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I've been running Tbird on Windows for many years. About 2 weeks ago something changed, either in Tbird or at Microsoft, which stops me from sending to the Office 365 SMTP server. I can send and receive using Outlook on the Office website, but I can't send locally from Tbird. Error message screenshot herewith. I have tried every possible permutation of server settings, which currently are:

Server name: smtp.office365.com Port: 587 Security: START/TLS Authentication: OAuth2

MS support says these are correct, and they are at wits' end to understand what is going on. They asked me to ask Tbird support, so I am.

I should add that at about the same time I started getting SMTP rejections in Gmail on my Android phone, and miraculously that was corrected yesterday, without any action from me. There is something odd going on at Microsoft - does anyone know what it is? My other accounts on Tbird work fine of course.

TB working fine, then next day opens up as Blank screen and a setup tab Profile shows to be still there as do mail folders .... so need to recreate profile.

Created a new Profile I copied over the folders:

 IMAPmail
 Mail

and the following files

 key3.db
 logins.json
 cert8.db

and all of the pref.js files (1 through to 141)

The profile folder does show new profile active ( as per this pic https://flic.kr/p/2pjRyRz)

I created the 2 IMAP account login details, I now have access to the inbox for 2 IMAP account, but I do not have any the filed mail (local folders) how do I get these back. This is an important item for me as many years of filed emails.

I have been using Thunderbird for many years and have previously updated without problem. But upon updating to version 102.1.2 I suddenly couldn't see my folders or emails (see attached image). However, if I search for an email I will get a list containing the relevant emails, but as soon as I click on an email in the list I go back to the blank screen like at login with no folders or emails.

I have trawled through related fixes and have tried deleting all of the .msf files in my profiles but to no avail. I really hope that someone will be able to assist.

I have had the same issues with TB freezing and locking up my PC that many here have had. For me, this has now gone on for almost 3 years. I have done everything I can think of, and everything I have read about online to deal with the constant freezing. I have: --upgraded countless times (now on Ver 102.9.0, 64 bit, Win 10, 32GB RAM, 3TB hard drive) --reinstalled Thunderbird many times --deleted various profiles and created new ones, deleted various config files as suggested. --reinstalled Windows 10, upgraded all associated files, drivers, etc. --started Windows in Safe Mode --disabled all add-ons and extensions in TB --reset all toolbars and controls in TB --started Thunderbird in Troubleshoot Mode --gave an exception to TB in my Windows Defender [and turned off Defender entirely] --ran MANY virus scans --disabled ALL virus software

Thunderbird is the ONLY piece of software on this PC that locks it up. It exhibits the same behavior that many here are seeing: freezes when I try to click on something; freezes when I try to reply to an email; freezes for no apparent reason. I can't MAKE it freeze up... it just seems to do it at random, constantly. Right now, it's open on another screen and has been frozen for about 3 minutes, and just unfroze. Most of the time, it freezes so that I cannot shut TB down. It is completely unresponsive. Sometimes it will freeze the computer so that I cannot do ANYTHING... I cannot open Task Manager and force a shutdown. Eventually, it releases and works again, only to freeze up a few minutes later.

I'm pretty much out of ideas, but I continue to browse online, looking for answers. As I said, three years of this is enough, and I see complaints about this going back even further. I love Thunderbird. I'm a longtime user and have not found any email client that comes close to the way TB works for me, so I'm VERY reluctant to leave. But I'm really tired of being a beta tester. And yes, I have donated many times over the years, and I'm happy to do so. I'm not concerned with the money. I just want it to work like it used to. If you have any fresh ideas, I'm very open to hearing them. But a warning, that I have likely already tried the fixes offered. I appreciate any input, in any event.

So, unless a miracle comes along, I reckon I'll have to cut bait and find a replacement for Thunderbird. Thanks for allowing me to blow off some long-held frustration.

best,

--john

I have created a HTML signature, defining the font, size, color and bold - as below However, the color is not taking effect and remains black, despite it showing so in web based html editors.

EG:

My sig text here

I have a very small Tablet computer and Thunderbird is really bogged down on it. The tablet has a 32 bit processor, 1G RAM, 64G SD drive. (1) When I run TB I get many "not responding" messages from Windows. (2) Maybe 1/2 the time, if I "delete" a message the screen will freeze on the message. The message is removed from the inbox list. I have to click "X" to get rid of that screen. (3) Get Messages no longer works. When I click it, nothing happens. The status bar at the bottom remains on the last information displayed. I found that if I use View, Folders, All, I can bump TB to get messages. (Normally I use Unified Folders) The status bar will display each of the accounts it is checking and any new messages will appear. These things have been happening through many many versions of TB. Although #3 seemed fixed a few weeks ago but has returned. Same for #2.

I looked at the disk space that TB is using and found that TB is using over 10GB. See attached. I don't know why it is so large. I don't need to store any messages on this computer. I have a desktop that is my "base station" where I want to save all (but deleted) messages.

I don't know if this large amount of TB space is contributing to the problem. Any help would be appreciated.

I installed a new Thunderbird because my 12 year old installation had 187 GB!!! Then I saw that the new installatinio is growing!! every day about 2 GB. The growing thing is imapMail ... I have only ca 1500 mails.

