Windows screen macro key

I've only just upgraded from Windows 7 to 10 (yes I know about time), whilst on Windows 7 I had a macro key that was my Windows password and so long as Windows was logged in but locked I could use that key to enter my password. Now that I've upgraded to Windows 10 this functionality no longer seems to work. Booted up, logged into Windows, verified that synapsis is running and logged in and that the macro key works, locked Windows and the key (or any of them) will not enter a password on the lock screen. Is this something that was patched out, or a setting I can change to make this work on Windows 10?