Restore Fail Help

MourningStar said:

ok - thank you Ghot!

Once you become used to using backup software, your Windows world will get a lot easier.
With a fresh backup and the bootable backup software media, you're pretty safe.

Heck, with the bootable backup software media, you can access your backups, even when Windows won't boot.

Restoring from a backup completely overwrites Windows. So it pretty much erases any bad stuff that might have happened, since your last backup.

Researching the error number, and noting the path relates to icloud - some sort of cloud synching backup? - it is interesting to find this as the first hit, relating in this case to OneDrive:

https://answers.microsoft.com/en-us/...8-ec534e3a6de4 with an identically formatted error.

It does seem surprising this relates to a folder path apparently related to data.

What you might try is running System Restore either in Safe Mode or from Advanced Startup options, but I wouldn't be too hopeful.

Exact same thing here:
How to handle error message (0x80071ac5) when System Restore fails in Windows 10? | SolveForum

- tends to suggest some flaw related to cloud backup...

My experience - when SR fails there's little hope of getting it working again. When it happened to me- a few months later all was fine again.. maybe after an upgrade (hence try an in-place upgrade repair install as Ghot has advised).