Fatal error when installing firewall on Windows 10

i’m trying to install the comodo firewall for win10 but i cannot do it because it seems to be the old versione of comodo in the system. New installation giveS me a fatal error during the process.
pLZ, I NEED TO REMOVE COMPLETELY COMODO FIREWALL free and then try to reinstall it (maybe!!!)
Anyone can support me plz?

Please follow Most Effective Way to Reinstall/Update CIS to Avoid/Fix Problems and see if that does the trick.