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I 've used Thunderbird for several years without any issues - thank you for that - but suddenly, over the last two or three weeks when sending a message, I have been getting an authentication error message from my ISP and the e-mail is rejected. This occurs every time I try to send an e-mail after rebooting my PC.

A password change made no difference.

Incoming messages are not affected.

Clearly my ISP is blocking the messages because it is not receiving the correct password or account name - but why?

The workaround I have discovered is to enter troubleshoot mode, then send the e-mail (successfully). Then I can exit troubleshoot mode and any later e-mails are also sent successfully - until I reboot the PC and then I have to repeat the procedure again.

I am using v91.7.0 (32 bit) on a 64 bit PC and running two e-mail addresses, both of which exhibit the same behaviour.

I do not have any add-ons and I use default preferences.

Any help would be appreciated.

I can not send emails using thunderbird . I have tried to reply to emails, as well as different emails to a variety of recipients I get the following message. Go to https AUP#IPBL1000. I have not gone there, Is this a scam? How do I get back on track?

For the first time in a week I went directly to my GMX account but couldn't se my emails, contacts or any information other than the form layouts the pages are blank, however in Opera everything is seen. Also for many months Firefox doesn't allow the Recaptures to load so many sites, and services like sending of contact forms, wont work, its extremely frustrating as Firefox has all my passwords. I could go to Pale moon is the PW's can be shared as a FF user of over 20 years it is my preferred browser and would appreciate these issues resolved please.

I've been using Thunderbird for many years and have continued using it successfully since my office changed its e-mail service from serverdata.net to Office 365 several months ago. (Server outlook.office365.com, connection security SSL/TTS, authentication method Normal password.) All was working well as of late on Sat Apr 23. When I next called up T-bird (on my Win 10 laptop) late on Sun Apr 24, I could no longer login to my account. Verified correct e-mail address and password, but multiple attempts to login were all rejected. I could still get in to my account via Outlook at portal.office.com as well as Outlook on my Android, but I can't get in via T-bird....but I hate Outlook and really would prefer to get T-bird working again. On returning to the office the morning of Mon Apr 25, I tried as well with the T-bird installation on my Win 10 desktop (which, again, had long been working fine) and immediately encountered the same problem. So it seems that either there was a silent update to T-bird on Sun Apr 24 which broke T-bird's ability to connect to IMAP on office365.com, or Microsoft did something to the IMAP service on office365.com on Sun Apr 24 which broke T-bird's ability to connect to that service. Yes, I know I could get the Exquilla extension for T-bird and try connecting via the Exchange protocols, but before I do that, it sure would be nice to know whether it's T-bird or office365.com that broke. Anybody else having the same experience? Any solutions figured out yet (other than Exquilla)? Thanks for any insights!

-- Larry Afrin

My Thunderbird set-up has worked fine for years so I was surprised to discover two days ago I can no longer send emails. I have a Gmail SMTP account which I have never previously have a problem with.

Thunderbird updates automatically and I am on version 91.8.1 - it's possible the problem began when the new version was downloaded but I don't know when that was.

Whenever I try to send an email I get the error:

The message could not be sent because the connection to Outgoing server (SMTP) smtp.googlemail.com timed out.

Here's something I've never seen in more than 20 years of using Thunderbird. It's more of an aggravation than anything else, but I'm asking about it because I hope it's not a sign of something more serious:

I receive: "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.office365.com timed out. Try again."

But the message does send. This happens mostly with my Hotmail account, but also sometimes with either of my two Gmail accounts.

This started after an update to Thunderbird; one of the v. 91 updates, I think. None of my settings changed and I've done nothing different to the Thunderbird settings in years. I'm running Thunderbird on Xubuntu 20.04, 64 bit, and the current Thunderbird is 91.9.0.

Any thoughts? And thanks for your help.

For about a month how I find that the Firefox download list opens by itself multiple times during the day. Most of the time I'm not even actively using firefox, it's just idling in the background. When it first happened I figured it'd be a quickly patched bug and so didn't ask around about it. But I've had a ff update since then and it still happens. Does anyone know why this is happening? I have not seen reports of this via search.

I'm on ff 9.0.1.

After i just updated Firefox to newest version .. I can not load any website anymore!!!!!! please make it so i can return to the previous version ASAP so everything works again.

Al those other solutions you guys give like clear cache disable en able etc don't work and take hrs of time

When oyu push a other update through some 1's throat atleast make it that it A)works B) option to roll back . TY

Not sure if I've done something to cause this, or whats happened or if this is a bug in the beta release I'm using.. 101.0b2 (64-bit)

When I open an email from the inbox view to read it, it always goes into write/edit/reply/send mode(not sure what to call that mode). It's only just started to happen.

Is this a config/settings error I could have caused ? Other Suggestions?

++Mark. https://ctproduced.com

I tried to log in to my bank and it says "access denied." I may have changed a setting or something on Firefox or my VPN. I'm confused, am not very computer savvy. I went to Apple store last weekend for phone and they said I should use Safari for info security, so I made that default on my Mac Mini (where I'm writing now) for a couple days, but then got blocked from a website where I plan to apply for a job, so I went back to Firefox, after I read articles saying that Firefox is more secure. I am using a VPN, so is that part of the problem ? (shouldn't be, because I have had that for a year or so). I don't know what to do, and it is after 12:45 am now, and I have to go to bed, have to get up for work in 6 hours. I hope someone has some help for me when I log in tomorrow. I hope that I have not been hacked. Thanks for reading!

