Windows 10 comes with a Guest account that allows guests to access your computer without having to create an account. However, you may want to disable the Guest account so that only registered users can access your computer. ..
Select the Guest account from the drop-down menu. If prompted by User Account Control, click Yes. Select the Guest account from the drop-down menu. Select the guest account’s turn off the option.
In the Search box of the Open Search bar, type guest account and select Settings. Select Enable Guest Account from the drop-down menu. In the Manage Accounts window, click Turn off Guest Account and then follow through with the on-screen instructions to end it. Make sure you close all applications that are using your computer before turning off your user?
Right-click the Start button and select “Run as administrator”. Select “Open User Accounts” from the drop-down menu. Next, select “Open”. Then a window should appear with a list of users. If the Guest is on the list, remove it.
Disabling Guest Accounts Is Important for Security. A user who is logged in with a guest account on a Windows system that belongs to an employee at the company may have access to everything stored on the system, including files, shares, and applications.
To remove the Administrator account from Windows, right-click the name and select Delete. Close Registry Editor and restart your computer. The built-in Administrator account has been removed successfully from the Local Users and Groups window when you reopen it.