Cant reinstall broken install after SBSAD Immunising

So ive been working on this all day…

I have Comodo firewall free v

I recently used spybot search and destroy immunise feature.
Sandbox stopped working. So i though id reinstall the comodo firewall

Uninstall brings up two boxes in windows uninstall program:

“The system administrator has set policies to prevent this installation”


“you do not have sufficient access to uninstall comodo firewall, please contact your system administrator”

I tried a few things on the forums.

I removed the yahoo homepage in the browsers

I CCleaned
The tryed to remove it from there too. Then I got:

“the windows installer service could not be accessed , this can occur if the windows installer is not correctly installed. Contact your support personel for assistance”

I looked at a clean up file on this forum: But it was from 2014 with no checksum.

So i am unsure what would be the safest way to proceed.