My picture-in-picture remains in full screen, even if I double click with my mouse. When I click the ESC button it just closes completely. I have restarted both Firefox and my computer, but I keep getting the same problem. Not just in YouTube either, also on other websites.

$ dnf list installed | grep firefox firefox.x86_64 100.0-4.fc36

Since upgrading to Fedora 36, Firefox seems to have stopped being stable at all. Having any add-ons enabled causes webpages to frequently break. Even in troubleshooting mode, I get a tab crash immediately on start, and infrequently during later browsing.

Troubleshooting mode has the same issues, trying a completely clean profile has the same issues. Chromium works with no issues.

See tab crash report here: https://pastebin.com/wNPFhpgN

After update to above Beta I keep getting mailbox filter errors on Default account, occurs at start-up & when some new messages arrive that are sent into the filters . See screenshot attached. Many Thanks

Hours after exiting firefox, the application continues to run processes and hold on to the memory it was using when I exited the application. The only way to free the memory is to key the processes via Task Manager

Starting last night Firefox will not let me download anything. If I click on a download link, my Mac toolbar goes gray like normal, but no download dialog box ever appears. I have confirmed the dialog box isn't hiding behind any open windows on my desktop, and I have tried rebooting my system with no change.

Please help me fix this.

Greetings. I can't open most sites I usually visit (even google.com) via my Firefox 98.0a1. This happens since today. All error codes are SEC_ERROR_LIBRARY_FAILURE.

Tried to:

• Disable DNS-over-HTTPS.
• Disable HTTP/3.
• Disable proxy (never had it enabled anyway).
• Disable sending info to Firefox developers.
• Change settings of DNS-over-HTTPS.
• Restart the browser (after each action).

Nothing helps me... But I still can visit some websites, but most common resources are not working for me. Please help me because I can't use Microsoft Edge without getting mentally ill. :/

I can't no longer use "wetransfer.com" Their homepage does not load properly and no matter what I click on this page it starts using the CPU 100% and slows down everything and nothing happens anymore. I whitelisted this website in all privacy-extensions, and because in a flits I saw that "firefox essentials" was blocking something - despite the whitelist - I uninstalled it. To no avail. Firefox 100.0.1 (64 bits) under Windows 11 home 64 bits. How can I find out what is the problem ? Thanks for helping out.

Ferdinand

On May 20, 2022, in a few days, Google will turn off "unsecure access" to Gmail from Thunderbird and Outlook. This will require changing the Thunderbird account settings from "Normal Password" to "OAuth2" for verification. Problem is OAuth2 verification will not work on my Windows 7 laptop. It just runs in circles. A Google page opens, asks my Google account password, accepts it, and then shows a page asking to allow access to the account. Saying yes just closes the window, but no mail gets POPed down to Thunderbird. In my testing, OAuth2 does work on my Windows 10 laptop. If you are as stubborn as me about still using the Win7 computer, you can change your Google account to use 2-factor verification. They will call you or text you every time you log in to the Google account itself, or you can buy a USB dongle. Once you have 2FA setup, you can go to the "Security" sidebar in your Google account, and create an "app password". I said "Mail" and "Windows Computer" and it generates a 16-letter password shown as all caps, but when cut-and-pasted in my Keepass password manager is all small case. You can then go back to, or stay at "Normal Password" in your Thunderbird account settings, and when the password to your Google account fails, put in the app password and check "Remember in Password manager". Then you can POP emails from Gmail again. I don't know if Outlook has these problems. I assume IMAP on Win 7 might have these problems. I did create a new T-bird profile just to try this out. I detailed that misery quest in a previous post: "Almost can get Gmail with 2FA" https://support.mozilla.org/en-US/questions/1369836

The sad thing is my Google password is 15 characters alpha mixed with numeric, I assume case sensitive, and also special characters. So it is much more secure than the app password Google assigned me. Especially more secure now that hackers know our email password is 16 alpha non-case-sensitive. Oh well, that's Google for you. Don't blame them, blame the idiots that set their passwords to Password1.

After figuring out this with the new test Google accounts I made, I just switched one of my three "real" Gmail accounts to 2FA, and an app password for mail. If I read right, if you try to outsmart the system and drop out of Google 2FA, it also invalidates all your app passwords as well.

It would be nice if the T-bird team could see why OAuth2 verification fails in Win7. I posted results in my T-bird error console in that previous post. I hope this is a weird thing that only affects me, but just in case, I thought I would post this for other Win7 dinosaurs out there.

Hi,

I have a strange problem with Thunderbird (currently 91.8.1 on Linux, but have this problem for a while). Initially (i.e. after each reboot) Thunderbird works normally but at some point when I start Thunderbird all I can see in the folders list are one entry for each account (see attached screenshot). I can still edit account details. But the only way to make it work again is to reboot my system. Just logging out and in is not sufficient. I tried to start Thunderbird in safe mote or to get some log details but nothing helped or got me a step further.

Today I experienced something new. I worked with Thunderbird and didn't close it (and also didn't suspend or hibernate the system). At some point when I wanted to visit the sent-item-folder I got an error message (unfortunately I didn't make a screenshot) that the folder couldn't be loaded. Then I couldn't open any folder. After restarting Thunderbird I had the problem of above.

Hope someone has an idea how to fix this.

Alex