Hi, I'm John! I will help you with this.
To help narrow down the issue:
- Where exactly are you seeing this old account (Windows sign-in, Microsoft Store, Office, or Settings)?
- Is it listed under Settings > Accounts > Email & accounts or Other users?
If it appears under Email & accounts, try this:
- Go to Settings > Accounts > Email & accounts > Select the old account > Click Remove.
If it’s under Other users:
- Go to Settings > Accounts > Other users > Select the account > Click Remove > Delete account and data.
If Windows does not allow you to remove it, please let me know.
Click "Add comment" to let me know.
Regards,
John J.D.