Yesterday, I was performing a database attach and upgrade from 2010 to 2013 SharePoint instances. I have done it previously without an issue but this time, I had to delete the prior application and recreate it (as a classic authentication application) before attaching and upgrading the database. The reason for that was being the current application was already converted to claims based authentication and when I first tried to attach the database from the 2010 “classic authentication” app, it was giving me an error. The classic authentication SharePoint site is currently a production site and we did not want to convert to claims BEFORE migration so I needed to create a classic authenticated app in SharePoint 2013.
After attempting to create the classic authentication application in SharePoint 2013, I received an error (this error will be discussing in another blog post). I tried deleting the web application and receive an error. It stated:
Sorry, something went wrong
An object of the type Microsoft.SharePoint.Administration.SPIisWebsiteUnprovisioningJobDefinition named “Unprovisioning (AppName)” already exists under the parent Microsoft.SharePoint.Administration.SPWebService named “”. Rename your object or delete the existing object.