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I go to a website and it tells me that it has emailed me a code. I have to go to another app to bring up my email to get the code. When I go back to Firefox using the recent apps feature, on my phone, Firefox reloads to the previous page and I have to start all over again because you've gotten rid of the page I was on, to put the code in. It's an endless cycle. Since I'm not actually closing Firefox why can't it open onto the page I was just on?

Device: Poco X3 Pro System Information: RAM: 6 GB + 5 GB extended RAM Kernel Version: 4.14.18 OS Version: MIUI 14 14.0.6

Issue Description: When I switch away from Firefox Mobile and return after even 1 second, the currently opened webpage refreshes every time.

Actual Behavior: Every time I leave Firefox briefly and come back, the webpage reloads.

Additional Notes: The phone is capable of keeping heavier apps in background. I am able to run PUBG Mobile and Call of Duty: Mobile at the same time without background issues, but Firefox still reloads tabs aggressively.

Troubleshooting Already Done: 1. Disabled battery optimization for Firefox 2. Enabled Firefox as locked app in recent apps 3. Disabled phantom process killer 4. Reinstalled Firefox

Moderator note: This question has been edited to specify the OS version based on the question text.

Hello! After I was on vacation for about 2 months, I suddenly couldn't receive any more emails. "Login to the server imap... failed." Why this - and what can I do? Thanks!

I Updated to Your Latest Thunderbird (Default) Update: And Now I Can't Open Addresses in A-Separate Window.... So I went Back to Previous Installation: And Now It Can't Find my Original Histrionic Emails on my D:Drive... I'm Trying to Reinstall my Original Version: And It's now Looking for mt Emails (which Don't Exist) On my C:Drive... It's Now Midnight Here and I'm Going To-Bed: I have Other Actives Saturday and Sunday Morning.... Can You Help Me Via my Email???? Lawrence W Emark X@verizon,net> Thank You!!!!

(PII redacted by moderator)

В очередной раз пропали все мои вкладки! По непонятной причине, после очередного запуска браузера, все вкладки (около 50) не открылись - только 1 последняя! У меня в данном аккаунте был профиль КАТОК, он пропал и я не могу восстановить его и вкладки в нем. Если Вы мне не поможете я навсегда перестану пользоваться Вашим браузером, т.к. слишком часто пропадают все данные!

I am unable to use my Firefox for desktop since the last update. It started refreshing by itself and, upon restart, I tried setting a main password but it never accepted one even though the same password works on Firefox mobile (which I am using right now to write this from an Android phone). I tried Uninstaller and reinstalling again wiping everything but everything I try to login to sync on Firefox desktop I get "Unexpected error" as soon as I type my email (it's not even asking for a password)

I am attempting to locate the "manage containers" option on the container drop down menu but it is not there. I have read several other threads and have tried cntrl+ about:config "which did not have a false option" clicking right, and then maybe left and every which way I could click, but nothing. The drop down menu does not move so as to reposition and possibly find what I can't find. I do have my scaling pretty high, I wonder if that could be the problem. Any help would be appreciated, you know how we like to change these kinds of options.

1. Enable the search box to the right side of URL box in browser UI.
2. Open new tab (empty URL box).
3. Press TAB.
4. The search engine SELECTOR becomes highlighted, instead of the search INPUT.
5. Web application software developer is blocked from typing search query right away.
6. Must press ANOTHER TAB.
7. This breaks the workflow. It never used to do this, you could type immediately after tabbing ONCE.
8. Search is disabled in URL box to facilitate local domain resolution/error and NOT trigger fallback searching.

Please revert the behaviour to normal, and make the single TAB operation focus on the search INPUT.

Can get(POP3), but can not send emails to a newly created personal outlook.com account.

the following error occurs when trying to send mail: Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)

all my setting are correct per thunderbird and microsoft:

  (smtp-mail.outlook.com, port 587,  STARTTLS, OAUTH2, xxxxx@outlook.com)

thunderbird error log file contains the following: . . . mailnews.smtp: S: 535 5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]

SmtpClient.sys.mjs:452:17 mailnews.smtp: Command failed: 535 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]; currentAction=_actionAUTH_XOAUTH2 SmtpClient.sys.mjs:578:19 mailnews.smtp: Error during AUTH XOAUTH2, sending empty response . . .

Based on my understanding its seems thunderbird is using SMTP AUTH instead of OAUTH2 as required for newer personal outlook.com accounts. Is my assessment correct? If so, is there a fix?