Windows - turn off high contrast mode via GPO or script?
Solution 1:
The only way I was able to solve this is to load another "Theme" in windows. To do this, I created a login script that loads the default windows theme, the script contains the following:
@echo off
C:\Windows\resources\Themes\aero.theme
Loading a theme this way did indeed reset the high color contrast settings at login, but it opened a control panel window at each login, so I changed it to:
@echo off
C:\Windows\resources\Themes\aero.theme
taskkill /F /IM systemsettings.exe
The new line killed the control panel window after applying the new theme.