Unauthorized errors

Oct 14, 2016 at 4:08 PM

I am working on SP2010 to 2013 migration. I have installed spdactivity wsp on our 2013 servers. We are using 2 web fronts, 2 App servers and 1 DB servers. I have added "safecontrol" and "Authorizedtypes" lines in web.config files of my 2 web fronts and 1 app server for that particular web app on which this wsp is deployed. But I am getting this error when I run a workflow with custom actions
"System.UnauthorizedAccessException: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) at Microsoft.SharePoint.SPGlobal.HandleUnauthorizedAccessException(UnauthorizedAccessException ex)
at Microsoft.SharePoint.Library.SPRequest"

Please help me solve this.