After TBird 52.5.0 upgrade, can't receive mail now on one of my PCs
I have TBird 52.5.0 on a 32 bit Win 10 laptop and also on a 64 bit Win 10 desktop PC. My TBird was updated a few days ago. The TBird on the desktop is working fine. The laptop TBird now does not receive mail but can send mail.
When I attempt to retrieve new emails, I see messages like connected to pop.mail.xx server checking for new email messages and especially
Downloading message 1 of 990 ....................... but it never actually downloads any messages and eventually
get 'Failed to connect to server pop.mail.xx'
I have read through various solutions/items in other questions from users experiencing similar symptoms... ie
I have rechecked my config which hasn't been changed for many months and it agrees with my ISP definitions I have turned on and off the Windows firewall, thunderbird app is defined to pass through the firewall. I have looked in logs for any blocking/issues due to my Bitdefender Antivirus I have stopped and started TBird numerous times and rebooted numerous times over the last 4 days with no improvement
I had moved all my messages from the Inbox to various other folders and have done a repair folder on the inbox. My Inbox had been quite full initially.
Chosen solution
Try to start Windows in safe mode with networking enabled. - Win10 https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode
Still in Windows safe mode, start Thunderbird in safe mode. - https://support.mozilla.org/kb/safe-mode
Does the problem go away?
Read this answer in context 👍 1All Replies (4)
Chosen Solution
Try to start Windows in safe mode with networking enabled. - Win10 https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode
Still in Windows safe mode, start Thunderbird in safe mode. - https://support.mozilla.org/kb/safe-mode
Does the problem go away?
I followed the two suggestions and was able to receive my mail while in safe mode for Windows and Thunderbird.
I then restarted Windows 10 in normal mode. I tested Thunderbird again and was able to receive mail.
Not sure what was 'magically' altered through this process because I didn't make any changes to Bitdefender, Windows Firewall, Thunderbird definitions, etc.
Thanks
Windows safe mode disables anti-virus software which is most likely the culprit. Thunderbird disables all extensions, including those installed by anti-virus software.
If the problem reappears: Create an exception in your anti-virus software for the Thunderbird profile folder, so that the anti-virus real-time scanner will not scan it. http://kb.mozillazine.org/Profile_folder_-_Thunderbird
Don't let your anti-virus software scan incoming and outgoing messages.
Don't let your anti-virus software scan attachments.
Don't let your anti-virus software intercept your secure connection to the server.
Remove any add-ons your anti-virus software may have installed in Thunderbird.
Keep it working. http://kb.mozillazine.org/Keep_it_working_-_Thunderbird
And last but not least, backup your Thunderbird profile on a regular basis. https://support.mozilla.org/kb/profiles-where-thunderbird-stores-user-data#w_backing-up-a-profile
Hi I experienced the problem again today and accessed my emails again using the safe mode process.
I have excluded my TB profile from Bitdefender virus scanning and have received some emails. I will research how to implement some of the other antivirus related options you have identified.
If I experience any further issues I will look into other options you have identified. I have a few TB addons that I left alone for now.
Again... Thanks for your very thorough list of potential issues to consider.
Bill