No connection to Firefox and Outlook in Kaspersky Total Security Posted August 24, 2022 26 minutes ago, Niskla said: I have the exact same issue. No connection on firefox - everything else working fine. And no, disabling port monitoring for 443 and 80 does not fix it. Any other ideas? If unblocking 443 and 80 did not help I'm not sure it is the same problem I had, but I will outline my troubleshooting steps for future internet dwellers and perhaps yourself: If you go to KTS>More Tools>Manage Applications>Application Control>Manage applications>Locate Mozilla>Select Firefox and right click Details and Rules - does it give you an error? about invalid/moved? If so, that was what my problem was. Backing up the old reports database and forcing it to create a new one solved it for me as you see below.