From Nalpeiron documentation
A -3016 error is caused by a system directory on the machine being mis-set, pointing to a non-existent directory, having permissions problems, or something similar.
There is more than the line I quoted, but I don't think it actually helps!.
One thing we do see from time to time - Windows silent updates, and also virus scans, can limit access if running in the background. It can be worth looking at Task Manager to see if activity is unexpectedly high.
If this happens to a particular machine, a re-install might be worth trying (when you are not under time pressure).
Many licensing problems can be fixed by deleting the local licence files and then re-activating.
Support can provide further assistance if needed.