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I have a custom pitch black theme ( pls add it without addons ) which now only flashes for a second when i open the browser and returns to the normal greyish dark mode. When i go to Firefox Color addon page and load it again in saved themes it stays pitchblack even if i open another browser window until i close all the browser windows .

It seems from reading on forums and googling that there is a "return receipt" function in Thunderbird. My problem is I can't find it anywhere in my software. I've searched in every category and can't even find an "Options" on the menu. I remember when Thunderbird did have a "return receipt" that was very easy to find. Now it seems that it has disappeared altogether. What gives?

Hej. Jeg har Thunderbird på en anden pc med den samme kontooprettelse/indstilling som jeg har brugt på en ny pc. Den siger indstillingerne til server er fundet og jeg siger fortsæt. Efter lidt tid kommer en besked - brugernavn eller kode er forkert. Jeg har tjekket flere gange og alt står korrekt men stadin fejl om forkert brugernavn eller kode. Bruger windows 11 home alt er opdateret Bruger Avast

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Currently on 131.0.3. Started having this issue around the time 131 dropped.

I press Ctrl-shift-O and bookmarks manager won't open. Bookmarks manager opens normally if I use the menu to open it. Keybind won't work in troubleshooting mode so I know it's not an addon, and the hotkey works fine on other computers with Sync enabled so I know it doesn't have to do with my synchronized settings. Also won't open with a fresh profile so I am very hesitant to reset all my settings.

I use this keybind multiple times per browsing session so it has had a major impact on my usage. Not sure what to do. Please help!

I'm going to try a graphics driver update in the hope that helps. This is on Windows btw.

I didn't know there was a non-ESR version of Thunderbird until I found out by chance a few days ago! Since the latest update to ESR 128.5.2 has crashed 11 times this week, I would like to move to the latest version (64 bit?) non-ESR. There must surely be an official Mozilla step-by-step guide to doing this?

Dear Sir or Madam,

I need your help.

My Thunderbird shortcut no longer opens. The shortcut C:/Online/Thunderbird is empty. The folder no longer exists and my Thunderbird can no longer be found after an update on November 1.

I can still find Thunderbird version 128.4.0 260MB from 1.11.24 and my old profile from 7.11. under Windows Programe.

What can I do to get my Thunderbird back? Reinstall Thunderbird and integrate the profile?

I haven't actively deleted the program and can't remember updating it.

I was just able to save the profile to a USB stick.

Many thanks in advance for your efforts

German Kann die Verknüpfung von Thunderbird nicht mehr öffnen. Diese ist nicht mehr auffindbar.. Mein Thunderbird ist wohl nach einem Update am 1.11. nicht mehr auffindbar. Finde unter Programe Thunderbird Version 128.4.0 260MB vom 1.11.24 und mein alten Profil vom 7.11. noch. Was kann ich tun um mein Thunderbird wieder zu erhalten? Neu installieren und das Profil einbinden? Habe aktiv das das Programm nicht gelöscht und kann mich an ein Update auch nicht erinnern.. Konnte das Profil gerade auf einen USB-Stick sichern

I am trying to upgrade from ESR to Release. I saved my profile successfully, went to the install page and clicked Download. Got a request to donate, which I did. Then I got a page saying Thank you, Finish installing and enjoy Thunderbird. But there is no way to finish installing and I never got a download file. I've tried multiple times, nothing happens. Help!

Been using TB for about 10 years. My last upgrade was to ver 52.9.0. in 2018. Since, I have clicked the upgrade button a few times. I do not know what ver I was running before my accidental upgrade to 115.16.2 a couple days ago. This ver is terrible. I want to go back to my previous ver, but not sure what it was.

So a month ago I did a win 10 backup to my external drive. Not sure how to just restore TB on win 10 backup. Also, I weekly copy my profile to a thumb drive.

1. Where is that ver number located in the copied profile so I know what ver I was running? And if I find it can I just uninstall TB and all files/profile and reinstall that version; then import my copied profile without losing 10 years of mail?

