Error 27502 when trying to update, or uninstall

ONYX Installers and Operating Systems
1

Hi, I’m using Windows 10 and had Onyx installed, but it stopped working properly so I tried to uninstall it and started getting this 27502 error.
Annotation 2020-03-25 130012

I’ve tried:

  • Onyx cleaner, but Onyx doesn’t get uninstalled
  • FixLoginError.vbs as admin
  • Rebooting

But none of those have worked for me. What else should I try?