It seems some people have blocked a file they shouldn’t have.
However, I did eventually get the answer “No updates available”, so my problem was with a busy server.
I hope the folks at Comodo change the update window message to “Server Busy” if the internet connection is OK. Some people have probably messed up their settings trying to fix a non existent problem.
I can understand something like error 106 if the connection/file is blocked and the server doesn’t even get accessed.
Rather than referring to the FAQ’s about Error 106 (after doing that about 303 times in the forum, and still failing, despite the mega merged sites), I’ll just list the possibilities:
Blocked CFP Updater: You blocked CFP from running the updater. Check your firewall rules
Blocked important process: You blocked something legit like svchost.exe from connecting out. Check your firewall rules
Busy server: Self-explanatory. Ah never mind. I’ll explain anyway. It means the Comodo update servers are busy or they’re under maintenance, etc. Try again later
IE Offline Mode: Your Internet Explorer is in Work Offline mode. Go to the File menu and uncheck the Work Offline to get rid of the checkmark (disable it)
No IE: You removed Internet Explorer like from nLite or something similar that strips Windows’s OS-integrated browser