Sorry I’m no further ahead than from your last post 11 days ago, if avast isn’t installed (please confirm), then you firewall shouldn’t be blocking ashWebSv.exe (web shield) provider.

If it is still installed the potential for conflict is very possible and may be the cause of the problems. So it should be uninstalled and rebooted then run the uninstall utility, neither of which you have confirmed.

Previously with avast there was a problem with the privacy function of zone alarm pro and the avast web shield proxy. When you log-in on an http page, flip to an https (secure) page for validation and back to an http page to view your email, parameters are passed and the firewall was blocking this action. I don’t know if something similar to this is happening with comodo and Trend OfficeScan as I have absolutely no experience of this application. However, when this did happen I believe there was a page displayed with an error.

I don’t know if reinstalling the comodo firewall will be of any help or ultimately having to reinstall the Trend officescan on this system.