How do I remove all users from my computer?
Select Start > Settings > Accounts > Other users. Select the person’s name or email address, then select Remove. Read the disclosure and select Delete account and data. Note that this will not delete the person’s Microsoft account, but it will remove their sign-in info and account data from your PC.
How do I delete my main account on Windows 10?
To do this, follow these steps: Press Windows + I to open Settings, then go to “Your email and accounts”. Select the account that you want to sign out and click Remove. After removing all, add them again. Set the desired account first to make it the primary account.