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Yesterday I upgraded my PC from Windows 10 to 11. Today I discovered my Local Folders are not visible. Searching tells me the messages still exist, but TB does not show the folders. I did the same upgrade a month ago on a laptop (Windows 10 Pro to 11), no problems. I didn't externally back up the messages as I am a dinosaur and don't know how, but at least they are still on the hard drive. Thousands of them though so I need the local folders back. Tried all the fixes I can find on the Community Forum, without success. Can anyone help please? Bob

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

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

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

I have several email accounts that don't work well for me. Since Firefox has been my primary browser for over twenty years, I turned to Mozilla. I like your company's open source method and people-based philosophy. So I signed up for Thunderbird just now from your website. But I am not all that tech - savvy (I'm a baby boomer who started using personal computers at age 34 in 1984, and internet in 1990.) I'm 76 years old.

Is there someone who could walk me through setting up my new Thunderbird email account, and then moving my emails and address book from my current email server on Rackspace? And also disconnecting Apple Mail as my default outgoing mailbox, and set up my new Thunderbird account in its place?

I'm willing to pay for some help!

Bought a new computer,, loaded Mozilla email added one account which took two hrs to make it in then loaded another account.. the second one came up will all my folders the first one had nothing and does not work I would like to take it out and start all over but dont want to loose the 2nd what can I do to do this. ? Thanks email to answer is [edited from public] @earthlink.net

Thunderbird kept crashing, so I tried reinstalling. When I did, I was told to agree to an upgrade. I did. But now, it can't configure my account, and I've lost everything. Using a Windows 11 PC desktop. Everything was working fine until a couple of days ago when trying to send messages ended up crashing Thunderbird if I used the enter key.