Every few days, when I'm actively using Thunderbird (v102.5.1 32-bit, on Windows 11 Home), a white rectangle appears at the top of the page (see snip attached - if 2 appear, delete 1). The interesting thing is that this box persists IN THE SAME SCREEN POSITION, EVEN WHEN I MOVE THE THUNDERBIRD WINDOW AWAY. It overlays everything else on screen at that position, making use of any icon or button beneath it impossible. However, by moving the cursor across the box, it is clear that whatever is beneath IS being recognised by the cursor (as it changes style when above a button etc); clicking at that place does activate it (eg opening a file from a desktop icon). I have found no way of removing the box (which can't be moved) other than rebooting the PC. This anomaly was happening BEFORE both the upgrade to Windows 11 (from 10) AND recent Thunderbird upgrades. I can find no clues from searching here or elsewhere - help would be much appreciated. Thanks

Since updating Thunderbird, I cannot access my Microsoft account. It shows the 'Authenticated but not connected' error message. I can access my emails on my mobile phone but not on my computer. I have changed the disable IPv6 to true, deleted my stored password and entered it manually .... nothing seems to be working. Any ideas? Thanks in advance

Win7 AMD quad core 64 bit desktop. A few days ago, Tbird 91.10.0 started failing login to both my gmail accounts; wouldn't download mail. When I checked account settings, the 'oath2' parameter had been changed. I re-selected 'oath2', and re-entered my passwords, and everything worked (getting and sending email, both accounts). Last night, when I tried to *send* an email, I got an 'enter password' popup. Entering the password (same one that worked to get mail) did not work, for either account. Today, the problem persists after rebooting, etc.

Gmail's web interface allows logins, receiving and sending mail for both accounts on the same computer.

The seemingly most applicable (closed) thread says to, among other things, enable cookies, but gives no direction as to where that setting is located.

Any thoughts on cause or cure? As I said, this failure just started 'out of the blue' a few days ago. I've used Tbird for many years without any of these issues.

Thanks for any assistance, Charlie

I have Thunderbird installed on two computers.

On one of the computers, emails being held in my inbox are being automatically removed after two weeks (this is not a desirable action, I am loosing important emails), but on the other computer that is configured exactly the same, emails remain in the inbox indefinitely (which is desired).

Both computers are POP and both configured to run the same email account and appear to have all of the same configurations and settings. I saw someone had posted the same problem a while ago and the reply indicated it may be that the ISP or email provider has their settings set to delete emails as per the two week window, but as I can assure you this is not the case, it is a configuration issue with one of the Thunderbird installations, otherwise both of my computers would be deleting the emails while that is not the case.

Thanks,

Jeff Rogerson

I am using Thunderbird version 31.7.0 and it keeps randomly crashing when usually when I try to send an e-mail. The e-mail appears to go out, but it is not copied to my send folder. I can keep it working is I use safe mode.

My Crash links are: https://crash-stats.mozilla.com/report/index/9e388085-aa3d-454c-bf55-924102150612 https://crash-stats.mozilla.com/report/index/2613f4fa-89d4-49c3-92ad-4f3292150612 https://crash-stats.mozilla.com/report/index/a5f726e5-8f62-40a9-9087-4bab92150610

Hopefully someone has an idea how to fix this. It appears every crash is for the same reason.

Thank you for your help.

OK, I asked this question many months ago and still don't have a solution:

I inadvertently changed the background of my Thunderbird to black with white text. I have NO idea what I did or how to get it back. I tried this: Menu app icon (3 lines) > Preferences select 'General' Scroll to 'Language & Appearance' click on 'Colours' Text = white Background = Blue uncheck - do not select 'Use System colours' 'Override the colours....' select 'Never' Click on OK

I really hope that someone can help! Thanks in advance.

I just installed Thunderbird for the first time...

it didnt even download at 1 time from gmail

i am now getting a timeout issue for trying to send my first e mail... I CANT EVEN ADJUST ANYTHING to be able to try again with more time...

and i thought Thunderbird was supposed to be better than outlook... HMMM

i have the latest version of TB with win 10

i want to be able to send e mail without time out issues this is thanksgiving geez

HELP!!

Starting yesterday 1/30/2023, when I open Thunderbird, it immediately freezes after about 5 seconds after opening. The spinning hour glass immediately starts and I have to literally close out of the entire program in order to get out of it. I open Thunderbird up and it happens again. I have tried opening in safe mode and disabling all add-ons, but it still freezes after 5 seconds and crashes. Is anyone else experiencing this and what can I do to correct this?

A few days ago, Thunderbird asked for the password to my Yahoo mail account. I've been using Thunderbird to access my Yahoo emails for a few years and I haven't changed the password, so I thought it was strange, but I entered the password. I can access my Yahoo emails through other apps without a problem. I think I may have entered the wrong password first time, but checked the password on the other apps, so I know I'm using the right one now. I'm getting the error message "Unable to login at server. Probably wrong configuration, username or password." I've tried removing the email account and re-adding, but it still fails with to connect. Anyone have any ideas, thanks.

Thunderbird’s connection to one of my gmail accounts failed today.

I removed the account and then tried to add it again to Thunderbird.

When logging in using a Google generated App password, I receive the following message:

"400. That’s an error. The server cannot process the request because it is malformed. It should not be retried. That’s all we know."

OAuth2 is in place, and I’ve carried out all other recommended checks I can find on your website. My other Gmail accounts are working fine.

Please can you help? Many thanks.