so I'm considering enabling Defense +. During installation I only installed the

firewall. I’ve enabled D+ but it remains “Inactive” ,thus do I need to do a new install? Thank You!

Sound’s Better

https://forums.comodo.com/install_setup_configuration_faq/do_i_have_to_reinstall_cis_to_get_the_antivirus_or_firewall_back-t37962.0.html