How to show "switch user" screen after Windows-L?

"The Win+L is a system assigned hotkey and there's no option to disable it. This means there's no way for an application to detect it, unless you use a low-level global keyboard hook (WH_KEYBOARD_LL).

More information at this SO post here:
stackoverflow.com/questions/301053/re-assign-override-hotkey-win-l-to-lock-windows

The workaround would be to create a shortcut on your desktop that points to the User Selection page and assign a different hotkey to it:

Create a new shortcut on your desktop
Paste the following path in the Location box: C:\Windows\System32\tsdiscon.exe
After creating the shortcut, right-click the new shortcut and select Properties
In the Shortcut key box, enter a keyboard shortcut
Click OK
Test the results"