For some reason, one of my three Win10 pcs (all on the same network) has decided that it's on a public rather than private network.

Tried things like tweaking the registry, making it discoverable, deleting and readding the network adapter and numerous other faffings but the damn thing keeps reverting to public after an hour or so or on restart.

It's wired at present but I had the same issue when it was wireless too.

It's really annoying even though it's not actually preventing me doing anything.

Any pointers on how to fix?

Ta muchly