Games that UPB doesn't support

[seljuklu]

it doesn't work with medieval 2 total war

[seljuklu]

it doesn't work with battlefield bad company 2

[clausagerskov]

doesnt work for the witcher 1 enhanced edition

[ZcheK]

It was working in Skyrim SE but it's not working in the Aniversary Edition.

[d4ws]

works on dark souls 3 but not on elden ring

[clausagerskov]

interestingly it works on NWN2 which has the same engine as witcher 1, so must be something to do with how witcher intercepts keypresses. can manually suspend just fine using resmon

[clausagerskov]

can confirm that it works fine on witcher 1 if one sets the "ProcessNameToPause" to "witcher.exe" and alt-tabs before pressing the pause button so must be a problem of the process intercepting key presses
I have created the following batch scripts:
run_pause_button.bat (runs the other bat file and resets the regex processnametopause after closing):

@echo off              
echo "Starting UPB with witcher mod"             
CALL run_upb_witcher.bat < nul            
echo "Resetting witcher mod"      
SET KEY_NAME="HKEY_CURRENT_USER\Software\UniversalPauseButton"  
SET VALUE_NAME="ProcessNameToPause"  
SET DATA=  
reg add "%KEY_NAME%" /v "%VALUE_NAME%" /d "%DATA%" /f

and run_upb_witcher.bat (sets the processnametopause to witcher.exe and runs the upb exe):

@echo off  
SET KEY_NAME="HKEY_CURRENT_USER\Software\UniversalPauseButton"  
SET VALUE_NAME="ProcessNameToPause"  
SET DATA="witcher.exe"  
reg add "%KEY_NAME%" /v "%VALUE_NAME%" /d "%DATA%" /f  
CALL UniversalPauseButton.exe  

still need to alt-tab first before pressing pause though