Windows- Locking and Unlocking the Screen
If you're working on any of Omni's projects/tools and you need to leave your computer for a little while, you can protect your work by "locking" your computer. Locking your computer keeps your files safe while you are away from your computer.
A locked computer hides and protects programs and documents and will allow only the person who locked the computer to unlock it again. You unlock your computer by logging in again (with your ID and password).
The easiest way to lock Windows 11 computer screen is to use the keyboard lock.
- Press and hold the Windows logo key on your keyboard (this key should appear next to the Alt key), and then press the L key. Your computer will be locked, and the Windows 11 login screen will be displayed.
Now, to unlock your computer from the Windows 11 login screen, press Ctrl + Alt + Delete (press and hold down the Ctrl key, then press and hold down the Alt key, press and release the Delete key, and then finally release the keys). Or click anywhere on the screen to bring the password screen. 
- Enter your ID password. (Note: If you have more than one account, be sure to type the password of the account you were using when you locked your computer.)
- Press the Enter key or click the right-pointing arrow button.