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It is really sad that there is no way to contact mozilla directly The update installed on my Windows 7 64 bit is now storing cookies for Proton Mail and that makes the storage amt increase from 29Kb to 78Kb and I am not happy that I can not find a way to remove or revert the update so detail steps to complete that process would be nice. As for my future use of Firefox and involvement with Mozilla I am very seriously considering NO further use of both and your claims are starting to become lies you are permitting tracking in my view of this behavior Community Members should not be dealing with these concerns GET OFF your lazy back side Mozilla

Firefox created a folder "Old Firefox data" on my desktop which is impossible to delete. I am getting an error "Access denied" even when trying to delete it as administrator. How can I delete this folder?

Hi! I´m using Jdownloader2. After an update of Firefox the captcha-extension of JDownloader didn´t work anymore. I reinstalled Firefox, but adding the extension is still prevented. Following quote appears: "Firefox hat die Website daran gehindert, Sie zu fragen, ob Software installiert werden soll" It should be in yellow (but it isn´t), like following site describes: https://support.mozilla.org/de/kb/Add-ons-koennen-nicht-installiert-werden#w_firefox-hat-die-website-daran-gehindert-sie-zu-fragen-ob-software-installiert-werden-soll Furthermore there should be a button to authorize the installation. Instead there is only the button "OK". I followed the help-site mentioned above to the letter, to no avail. By the way, I´m using Nightly now, but JDownloader2 automatically wants access to Firefox. Would you please tell me, how to add the mentioned extension. Without it I couldn´t download most files! Please answer to following email: [redacted email from community support forum]

Best regards, Stefan P. aka perechon

I had 59.0b1 running, but Attachment Extractor & Walnut Add-ons not supported. So per help suggestion to my earlier question & "http://kb.mozillazine.org/Go_back_to_an_old_version_of_Firefox", downloaded 52.6.0. Exited TBird, deleted my old profile in %APPDATA%. Copied old xxx.default profile over an earlier copy for insurance - some error messages "same filename". Installed new TBird version.

Walnut now works - great! Attachment Extractor still not supported..

Now all the hundred or so emails in my Inbox are gone, just downloaded a few new ones. Address books are gone.

Any suggestions?

This is annoying, and I suspect may be interfering with my sending of email from my Shaw.ca account (though not from Gmail). Can you please help? Thanks

Ciao, ho ricevuto e scaricato ed installato il link nel mio caso win 64 come suggerito, purtroppo non è avvenuta nessuna modifica ,forse per la mia poca pratica mancano altri passaggi da seguire a me sconosciuti, attendo fiducioso riscontro a riguardo grazie cordiali saluti. Renato P.S. Per cortesia rispondimi qui: [redacted email from public]

I downloaded Thunderbird into a new computer and there are a lot less emails than on the old computer. I cannot find a setting to download the rest of the emails. Can you please help. Please send me an email telling me if I can download the rest of them.

the original error was posted 2015 I had the same quite some times no in 2025/2026

"My Firefox is opening in Administrator mode, which prompts me to agree to allow Firefox to make changes to my PC every time I open it up. I read that I needed to go to Properties and deselect all my compatibility settings but this doesn't work. Any suggestions would be greatly appreciated?"

When I exported my Address Books from Thunderbird on my Windows 10 (64 bit) computer it saved them as a Home.ics file but there is no option to Import and .ics file on Thunderbird 128.4.2esr (64 bit) on my new Windows 11 computer. How do I Import my Address Books with an .ics file?

Hey folks, I recently started the process of migrating my accounts from POP to IMAP. I have several accounts set up on Thunderbird which have been getting mail via POP for years. The idea is to migrate all these accounts to IMAP and I've started the process on one of the smaller accounts, but have already ran into issues with server time outs due to the quantity of mails I'm trying to copy over.

I set up both the POP and IMAP account for the same address on Thunderbird and manually set up the folders (or labels on GMAIL) on the IMAP account to replicate the set up of the pop account. Setting the folder structure manually is not a problem, the problem I've run into however, is that when copying any large amount of mails from the POP account to the IMAP account, it just doesn't seem reliable.

The progress displays in the status bar, but on transferring a folder with about 2,000 emails, it seemed to time out and not transfer everything over. I then had to go through a long process of comparing emails in each folder to know what was left to transfer.

I'm yet to transfer much larger accounts, some with tens of thousands of emails and I need to be sure everything gets transferred properly.

Can anyone suggest a tool or add on or method that even if the server times out, that it can just continue where it left off and I can be sure that all the mails will transfer eventually? I understand the upload process can be slow and I don't mind having to wait or doing it overnight, just as long as it's done right and I'm not left having to compare thousands of accounts, folders and mails.

Any help would be greatly appreciated!

Good morning, I had asked a question early on Saturday, but was unavailable the rest of the weekend so just now responding to associate Corey Bryan's answer. I had gotten a message that I am using an unsupported version and they recommend downloading the latest stable version.

He said it appears that I'm on the "Release" channel and most likely want to be on the ESR channel. I also mentioned that I am a cave-man when it comes to anything computer and am very skittish about making any changes as I don't how to straighten out any errors that might occur.

He asked me where I installed Thunderbird from and the answer is that I don't know. It was an IT guy that did it many years ago.

So I guess my questions are, if I've been using this version for years, do I need to or should I update it? If so, if I click on the latest stable version of Thunderbird, will that change anything on my computer, aside from getting the newer version of T-Bird? And will my e-mails in Thunderbird look any different?

Thanks very much for the help. Tony

I'm using OS X Yosemite 10.10.5 , Firefox 60.0.2 (64-bit) , Thunderbird 52.6.0 (64-bit) From the system menu, both Thunderbird|About Thunderbird and Firefox|About Firefox show the current release number and a link to the current "Release notes"/"What's new" for that release. If a new release is available, there is also a link to download/install the update. I'd like to read the release notes for that update before installing it.

I did search support.mozilla.org for "52.8" (the release of Thunderbird that I do not have) but the Release notes did not appear.

Would it be possible for the "About ..." dialog to include a link to the Release Notes for the new release ?

TIA, Kind Regards Andrew