How to Resolve HTTP 500 error in sharepoint 2013 workflow

Question

Hi guys,
             I am new to Sharepoint. I have created a workflow for sending if a document added or edited in a document library. When i added a document i
workflow status shows workflow started. But when checked in the internal status of the workflow it shows as cancelled.
RequestorId: 2bfd5ec9-1fd1-de92-ccc2-1f2a912c49ce. Details: System.ApplicationException: HTTP 500 {"Transfer-Encoding":["chunked"],"X-SharePointHealthScore":["0"],"SPClientServiceRequestDuration":["132"],"SPRequestGuid":["2bfd5ec9-1fd1-de92-ccc2-1f2a912c49ce"],"request-id":["2bfd5ec9-1fd1-de92-ccc2-1f2a912c49ce"],"X-FRAME-OPTIONS":["SAMEORIGIN"],"MicrosoftSharePointTeamServices":["15.0.0.4420"],"X-Content-Type-Options":["nosniff"],"X-MS-InvokeApp":["1;
RequireReadOnly"],"Cache-Control":["max-age=0, private"],"Date":["Wed, 05 Feb 2014 09:18:43 GMT"],"Server":["Microsoft-IIS\/8.0"],"X-AspNet-Version":["4.0.30319"],"X-Powered-By":["ASP.NET"]}
at Microsoft.Activities.Hosting.Runtime.Subroutine.SubroutineChild.Execute(CodeActivityContext context) at System.Activities.CodeActivity.InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) at System.Activities.Runtime.Activit
How to resolve this error. It shows http 500 error.

Answer 1

Go to one of your SharePoint boxes, open op powershell and get teh logs around the "SPRequestGUid" you see in your message...  Do something like this:
Merge-SPLogFile -path "Desktop\wferror.log" -correlation 2bfd5ec9-1fd1-de92-ccc2-1f2a912c49ce
This will basically grab log files from all boxes ULS logs that have to do with that transaction.
*** not sure how far back it will look depending on your log size, but sometimes I've had to reproduce another error (with a new SPGuid) and then Merge logs with that Correlation...
Once you get this file, you can open it with ULSViewer and then you can filter/sort by Product/Category/ErrorLevel/etc...  this will definitely help you determine what the issue is.  The key is that SPRequestGuid (which is the "Correlation ID"
that you see when you get SharePoint Unexpected errors to reference the log files...