Here a simple step to remove GPO instaled software from your machine and make it reapply the GPO:
- Remove software from Control Panel -> Software
- Find and the clear the software UID from
HKLM\Software\Microsoft\Windows\Current Version\Group Policy\AppMgmt - OR delete HKLM\Software\Microsoft\Windows\Current Version\Group Policy completely
- open terminal/cmd as administrator and execute
gpupdate /force - and last, reboot the desktop
After a reboot the GPO should have been (re)applied and the software been installed.