HomeGroup Duplicate account

Hi, i upgrade my copy of windows 7 home basic to windows 10 home. In old windows 7 i have only one account named xxx. After upgrade to windows 10, i found my old account xxx, then i sign in with my microsoft account. I connect to my home Group, then now i found in home group 2 user, my old xxx and my new microsoft account. Can i delete my old xxx account to home group? >I try to disconnect to home group and reconnect...
Thanks, and sorry for my english... i'm Italian.

same problem here. really annoying. tried removing PC's from homegroup and making a new one, same thing.

finally got it, made every PC leave the homegroup followed by the dns flush and releasing the IP's then renewing them. no more clone