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I am supposed to be on the esr release program, but today I was automatically updated to beta release 133.0. This is the second time this happened. Thunderbird shows a red screen, and recommends I install the last stable release, 128.5.0esr, which is what I want to do. But the last time, when I tried to go back to a stable release, it then wouldn't let me do that because it says the profile may no longer be compatible. I solved it painfully using timemachine backups of older profiles.

What is the simplest, safest way to downgrade, now that I am in this situation? And why is this happening?

Thanks for your help!

Hallo, I have installed the "Thunderbird " app on my smartphone as I already have this programme on my PC. Now I want to export the dat, but I get a message described above

"Bestätigung der Identität" - Überschrift "Windows Sicherheit" mit Eingabe von Benutzername und Kennwort Confirmation of identity- heading windows Security by entering user name and password.

I don´t know the password. Can`t I change the password?

I have now entered all possible variations of passwords, but nothing fits. I have signed in to Microsoft, can still access my account, but no longer use it. This password is not accepted either. So I can`t create the QR code.

Can you help me? Anne Buchholz from germany.

Macbook med Sonoma 14.5. Firefox got stucked, probably because of to many tabs open. It shows at the bottom list, but not visible when trying to click on the icon, or pressing "command +tab". Tried to reinstall, but the system telling one Firefox is already open.

I had the option of Chinese -TW language installed in previous versions of TB. Previously the Main menu usually displayed in English. However, after updating to current 128.5.2 esr, the menu labels change to Chinese. I'd like to have the menu displayed in English again. Thank you.

I can not use firefox. However, when I try to uninstall it and then re-install, I get stopped at the uninstall step. An alert message says it can not find .... point

i am using the Windows 10 PC version of Firefox, with updates set to automatic.

i've been having a consistent issue where themes won't be maintained between restarts of the application. If i set it to any theme, close the browser, and reopen it, it will show the chosen theme for about a second, and then revert to a strange non-existent theme that is a slate gray background with white text and no color accents. It will still show the selected theme as being active in the themes menu, and disabling and re-selecting the theme i want will make it reappear again.

i've been ignoring this issue thus far as it's just a cosmetic issue and i didn't care enough to go digging for a solution. However, with the 133.0.3 update yesterday, the default theme is getting messed up as well. It seems like it's mixing up the light and dark themes, as it has the grey/black background, but all the secondary text is displaying in black, meaning i can't see the text in the application menu, address bar, or bookmarks bar folders.

This issue is occurring with Mozilla themes, Marketplace themes, and custom Color themes. Does anyone know of a fix for this issue, or at the very least a fix for the black text?

Last Friday I took up the firefox update. I always wait 3 days b4 I do in case there are any bugs. Lost everything on desktop and there was a msg " This update is not compatible with yr computer, please re-instal firefox" but it was a catch 22 situation cos every time I tried to re-install firefox I got nothing but the same message! I had version 133.0 (64 BIT) and the newer version was & still is 133.0.3. Eventually Edge came to my rescue and took me back to the older version (133.0). Then a couple of days later I'm getting incessant offers to update! I checked the Firefox updater & the new update is the same as the one that caused my desktop computer to crash so keep dismissing it unless u can promise me it wont happen again! My son is an IT specialist; he had to drive 100 miles to come help me get back everythng I lost. I dont like the newer update .. not interested in side bars; just want it to be the same all the time! So question is: if I take up the newer update, is it still incompatible with my comp? Am running W10 on it.

I did see the question here: https://support.mozilla.org/en-US/questions/1448269

And the answer is not useful, mainly because apt-get does not use a browser to update its cache.

Err:16 https://packages.mozilla.org/apt mozilla/main all Packages

 400  Bad Request [IP: 34.160.78.70]

E: Failed to fetch https://packages.mozilla.org/apt/dists/mozilla/main/binary-all/Packages 400 Bad Request [IP: 34.160.78.70 443] E: Some index files failed to download. They have been ignored, or old ones used instead.

Using curl/wget/httpie works as intended, just apt-get update fails.

Any help would be appreciated.

Hi,

I have a laptop with an AMD Ryzen 7 8845HS CPU, including a Radeon 780M iGPU, running Ubuntu 24.04. In order to fully utilize the GPU by supporting OpenCL acceleration I installed the additional drivers by: `sudo amdgpu-install --usecase=graphics,multimedia,opencl --opencl=rocr --opengl=mesa`

After that programs which benefit from OpenCL acceleration recognize the GPU, however firefox starts crashing with the following error msg:

XPCOMGlueLoad error for file /usr/lib/firefox/libmozgtk.so: libwayland-client.so.0: failed to map segment from shared object Couldn't load XPCOM.

It seems that the AMD GPU drivers registered their libraries in `/etc/ld.so.conf.d` as 10-rocm-opencl.conf, 20-amdgpu.conf which means that libraries within the given folders are found first.

This applies to the libwayland-client library, which is used by `/usr/lib/firefox/libmozgtk.s`:

ldd /usr/lib/firefox/libmozgtk.so | grep amd libwayland-client.so.0 => /opt/amdgpu/lib/x86_64-linux-gnu/libwayland-client.so.0 (0x00007013767bf000)

Interestingly the same `libmozgtk.so` library is used by thunderbird:

ldd /usr/lib/thunderbird/libmozgtk.so | rg -i amd libwayland-client.so.0 => /opt/amdgpu/lib/x86_64-linux-gnu/libwayland-client.so.0 (0x00007d44b0f41000)

However thunderbird just works fine, so I expect that there might be something wrong with firefox utilizing this library.

Maybe I should also mention, that I'm not even using wayland as desktop compositor, but good old x11:

echo $XDG_SESSION_TYPE x11

Is there any way to further debug this issue?

I am running 16.04 ubuntu, firefox 88 and am getting warnings from some apps this version is too old. Want to upgrade. Proceeds sort of ok but new icon does not appear and old version persists. Is newer firefox impossible to install successfully on 16.04

Ok. I'm visually impaired. until version 90, I think, Firefox was great. Then it got so bad that I tried other browsers, but finding anything with support for the visually impaired is impossible now - we just don't count, that's obvious.

The newest version, what is it? 84357348957? Is impossible. I don't know why the lines between tabs were removed. I assume the developers thought it looked cool, without thinking that SOME OF US DON'T SEE WELL. I can barely use it now. I need to get back to an earlier, at least slightly usable version without losing everything - and I need some way to not be bothered with a popup for update 954785 this week.

Yes, I sound angry. I know that's not cool with tech. But you know? There is no need for 10-20 updates a month. And there's no bloody excuse for the complete disregard for the visually impaired that is now Mozilla's trademark.

Any help would be appreciated.

This has been a problem for me for a very long time, and I'm tired of having to use chrome every time there's an update to firefox.

The issue I have is that I will get the notification saying there's an update. I click the button to update now, the browser opens the auto download page and I get a not secure connection warning. The only work around I've found is to use chrome, and sometimes I can use the "other downloads".

I'm not running a VPN, or any other networking software on my pc. This is for the full program, not the windows store app.

Secure Connection Failed

An error occurred during a connection to download.mozilla.org. The server uses key pinning (HPKP) but no trusted certificate chain could be constructed that matches the pinset. Key pinning violations cannot be overridden.

Error code: MOZILLA_PKIX_ERROR_KEY_PINNING_FAILURE

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.