I have been using Thunderbird for quite a few years and all of the sudden I have been receiving the message below yesterday and it's still continuing with this error: Connection to sever imap.gmail.com timed out I have not changed any settings Tried all the different suggestions found online (checking port numbers, taking off anti virus, worked in troubleshoot mode, even un-installed Thunderbird and then re-installed, etc) The problem is still happening. Not sure if anything was changed on the back end of Thunderbird but I cannot receive or send emails at this point. Please advise. Thanks!