I dont kow if anyone has done this before, but I have just replaced my wife’s laptop and did a clean install on her old one. When I went through the process of installing windows, it would not let me have a local account despite using ‘nothanks@thanks.com etc.
So I created a user account and made it admin. I opened it and deleted the MS account which left me with my user account as admin. The original MS truncated account remained in users and would not allow deletion, so I did msconfig and safe boot and deleted it from there. On checking the profile just the correct one shows. I then finished installing apps etc then Shutup10 and ultimate windows tweaker 5 and all seems OK.
Hope this is of use to someone