Use one of these first three methods if you’re changing the built-in Administrator account name. The last method works only for regular accounts that have admin rights.
Local Security Policy
This is the quickest method, even if you’ve never heard of or used this part of Windows. There’s a policy called Accounts: Rename administrator account that’s easy to edit.
Computer Management
The Power User Menu provides access to Computer Management, the next best way to change the Administrator account name.
Command Prompt
You can also use the powerful Command Prompt. It isn’t as straightforward as the methods described above because you have to type out a particular command for it to work. Here’s exactly how it’s done:
Control Panel
If you do not want to change the name for the built-in Administrator account but instead just a user with admin privileges (or even one without), it’s much easier through Control Panel.
Why Change the Administrator Account Name?
Changing the account name is like changing the password. It prevents hackers from succeeding if their automatic password-breaking tools assume the default name hasn’t been changed. Don’t see it? You’re using your Microsoft account to log in, so you’ll need to change the name from your profile page on Microsoft’s website instead of following these steps. As the name explains, the built-in Administrator account has administrative rights. You can use it to install programs and make extensive system changes. It’s useful for those reasons, which is why some people choose to use it. However, it’s disabled by default, so using it requires you to enable the admin account manually. It’s not entirely necessary, though, because you can convert any user account to one with admin rights; it’s pretty easy to create and delete accounts in Windows 10. Nevertheless, if you’ve chosen to keep the built-in Administrator account enabled, it’s important to assign it a strong password and change its name. “Administrator” is chosen by default, so anyone with access to your computer knows right away that unless you’ve changed the account name, they can guess passwords using that username.
