Start+L (lock computer) keyboard shortcut no longer working

As the title says, in my Surface Pro 4 (the latest one released in 2018), the start+L keyboard shortcut no longer works. This shortcut still works in my other Surface Pro 3.

This started happening a few weeks ago. I've found (elsewhere online) some users have reported that adding a registry entry in the following folder fixes this:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System

However I am hesitant to modify this because I have no 'system' folder in my 'policies' folder in either of my devices, and the SP3 seems to be doing fine with out it:



I use a Logitech bluetooth keyboard for both devices.

Any ideas?

dalchina said:

Also please see this tutorial:
Enable or Disable Lock Computer in Windows | Tutorials

I don't have a 'Winlogon' folder in my 'CurrentVersion' folder:

If you disable lock computer, Lock will also be removed from the Start menu, Power menu, Ctrl+Alt+Del screen, and Alt+F4 Shut Down Windows locations in Windows.

I will check when I get home, where the SP4 is. Presently I am at work with the SP3 (where the Alt+L hotkey is working properly) and I don't have a 'lock' option in the start menu/shutdown box:



But I do see it when I Ctrl+Alt+Del.

I tried Alt+F4 but it opened a new browser tab in place of this one (forcing me to retype all of this because the forum didn't save it). I will check on the SP4 when I get home.

I have a Logitech K480 keyboard. There's no Windows key:



Even Ctrl+Alt+Del does not work.

I have decided it's a problem with this keyboard because I used a USB keyboard and everything works as expected. I'm off to the Logitech forums to see how to reset this keyboard.

Thanks.