There seems to be some problems with my user and system accounts and rights in WIn10, which seem to affect various operations.
I found this article that recommends to use SYSPrep to repair:
But I read elsewhere that SYSPrep should not be used to make changes to an existing installation, only to create new ones.
Which is correct -- is the repair procedure correct/safe?
Here's the details -- let me know if you need more:
The laptop had been upgraded in place from win7/8 to win10 by a prev owner. There are documented issues with such upgrades, one being messing up the user acct/authority management system: I can create new users but they have no profiles and I cannot login using them. This appears to produce quirks in other functions.
I don't want to apply Windows repair, or resets or anything that will either kill my customization and elimination of bloat that I did. I am running an earlier version of Win10Pro which I cleaned of Cortana and Edge and other apps and if I run SCANNOW for example, they will be returned.
So the question is can I fix this without reinstalling Windows?