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Ich habe WIN 10 auf meinem PC und kann nicht auf WIN11 upgraden. Hatte Thunderbird schon installiert und problemlos im Betrieb. Leider konnte ich ab ca 19.12.2025 keine Emails mehr schreiben und empfangen. Ich habe mittlerweile zig Stunden versucht das Programm wieder zum Laufen zu bringen, aber erfolglos. Ich habe es 2 mal deinstalliert, aber mittlerweile kann ich es noch nicht einmal wieder richtig installieren (habe alle Thunderbird-Dateien - auch den Cache - auf dem PC gelöscht). In GMX Mail habe ich die Berechtigung Zugriff über POP3 u. IMAP erteilt. Ich kann leider keine jpg Datei mit näherer Beschreibung hinzufügen...

Viele Grüße Gerhard Deist Email: g.deist@gmx.de

You guys keep hijacking my browser and stopping all my work on a near weekly basis. Shutting down my ability to work on projects and stopping my browser from functioning in the middle of use. I can't even pay bills without you guys interrupting my browser with your bullcrap.

This is unacceptable. I've gone through great lengths trying to stop you from hijacking my browser. I installed a policy generator and followed the instructions to put a policy in. I uninstalled Firefox's background updater tool. I disabled automatic updates in the settings to the best of my ability.

I've gone through everything I can think of trying to stop your forced updates. Its unethical what Mozilla is doing to its users. I even tried to lock policies with admin only authorizations but firefox couldn't read the file anymore when I did that. I did confirm today that the policy file was still working, when Firefox ignored it and shut down my browser till I restarted it. I confirmed that Firefox is blatently ignoring policies.

I just checked and Background Maintnence was installed again when I didn't want it. You're now installing software against my will too? What the hell is going on.

I have no idea what I have accomplished and what I have to do next. I am here because I cannot access my current email account,and neither can you. I paid $20 but I still see a pay page. Get Thunderbird installed and working. I had Thunderbird years ago and lost it, I think someone wanted me on the foxinternet.com program. Assume I am a new person to access the internet.

hi again and thanks for listening when windows updated to 11 they removed Mozilla Thunderbird ESR(x86en-us) publisher Mozilla version 140.5.0 it contained alot of data, address book and many emails. Very disappointing. Is there any thing you could do or is it forever lost thanks again geoff

Hello, I am currently using Firefox Beta and I would like to switch to the regular Firefox Release without losing any of my data (browsing history, bookmarks, passwords, add-ons, and settings). I would appreciate guidance on the safest recommended method. Specifically:

Is it safe to install the Release version over Firefox Beta, or could this cause data loss or profile conflicts?

What is the best way to create a full backup of my Firefox profile beforehand?

Should I expect any issues with add-ons after moving from Beta to Release?

Do you recommend enabling Firefox Sync as an additional safeguard, or is a profile backup enough?

In case something goes wrong, what are the recommended recovery steps?

My setup:

Operating System: [windows 10 ]

Thank you for your assistance.

The Internet told be Thunderbird is the best way to Download Linuux Mint Cinnamom. I am 94 years old and cannot figure out how to do that. Can you give me detailed steps I can take to do that?

I am trying to restore my Thunderbird/Mozilla account, and get the following message:

Access Denied You don't have permission to access "http://login.xfinity.com/login" on this server.

Reference #18.4c0f3417.1765301243.f2c2aa1f

https://errors.edgesuite.net/18.4c0f3417.1765301243.f2c2aa1f

Any help would be appreciated, thank you.

I have been having using Thunderbird as my email package for over 10 years and lately have been having issues. I was looking to cleanup the install (version 140.5 esr) and noticed an older version of the app still exist on the computer (version 68.4). will deleting this version have any implications. This computer was originally Windows 10 but has been upgraded to Windows 11 when the problems seemed to start appearing.

I am trying to create my gmail address on Thunderbird ([edited] @gmail.com). But I get an error message: Error message start: Could not create account Incoming server is already created. Error message end. however I cannot find any incoming server mentioned for this email address anywhere in the settings or data. anyone have an idea where to search for and delete that server ? I will be very grateful for any help.

Arne Essa Madsen [edited phone# and email from public community support forum[ [edited] @aem-e.com