Starting up a list workflow, was throwing following error.
Error:
RequestorId: 675358e8-c91d-0f3a-ebaa-d663a9a1202d. Details: System.ApplicationException: HTTP 401 {“error”:{“code”:”-2147024891, System.UnauthorizedAccessException”,”message”:{“lang”:”en-US”,”value”:”Access denied. You do not have permission to perform this action or access this resource.”}}} {“Transfer-Encoding”:[“chunked”],”X-SharePointHealthScore”:[“0″],”SPRequestGuid”:[“6359f5a3-808a-4144-ace2-0fdff207809f”],”request-id”:[“6359f5a3-808a-4144-ace2-0fdff207809f”],”X-FRAME-OPTIONS”:[“SAMEORIGIN”],”MicrosoftSharePointTeamServices”:[“15.0.0.4569″],”X-Content-Type-Options”:[“nosniff”],”X-MS-InvokeApp”:[“1; RequireReadOnly”],”Cache-Control”:[“max-age=0, private”],”Date”:[“Sun, 30 Nov 2014 08:08:36 GMT”],”Server”:[“Microsoft-IIS\/8.0″],”WWW-Authenticate”:[“NTLM”],”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.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor executor, BookmarkManager bookmarkManager, Location resultLocation)
Resolution 1:
PS C:\Users\exceed.epm> Get-SPTimerJob “RefreshMetadataFeed” | Start-SPTimerJob
Resolution 2 (In my case it worked):
Activate site feature “Workflows can use app permissions”
Site actions > Site Settings > Site features > Workflows can use app permission
[Updates 10-08-2016]
Resolution 3:
This time above two resolution didn’t work. Had to install CU3 of Workflow Manager and Client.