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I had a working thunderbird/gmail connection until my main drive went to SSD heaven. Yes, I have current backups but I took the opportunity to move to a Win 11 box so all my data is safe but might be in different places.

I can log into gmail but can not configure thunderbird to do that. The Account Hub does what it is supposed to and all is well up to Password question. The gmail password does not work and I can't remember ever giving thunderbird a password. My mozilla accounts all refer to a domain that I gave up 5 years ago,

Any suggestions would be very appreciated.

Please answer with a copy to [redacted] as I may not have access to [redacted emails from public community support forum] -bill

Since about November 2025, all the mails I try to sent to @sfr.fr addresses (different recipients) fail and I get the following message: Sending of the message failed. An error occurred while sending mail. The mail server responded: <xxx.xxxx@sfr.fr> recipient domain rejected (blacklisted by local policy).

Please check the message recipient "xxx.xxxx@sfr.fr" and try again

I did not have this problem before. If I use Greenby's web mail (My email provider ), the messages are sent without any problem. I would very much appreciate some help to solve this problem! P.Y: pemy@pemyoung.plus.com

I have followed the instructions that several people give to transfer my existing Thunderbird installation to a new computer where I have just installed Thunderbird. That is I copied the Thunderbird folder and put it in the Roaming folded found in %appdata%. Both computers are on Windows 11. When I open the new Thunderbird, it does not recognise it. Furthermore, in Help>Troubleshooting information>Profile folder when I click to open the folder, it looks for a folder that is not in my previous Thunderbird installation: qr19mupe.default-release instead of the one that came with my imported Thunderbird folder. Has this happened to anybody and found the solution? Can anybody help please?

I want to create a wireguard file that I can load onto my router to permit me to use mozilla vpn on my router as i will be using it on static devices eg TV which I want to connect through the router. I understand this can be done but the syntax offered does not seem to work on my PC running win 11.

Trying to get stuff done. It's hard when you start a task in one tab ,switch to another tab to start another task, and when I switch back to the first tab, it hadn't completed the task, it actually paused when I left it. What's the point of multiple tabs, when only one is working at a time? I expect it to continue with the task, while I go elsewhere to complete a different task.

Hello, I have Firefox for Android 151.0.4 on a Samsung A50 with Android 9. On the SD card of the device I have several pdf files which can be opened with Adobe Acrobat with no problems. Instead, when I go to the device's file manager, move to that SD card, long-tap on one of those pdf files, tap on the three dots to see more options, choose "Open with" and finally select Firefox, I have that Firefox opens with a "File not found" page and the address bar shows, for instance "content://media/external/file/22098" while the pdf file I tried opening is "/SD Card/Test.pdf".

Is it possible to open local pdf files on my device with Firefox for Android? In the positive case, how can I do it in my case?

Thank you

I have upgraded to TB153.0.3ESR. I've been on the ESR stream for a long time now. But recently, I started having trouble with my google calendar appearing. I've deleted the provider plugin, I've moved to OAuth2, and for the most part, calendars that I have that are read-only from google show up all the time. But my personal read/write google calendar will not show up.

If I go in and delete the cache.sqlite file, and then start Thunderbird, my entries show up. However, if I switch to a different week, my read-only calendars still show up, but my personal calendar goes away.

I've tried everything listed in all of the steps to fix this, but I can't find anything that gives a clue as to what is happening. Anyone else see this?

Steve.

On two different Windows machines, current Firefox (153.0.1), the alt-d shortcut stops working: it does nothing until I restart Firefox. Then it works again for a while. I've tried about:keyboard and it's not reset there. I tried all combinations: Clear, Reset, setting it to alt-d explicitly. None of those worked. But when I set it to alt-a, that worked--but then resetting back to alt-d again didn't work. That shortcut is muscle memory at this point, so it's quite distressing. Not sure what diagnostics might be available to help here, happy to try anything.

Full disclosure: Both machines are Windows 10 but since that's stable, I find it hard to believe that's related.

Hello. I have been unable to send email from one of several POP accounts on Thunderbird (v 115.18.0). I believe this occurred after Network Solutions changed the SMTP server for that email account. I am able to send email from my Gmail IMAP account setup on the same Thunderbird program on my PC. I have tried all the port and authentication settings for SLS/TLS and STARTTLS, changed/updated passwords, etc. I do not get any error messages, just never receive the test email I send to my other accounts. I updated the SMTP server on my iPhone mail app to the new NetSol SMTP and it works on that platform. I just cannot get it to work on Thunderbird on my PC. NetSol support said to delete account and start over which is not possible as it is my business email account. Also, the inbox is too large to back-up to an external drive. Any suggestions? Thanks in advance. John

Bonjour, Je vous promets que je vous fais un don dès que vous aurez mis fin à votre publicité mensongère à propos des Dossier récents : ils ne sont jamais triés par ordre alphabétique, quelque soit le paramétrage demandé.

I have updated my credit card but am still getting e-mail that my payment hasn't been received. I don't want to lose this account. I show that the payment as been received.

Hi, I have 2 Local Folders and an additional Local Folders1 folder. I need tol remove two of them so my Msg Filters work properly. Do I need to edit an additional file inn my Proffile folder? Need some guidance please. Am I not following rules and guidelines? Thanks

Disabled in a nursing home.

I can receive but not send messages, this has been going on for over a month now. I've tried several times to fix this but unable to correct it. The first error message prompted me to check password which I did. It worked for a few days, then it didn't. Checked with my IP to make sure I have the right port number and security settings: Port: 587, SSL/TLS. Started getting other error messages... this one is the latest: The message could not be sent because the connection to Outgoing server (SMTP) smtp.comcast.net was lost in the middle of the transaction. Try Again).

I'm on Macbook Air (Sierra 10.12.6). Using Thunderbird (115.18.0 (64-bit), says it's up to date. I've attached the last two messages and a snap shot of my smpt settings. My brain is fried from trying to figure this. I'm also wondering, if my OS software no longer supports this version. Any help would be greatly appreciated.