNETWORK SERVICE.

Error Number: 0x8004A106

Error Message: The key specified to compute a hash value is expired, only active keys are valid.  Expired Key : CrmKey(Id:9a0cded3-e64a-e011-a4c7-000c29e86f10, ScaleGroupId:00000000-0000-0000-0000-000000000000, KeyType:CrmStaticVersionScaleGroupKey, Expired:True, ValidOn:03/10/2011 07:20:13, ExpiresOn:05/09/2011 07:20:13, CreatedOn:03/10/2011 07:20:13, CreatedBy:NT AUTHORITYNETWORK SERVICE.

Error Details: The key specified to compute a hash value is expired, only active keys are valid.  Expired Key : CrmKey(Id:9a0cded3-e64a-e011-a4c7-000c29e86f10, ScaleGroupId:00000000-0000-0000-0000-000000000000, KeyType:CrmStaticVersionScaleGroupKey, Expired:True, ValidOn:03/10/2011 07:20:13, ExpiresOn:05/09/2011 07:20:13, CreatedOn:03/10/2011 07:20:13, CreatedBy:NT AUTHORITYNETWORK SERVICE.

I found “Microsoft Dynamics CRM Asynchronous Processing Service” was not running. I just started it and tried to access CRM, it worked!!!

Enjoy !!!