When testing a workflow that sends a email when a list item is created with my account (the farm admin).  The email is produced.

When any other user create a list item the workflow cancels itsself and shows one of the 2 errors below. The 1st one is on received when a test accoutn that I also added to farm admin group is used.  The 2nd is received by test user who has full control of the list, the task list and workflow history list (as does the test account.  Both are directly added to the group's.

Error1 RequestorId: d874ac1d-3842-96d5-1e35-c5512587596b. Details: System.ApplicationException: HTTP 404 {"error":{"code":"-1, System.ArgumentException","message":{"lang":"en-US","value":"Item does not exist. It may have been deleted by another user."}}} {"Transfer-Encoding":["chunked"],"X-SharePointHealthScore":["0"],"SPClientServiceRequestDuration":["43"],"SPRequestGuid":["36cd74ce-b17c-400c-ac56-a608a6817971"],"request-id":["36cd74ce-b17c-400c-ac56-a608a6817971"],"X-FRAME-OPTIONS":["SAMEORIGIN"],"MicrosoftSharePointTeamServices":["15.0.0.4551"],"X-Content-Type-Options":["nosniff"],"X-MS-InvokeApp":["1; RequireReadOnly"],"Cache-Control":["max-age=0, private"],"Date":["Fri, 24 Jan 2014 21:37:24 GMT"],"Server":["Microsoft-IIS/7.5"],"X-AspNet-Version":["4.0.30319"],"X-Powered-By":["ASP.NET"]} at Microsoft.Activities.Hosting.Runtime.Subroutine`1.SubroutineChild.Execute(CodeActivityContext context) at System.Activities.CodeActivity.InternalExecute

Or this error  Error 2 RequestorId: d874ac1d-3842-96d5-1e35-c5512587596b. 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":["4e35d9c0-d065-45d2-addf-b9fcec0ad591"],"request-id":["4e35d9c0-d065-45d2-addf-b9fcec0ad591"],"X-FRAME-OPTIONS":["SAMEORIGIN"],"MicrosoftSharePointTeamServices":["15.0.0.4551"],"X-Content-Type-Options":["nosniff"],"X-MS-InvokeApp":["1; RequireReadOnly"],"Cache-Control":["max-age=0, private"],"Date":["Fri, 24 Jan 2014 21:24:24 GMT"],"Server":["Microsoft-IIS/7.5"],"WWW-Authenticate":["NTLM"],"X-AspNet-Version":["4.0.30319"],"X-Powered-By":["ASP.NET"]} at Microsoft.Activities.Hosting.Runtime.Subroutine`1.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)

Background -SP2013 Farm -WFE, 2 APP Servers, and DB server -Farm only up since 1/11/2014 -Workflow was originally created in SPD 2010.  -When the problem originally occured I recreated using SPD 2013 with the same results. -This was working until last thursday 1/16/2014 (not sure if related) but Windows updates were applied that night.

Hi,

I see two errors,

1. Item does not exist. It may have been deleted by another user
2. Access denied. You do not have permission to perform this action or access this resource.

You can try to give enough permission to the users by adding them to the proper group.

Hope this