Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Open

can not get email after latest update 154.0

Keebler

after latest FORCED update 154.0. I can no longer get ANY email - send or receive please help

after latest FORCED update 154.0. I can no longer get ANY email - send or receive please help

All Replies (5)

have you tried the suggestions in the respective support articles.

See https://support.mozilla.org/en-US/kb/cannot-send-messages and https://support.mozilla.org/en-US/kb/cannot-receive-messages

My personal guess is if this occurred immediately after an update you probably have an antivirus problem, not a Thunderbird one. If you use any antivirus other that windows defender, try uninstalling it to see if mail just starts working again. Defender will protect you after the uninstall

I have gone through the normal troubleshooting practices prior to posting here (checking internet connection, checking email account information (address, password, etc), restarting thunderbird, etc) note: there were no issues prior to the update


thank you for the articles per the articles 1) disabled VPN - same issue (failed sending test email) 2) disabled AVG antivirus - same issue (failed sending test email) 3) checked firewall (thunderbird was NOT allowed) - same issue (failed sending test email) 4) added thunderbird to the outgoing and incoming - same issue (failed sending test email) 5) disabled firewall - same issue (failed sending test email)

all the IMAP use port 993 and are mostly gmail accounts (I did check both SMTP servers send/rec email - same fail) SMTP uses 465

so everything failed i had to remove thunderbird completely reinstall thunderbird and recreate my accounts (that sucked!!!)

everything works now, except my calendars are all messed up (they all say calendars temporarily not available) i do not like this new version so far

re :checked firewall (thunderbird was NOT allowed) Thunderbird should be set up as an allowed program to ensure it works and is not being blocked.

re :disabled VPN Good idea as you use gmail. Gmail does not like it if you have a VPN because it hides your IP address.

AVG: AS it is likely to be controlling the Firewall, if you disable it, then it's likely the Windows default Firewall will take over, so it's better to just set Thunderbird as allowed program in Firewall.

AVG is often a problem. The AVG support forum often has these types of reports and disabling the Email shield fixes most receiving and sending issues.

re :(they all say calendars temporarily not available) Who is 'they' ? If you get error could you upload an image file showing the error and where it appears.

Home calendar - the default in Thunderbird - is that calendar ok ? GMAIL - I've managed to get my basic gmail calendar and the Holidays calendar working, but currently can't see the others eg: Birthdays. in the list.

I've also used Thunderbird add-on - Provider for Google Calendar 128.5.12 https://services.addons.thunderbird.net/eN-US/thunderbird/addon/provider-for-google-calendar/ It has allowed me to also see 'Tasks'.

so, i found that the issue (that i do not like) lies in the NEW version of Thunderbird 154, to be specific.

by simply deleting all my old copies of Thunderbird (and their supporting files) and installing an older version. i was able to get my email and calendars back to the way i liked them. it was a pain in the butt, but i am once again happy in Thunderbird land.

i do not like or care for the forced updates, so they are turned off now :)

thank you for your help. you helped me see that the issues i was having, were all tied to the new version of Thunderbird. so it made it quite simple what to do next... revert back to an older version. so looking at the the Thunderbird archive. i found the version i wanted and installed it. there was NO issue with this version with any of the security, (AVG, or my VPN).

one of my issues was with the calendar i do not like the new calendar and wanted the google calendar as my default. there was no native way to do that in the new version. also, the look and feel of the inbox and messages were off and left a bad taste. the older version brought back the Thunderbird i really enjoy using with the look and feel i am happy with

note: i had to reinstall every email account again since the update changed my profile. and there was no way to correct that... (another reason i do not like the forced updates); but, everything is good now thank you again! :)

Athraithe ag Keebler ar

AS a heads up:

  • Settings > General
  • scroll down to 'Updates' section
  • I presume you have selected 'Check for updates, but let me choose whether to install them'
  • If you also uncheck/do not select 'Use a background service to install updates'

That forces the Windows UAC to prompt a 'do you want you allow update' window. So, if you did click on do update and then thought - no - that was a mistake. Then because you get the extra UAC prompt, you can still stop it by saying 'No'.

Cuir ceist

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.