I keep getting this error:
The permissions on directory E:\WSUS\WsusContent are incorrect.
and another event:
The WSUS content directory is not accessible.
System.UnauthorizedAccessException: Access to the path
'E:\WSUS\WsusContent\anonymousCheckFile.txt' is denied.
I followed the instructions from all of the sites in relation to providing the Network Service account Full access to the E:\WSUS\WsusContent folder and Read permissions (even full) to the root of the drive and E:\WSUS. However, I still get the error.
Best Answer
Check to see if the NT AUTHORITY\Network Service account has READ rights on the root of drive E:
There are a few other things to try in this TechNet Forum post:
http://social.technet.microsoft.com/Forums/windowsserver/en-US/9989aaed-fc80-4f63-8dcf-b96de20f8c9d/wsus-windows-2012failed-to-down-load-update
Edit
Sorry didn't see that you tried the NT AUTHORITY\Network Service account permissions solution. There are still a few other things to try in that TechNet article.