Does the XP machine need to be part of the domain? What about working around that issue?
We removed the domain completely.
So now you're what - trying to use a 2019 SMB file share or something?
What does file share have to do with AD? Completely disconnected concepts.
True - I was making my own leap -
So - where does this stand now then??
We removed AD. It turned out that it had been installed without evaluation and was serving no real purpose, but was posing a significant risk.