Username appears top be a subset of original username

macnab said:

Which means it probably happened with a Repair Install.

Some form of repair, possibly you did a Reset?. However it happened, you ended up in the situation where the Nigel account did not exist yet or hadn't signed in for the first time, but the folder C:\Users\Nigel already existed.

1) Nigel already existed, so it appended the computer name? Have I got that right

Yes...

2) Which means either I made a bad choice, or Microsoft haven't got it 100% correct yet...

Windows made the best of the situation it found itself in. It needed to create a new clean folder for the Nigel account when it first signed in so that it could create a fresh new user profile there, but couldn't use the name Nigel for that folder as a folder of that name already existed.

It shouldn't matter that your user folder is now named username.computername, everything should work normally from now on. I'd leave it that way and put up with it.

Thanks everyone.

Learned a few things about username and computer name

Not all the software developers are aware of it using the correct terminology.

I think I will leave things as they are, and just be aware of the need to sometimes copy/move entries between AppData entries.

Bree That is what happened. Needed a repair install. Windows did its best. Created complications for me And some software developers.

macnab said:

I think I will leave things as they are, and just be aware of the need to sometimes copy/move entries between AppData entries.

You could rename the user folder with the tutorial mentioned earlier, but it is risky as noted in the tutorial: "...renaming a user profile folder name may have unknown side effects. For example, some programs not referencing the new profile folder name.". Safest to leave things as they are now.

That is what happened. Needed a repair install. Windows did its best. Created complications for me And some software developers.

You seem to have ended up with some software that was installed before the repairs still having the old account's appdata folder in its registry entry. You could try reinstalling any software that uses the old folder and see if it picks up on the new name.