I have two user profiles with similar names, one was created when I upgraded from win 7 to Win 10.
The two user names are MAGS and MAGS.000. If I look at the registry, they have identical SID's, except for the rightmost (last) number - MAGS has -500, MAGS.000 has -1000.
If I use Netplwiz it shows that I am logged on as MAGS, but if I run a CMD prompt it always opens in the C:\user\MAGS.000\ directory.
Its not a big issue - everything works fine, but I'd like to understand how this all works and whether I should/could take any action to merge the accounts or remove one.