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I am attempting to install Thunderbird on a new laptop and move personal folders from old to new PC. The installation process finds my email address and ISP information but fails with incorrect password.

Steps - 1. enter user name 2. enter email address 3. install finds correct ISP information 4. accept ISP information without changes 5. enter email password 6. process popup say incorrect user name, ISP info or password 7. login to ATT.NET successfully which indicates to me that the userid and password are correct for email account.

what other information could I supply to assist with problem resolution? I do not know what to do next.

Thank you, Neal

How should I fix the frozen browser. Firefox updated ok from another user account on this computer, though Firefox has always updated for all accounts on the computer when updated from any of the accounts. The installer tool got caught in a loop to install until it froze the browser on the third retry. What should I do?

I see duplicate menu items for addons under Tools menu for some addons like ImportExport Tools NG for example and its developer identify the issue as longstanding Thunderbird bug on Mac.

Any idea about the isse?

The attached image shows the error message I get when I try to run Thunderbird. This has been the case for several months, and all of the suggestions I've found online have failed to make any difference at all.

It seems this must be a fairly common error with other software, but within Mozilla's help menus I could find only one thread of two messages that addressed it at all, with no solution offered.

I'm running Windows 11, and have had no problems with Thunderbird until this one.

I hope someone can offer a solution that works for me.

Thanks,

Neil Farrell

text appears wierd.i tried reinstalling,disable hardware accel, troubleshooting mode, and lot more. nothing solved this problem. i also have dev edition, but it works PERFECTLY FINE. website texts appear normal,but firefox texts dont. atleast english is readable, different languages(korean,japanese)appear as bunch of boxes and russian, and arabic.

Anyone know if the Firefox app will be in the Microsoft Store soon for download?

I bought a new computer and if I download the app from the website I will permanently be taken out of S mode (I’m sure you guys are aware of this issue).

Im hoping the app will be available through the Microsoft Store very soon because I only use the Firefox browser on all of my other devices.

Is there a way around it other than permanently switching out of S mode and downloading? I’m aware I can do that but prefer not to.

Thank you!

I just installed Thunderbird on a second computer and I'm having serious issues with my email. The install recognized me without having to log in with my password. However almost all the emails are missing with the exception of one folder called Trash. There is nothing in the inbox and no sub-folders are showing. I logged out and then reopened Thunderbird and again it opened without asking for my password. It's very strange and alarming quite frankly. Everything worked quite well on the first computer so what gives with fiasco? Unless somebody comes up with a solid answer and fixes this, it will be the last time I use Thunderbird. Patrick

I have a new laptop and did a backup of my files on the older laptop (Windows Home) and restored them to the new laptop (Windows Pro). Then I installed Thunderbird on the new laptop and I already had e-mails on it. But there are thousands of e-mails in the wrong folders.

The Windows Home has Thunderbird 128.10.oesr (32 bit) and the Windows Pro laptop has Thunderbird 128.9.2esr (64 bit). What should I do? Should I uninstall Thunderbird on the new laptop? Then what?

I need to do something with a profile folder, right? But what?

Please help.

It's a mess right now.

Hello I'm using TB 128 esr / flatpak on Ubuntu 25.04. I'm satisfied, but I want to install Thunderbird in parallel before switching to this version. https://support.mozilla.org/fr/kb/installer-thunderbird-sous-linux#w_changing-channels I read and managed to install TB "monthly beta" by extracting the tar file. It wasn't possible to retrieve the profile via the zip file because it's 2.4 GB. It seems to work, even though it uses quite a bit of CPU power, ~20%!

1/ Anyway, my main interest would be to have a usage similar to Firefox standalone, which I can use from my computer to my laptop :-) with the same profile stored on an SSD data drive. I don't want to install the profile on my computer or laptop system drives!

2/ How do I launch this version at startup?

REgards

I recently changed from Windows 10 to Zorin for reasons, I guess, everybody knows. I am finding difficult to put Thunderbird on the desktop. What am I doing wrong? Can someone help? KG Zorin

Just installed Thunderbird on a new computer. I'm a long-time user, supporter, donator to the team. I just donated again. Now I get an "in your face attempt for donations" that I don't appreciate. It has to be removed every time I load mail. How do I get rid of this?

This will be a long question and in 2 parts, so I'll apologize up front.

1. I am running FireFox on my 11-year old MacBook and love it (MacOS Mojave version 10.14.6). However, my printer just crapped out, and my new HP 9120e requires MacOS Big Sur (11.x.x) or later. If I update to that OS, will I still be able to use FireFox? If so, where do I find it (see Question 2, below)?

2. Since my old MacBook is clearly reaching the end of it's life and my Excel and Word apps are also ancient, I am trying to transfer all my stuff onto a "New" MacBook that is running MacOS Monterey version 12.0.1. However, the "New" computer (I will not say "improved") has been a reliability nightmare and I just had it in for service. They wiped my disk clean to install the Monterey OS. So, other than Safari, I have no browser (or anything else for that matter). When I go to the App Store to download FireFox, and don't see it anywhere. Help!

Hello,

I have old 15 year old mac el capitan -10.11.r with outdated firefox 78.15.0esr 64-bit.... in perfect condition. Unfortunately I can not make updates on browser anymore. Online banking websites does not allow me to use this outdated browser. Would you be so kind to make even paid update for me? Or at least let me know what settings I should change under about:config

Waiting to hear from you! [edited email from public]