As far as I know, there is no built-in function to achieve this. But you can do this using a third party tool.
Download the program – https://github.com/dechamps/laplock/releases
(Download the latest laplock.exe release)
Open the Windows Startup folder by using this run command – ‘
Add laplock.exe to your Startup folder.
You can also use Lid Lock to do this.
- Capture the close lid event.
- Trigger a lock-screen event.
From those sources, we can use
GUID_LIDSWITCH_STATE_CHANGE to detect the trigger, and run:
from the command line to send a lock screen request to the machine.
I don’t know what compilers you have available, or what languages you know, but this information should help you set up a program to do it for you.
I don’t use Windows myself, so I can’t build or test it for you.
Very likely because of the Extended Display Option set for the Monitor. Set the display only to Monitor, it should work.