Prevent Locking of Computer
If you want to prevent users using the Lock Computer button, or don’t want to do it yourself (perhaps you are used from it from work, and don’t want to do it at home) then this tutorial explains how to disable and prevent locking of the computer.
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1. On your keyboard press the Windows flag and the R key at the same time (Windows +R) or open Start.
2. Now type Regedit.exe (1) and click on OK (2)
3. Now Unfold HKEY_CURRENT_USER
4. Then Unfold SOFTWARE
5. Then Unfold Microsoft
6. Then Unfold Windows
7. Then Unfold CurrentVersion
8. Then Unfold Policies
9. Then Unfold System
10. Now double-click on DisableLockWorkstation and change the value of DisableLockWorkstation to 1
If the key does not exists then right-click an empty spot and choose New then choose DWORD.
11. Click on OK and close Regedit. A reboot might be necessary for the changes to take effect upon your system.
If you wish to disable this tweak at a later moment just repeat the steps above and change the value back to the original value, which was 0. If you have any questions about this tweak, please feel free to ask them.