Can't install, period.

I have tried so many suggestions but nothing seems to work. The latest installer keeps giving me a “package corrupted” error and can’t install, closing the installer after hitting accept.

Is this problem not common? I can’t find a proper solution.

Which installer?

Latest one, downloaded yesterday several times from comodo’s website. Tried Firewall alone and CIS

Try the installers in the release topic and if it still fails run this removal tool via right-click run as administrator, then reboot once that completes and run the installer again.

Thanks for the links, I’ll try them at home later today.