I have loved FF desktop browser since I started using it per my boss in 2003. But I am so tired of the fact that EVERY SINGLE TIME you put out an update it breaks my access to the bank. EVERY SINGLE TIME. I waste HOURS reading articles, calling the bank IT dept, chatting with people who are on 3 calls at once, only to hear them tell me to "just use chrome." I clear the cookies, clear the cache, reboot, follow all the prompts in the settings and THEN the damned bank server doesn't recognize the device so it forces yet ANOTHER password change. It happened again TODAY and it makes me so sad but I cannot do it anymore. I am STILL now (going on 4 hours) trying to access the billpay page @ Xantanderbank. (ahem, secure codename) I am forced now, by this craziness, to use the imbecilic duckduckgo which is A) and offensive name and b) you KNOW it nowhere near the product you have built but I CANNOT DO THIS ANYMORE. Thank you for the time it takes to read this diatribe. I appreciate it.

Thunderbird just auto updated and will not open. Crash report opens as the program crashes. I didnt realize it had updated until checking files. Do I need to reinstall revert back to the old ver. Please advise. Thanks

Hello, I have a new installation of Thunderbird (128.2.2esr (64-bit)) and am unable to discover how to set it to spell check in French. I've installed Grammalecte as suggested and then restarted the programme. However the only language option is English US.

Can you help please.

Thanks for having me . I am struggling with backing up my TB on my laptop. When i set it up i was told that the way i set it up it would need backing up regularly as it is based on my computer hard drive. I followed a youtube guide to back up but i keep getting this message: "this action cannot be completed because the file is open in thunderbird- close file and try again parent.lock "

and cannot get passed it.

Any guidance would be gratefully received. ( or another method of backing up that a simple person could follow) TIA Cheers

On the latest update to firefox, the browser now has a vetical tab in addition to the horizontal ones. I want to remove the vertical tabs, and ideally for it to never come back. I've searched the settings as well as the support features and can't find a way to turn it off. I am legitimately not going to use firefox at all until this issue is resolved.

Thanks

Hello !

I'm having an issue loading my Thunderbird profile and looking for help. I copied my profile from C:\Users\phili\AppData\Roaming\Thunderbird\Profiles to D:\Thunderbird\Profiles I updated the profiles.ini located in C:\Users\phili\AppData\Roaming\Thunderbird but it didn't work. When I launched Thunderbird, it asked to create a new profile and erased my updates in the profiles.ini

My Thunderbird install is located here : D:\Program Files\Mozilla Thunderbird\thunderbird.exe I'm running 128.5.2esr

I've tried moving back the aiedx66w.default-release to C:\Users\phili\AppData\Roaming\Thunderbird\Profiles but to no avail.

Can someone help me ?

Thanks Philippe

Hi,

I seem to be having a really odd issue where each time I restart Firefox, recent addons I've installed will not function or appear in the Add-On drop down menu (despite being meant to appear in such), despite being enabled and still being shown as such when I check settings. They only become visible and functional when I disable and re-enable them.

I've just discovered the same thing seems to happen in reverse too. I recently disabled ClearURLs due to a bug it was causing in Google Drive, yet it appeared in my Add-On drop down menu after restarting. Checking settings showed it to still be 'disabled'.

Things I've tried:

• Restarting both Firefox and PC.
• Uninstalling and reinstalling the effected Add-ons
• Deleting my extension*, compatability.ini and prefs.js files - erasing all my add-on settings yet still not helping. This is the main thing I've suggested on forums like this with similar questions, but has not helped.

It seems to only be effecting the most recent set of add-ons I installed over the last week, as if Firefox keeps trying to work with the Add-on settings I had at a previous date. I've seemingly had some cases where the extensions disable or are uninstalled entirely but I'm not sure this is related, as I think it only happened once.

I suspect it's not to do with the new extensions themselves, given it's effecting all the most recent ones, but I'll list the ones I've seen it effecting here regardless:

ClearURLS (not recently installed, but as mentioned showing similar reverse effects) Undo Close Tab YouTube NonStop Privacy Badger History AutoDelete Don't Accept Image/Webp Decentraleyes Xkit Rewritten Disconnect AI Grammar Checker & Paraphraser - LanguageTool &udm=14

As you can see I recently installed quite a few anti-tracker type extensions which probably overlap in function, mainly just to test them out, so it could be connected to them I guess... but seems unlikely.

Thanks, Matt

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 updated from TB 115 to 116. I had to re-enter email and calendar (to Google) connection info. Calendar does not display. Email and Contacts seem alright. Is Provider still needed?

I recently changed onto the new release channel by installing version 136. I now find that this new release channel appears to have installed version 138, but it is reported as a beta version. I do not want to use beta versions, as I am having a lot of problems with it, so how can I return to a stable release?