Can't delete folder as admin, asks for Admin User that doesn't exist - "You'll need to provide administrator permission to delete this folder"
What you should be able to do, if you are admin to the machine:
- Right click the folder and choose properties.
- Go to the security tab
- Click 'Advanced'
- Go to the Owner tab
- Choose edit
- Select your correct user/ username and then check the box for "Replace own on subcontainers and objects"
- Click OK
This should now allow you to delete the folder.