Resolving 'Windows cannot find the local profile and is logging you on with a temporary profile' in Windows 2008 R2

So you noticed an error in your Event Log stating 'Windows cannot find the local profile and is logging you on with a temporary profile. Changes you make to this profile will be lost when you log off.'


Details
Event ID: 1511
Source: User Profile
Message: Windows cannot find the local profile and is logging you on with a temporary profile. Changes you make to this profile will be lost when you log off.


Explanation
Windows could not log you on with your local profile and has issued you a temporary profile.


Possible reasons include:
Your local profile is corrupt.
You no longer have adequate privileges to the profile folders.
All changes made to the temporary profile will be lost when you log off.


Resolution


1. Add the 'DOMAIN\app_pool_account' account to the “Domain Admins” groups.
2. Reboot the server into safe mode.
3. Log in as a Domain Administrator.
4. Deleted the temporary profile of the service account using User Profiles. Right Click 'My Computer' then click 'Properties' and go to 'Advanced System Settings' and on the 'Advanced' tab, click 'Settings' in the 'User Profiles' section:

5. Log-off Domain Administrator.
6. Logon as the problematic service account.
7. Reboot normally.
8. Removed service account from “Domain Admins” group.