Use these checks in order:
- Remove the old account from Windows
- Open Settings > Accounts > Other users.
- Under Other users, select the old account.
- Next to Account and data, select Remove.
- This removes the person’s sign-in information and data from the device. It does not delete that person’s Microsoft account.
- If the old account is a work or school account, disconnect it
- Open Settings > Accounts > Access work or school.
- Select the dropdown next to that account and choose Disconnect.
- Select Yes to confirm.
- This removes the sign-in information and data from the device.
- If the old account still appears on the sign-in screen, remove the old local profile entry
- Warning: deleting a profile can remove local data for that profile.
- Press Start, type sysdm.cpl, and open it.
- Go to Advanced > User Profiles > Settings.
- Delete the old user profile if it is still listed.
- Remove the leftover sign-in entry
- Press Start, type netplwiz, and open it.
- Remove the old user if it is still listed.
- Restart the laptop
- After restart, only the remaining account should appear.
Important:
- Make sure the new account has administrator rights before removing anything else.
- If the old account is the built-in Administrator account, disable it instead of deleting it.
References: