The account picture menu (aka: “user tile menu”) on the Start menu allows you to Change account settings, Lock the computer, Sign out, or switch user.
If you like, you can completely remove Sign out in the account picture menu on the Start menu.
When you sign out of Windows, all your open windows and apps are closed, but the computer is not turned off. Another user can sign in without needing to restart the computer.
This tutorial will show you how to add or remove Sign out in the account picture menu on the Start menu for all users in Windows 10 and Windows 11.