Can you look at About → Show log → Live → Warning during a run to see the reason for failure? We’re guessing permissions is the cause, and it would be best to not guess – especially if fixing permissions.
I think that’s because Windows likes to set ACLs so that it gets Full Control, otherwise it can be blocked:
C:\backup source\restricted file here>whoami
C:\backup source\restricted file here>type restricted.txt
Access is denied.
C:\backup source\restricted file here>
The above file gives access only to me, the ordinary user who set its security, and I removed SYSTEM.
I’m sort of curious why SYSTEM access went missing on the server 2019 system. On my Windows 10 desktop, C:\Users sets a new set of permissions (as opposed to inheriting from C:), and has SYSTEM. Specific users folders also have it (and also don’t inherit). Typically, inheritance is used heavily after the general security setup is set. I think this also makes it very easy to push permissions to folder contents, because there’s nothing to change for the contained files and folders. They just inherit top-level security, however there’s no telling what a user might do in their profile, so there’s still a potential for non-access.
Explorer right-click Properties → Security → Advanced shows what was inherited from, and what there inherits downward. For a test, I avoided Advanced screen and just added a permission. It inherits down.
Windows: Add system access to folder if needed are the CrashPlan 6 directions, and I remember doing this on CrashPlan Home when it still existed. Just add SYSTEM permission. Don’t remove anything else.
I suspect they’re the same, based on this saying
S-1-5-18 System (or LocalSystem), Also see this.
Another place to see this is on the About → System info screen in the GUI. Look for the
- Check your live log Warning details (click on lines if necessary) to see what actual problem was.
- Check your folder Security → Advanced permissions at least at C:\Users and C:\Users\<user>.
- If adding SYSTEM is acceptable, do so and make sure via
Advanced security GUI that it inherits.