AUSST Returned with code: 3

Whenever we try to do a fresh or incremental update, we end up with this error Code 3.

AUSST always fails downloading the files: "Could not access the specified path.".

I checked the permissions of the --root folder: EVERYONE has full permissions in Windows. (Windows 7 Enterprise)

About 2 months ago, everything went fine when downloading the updates.

Within these 2 months nothing changed on this Windows 7 workstation (also Windows Updates haven't been installed since the last succesful update).

I tried reinstalling creative cloud packager and do a fresh sync, which also didn't work anymore.

Maybe someone has a solution for this problem or maybe a hint how to solve this issue.