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I am attempting to transfer my Thunderbird Profile from and old computer (call it "SOURCE") to a new computer ("TARGET"). I have tried everything prescribed in the documentation. It fails every time.

[1] I tried importing the ".Thunderbird\Profiles\xyz.default: folder from SOURCE to TARGET (Tools -> Import). It starts the import, but soon aborts with the incomprehensible message:

1747152229330 addons.xpi WARN Checking C:\Program Files\Mozilla Thunderbird\distribution\extensions for addons Found 0 public keys and 0 secret keys (0 protected, 0 unprotected) RNPLib.jsm:559:15 1747152229736 addons.xpi WARN Addon with ID thunderbird-compact-light@mozilla.org already installed, older version will be disabled 1747152229736 addons.xpi WARN Addon with ID thunderbird-compact-dark@mozilla.org already installed, older version will be disabled Uncaught NS_ERROR_ILLEGAL_VALUE: Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIWebProgress.addProgressListener] <anonymous> chrome://messenger/content/aboutMessage.js:119 aboutMessage.js:119 1747152289419 Toolkit.Telemetry WARN TelemetryStorage::_scanArchive - have seen this id before: e4a0732e-f511-4cb6-ba38-be42dbd2b48f, overwrite: false Uncaught (in promise) NS_ERROR_FILE_NOT_FOUND: Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [nsIFile.copyTo] _recursivelyCopyMsgFolder resource:///modules/ThunderbirdProfileImporter.jsm:659 _importMailMessages resource:///modules/ThunderbirdProfileImporter.jsm:588 _importServersAndAccounts resource:///modules/ThunderbirdProfileImporter.jsm:248 2 ThunderbirdProfileImporter.jsm:659

I have tried importing over a network, and also after copying the whole Profile from SOURCE to TARGET first, in an intermediate work area.

[2] I can't Zip my Profile, it's 16GB.

[3] I tried manually copying the profile directly from SOURCE to TARGET's "C:\Users\myLoginID\AppData\Roaming\Thunderbird\Profiles\". When I start Thunderbird, it only shows the first few email folders, the rest are missing.

I have used this procedure successfully many years ago between two other computers.

I am desperate, I put my trust in Thunderbird, and now I cannot move forward, my business is in jeopardy. My old computer has started failing, it's on its last legs, and could soon become unusable.

I contribute to Thunderbird every year, and am a strong supporter.

I am trying to set up both firefox and thunderbird on a new very small (12 inch screen) for travel and with a windows custom magnification of 110 for disabilities. The finish set up screen in firefox and the give thunderbird access to your google accounts screen in thunderbird do not appear to be showing the whole screen with no way to get to the bottom to click the critical allow or continue buttons. Those buttons appear to not exist. I am having the same problem trying to sign out of machines replaced several years ago - I can click which ones I want to sign out but it brings up a screen asking why with no continue button so I am stuck. Help!

Hi Forum! My Firefox is constantly (weekly) asking to update, even though we're on the latest version (right now we're on 138.0.1 (64-bit) I've reinstalled Firefox a couple times but the issue still persists. I'm not sure what my next steps would be.

Thank you all in advance, I appreciate your knowledge and time!

When trying to update Thunderbird on Ubuntu 24.04 the installer says "Quit to Update". I have quit Thunderbird and unpinned from task bar, restarted and still the same. I then decided to uninstall and used 'sudo apt remove Thunderbird' which says it was removed, I then used 'sudo apt purge Thunderbird' which comes back with Package 'Thunderbird' is not installed, so not removed. So tried again, Guess what same result! Any Ideas please?

sudo apt purge thunderbird Reading package lists... Done Building dependency tree... Done Reading state information... Done Package 'thunderbird' is not installed, so not removed 0 to upgrade, 0 to newly install, 0 to remove and 3 not to upgrade.

With the progressive rollout of tab groups having ended (I am assuming that because they are available by default in fresh installations), I would expect them to be available when I sync with my Firefox profile. However, when I sign in to the browser to sync all my settings, the option disappears. I am more interested in why the rollout never reached me than being told to enable tab groups in `about:options`. The profile switcher is also not showing up, but I am not sure if that is still in beta.

It seems like every week I've somehow muted the audio in a tab. I think this started a few months ago, but I can't remember seeing any sort of an "upgrade" alerting me to this new functionality. How do I get rid of it?? It's driving me nuts. I search google for a solution, and it's horrible AI search just refers me to an ancient thread that does not work.

Btw, I just saw an announcement by Mozilla about modernizing itself. How about getting rid of the crazy About:Config and making it easier for users to make changes?

I cannot make fire fox work at all.for me. I need the file, edit, history, bookmark tool bar back. I'm pleading with you. Please I BEG you to uninstall the upgrade. Please let me have the Firefox I had last week. I,m 88 and will die before I ever!!!! i can't make anything work.I have over 5,000 bookmarks. I write for a few dollars to partly support myself. Right now I'm out of business. Where is the invisible email address? I have been using FIREFOX since it came out. i can't go through your circus. A browser should have a high degree of instinctive coordination, it shouldn't be similar to experts cryptic calculus level, when your totally unfamiliar with the level of calculus I'm sorry, I won't be able jump through hoops..

I am currently running Thunderbird 137.0.2 (64-bit) and I don't get an automatic prompt for updates and haven't been getting them since I updated to Supernova and now Nebula.

I have the settings set to Check for updates, but let me choose whether to install them, which is the setting I have always had and I used to get automatic prompts for updates with a window opening to show the details of the update as I get in Firefox.

Can someone tell me how to get these automatic updates back.

I have attached a screenshot of the update window.

Thanks.

It's slowly dawning on me that this might be an unfixable problem, but I'll ask anyway.

When I updated my Macbook this morning, Firefox updated as well, and when I opened it, all my bookmarks, history, passwords, and extensions were missing. My Mozilla account was signed out, so I signed in, but since my password was only saved on Firefox, I had to reset it... I think this may have deleted my data permanently.

Weirdly, a similar thing happened to me with a recent previous update where all my bookmarks vanished. I tried to follow the guide to restore bookmarks, which didn't work, but when I quit and restarted Firefox they came back anyway so I didn't think too much about it.

It's definitely my fault for panicking and resetting my account password without reading the consequences too carefully, but I don't understand why these updates sign you out of the browser in the first place. I'm not the most tech savvy person in the world and it wasn't like they were warning before the update to make sure all my data was backed up... they just sprung it on me at 7 on a Saturday morning. Sorry for complaining. If anybody has any idea how to fix this, I'll be eternally grateful.

I had to reinstall Fedora 42 on my Dell XPS 9315. I reinstalled Thunderbird, but it won't open, saying it cannot find my profile. How do I tell the new TB installation where my profile is?

At /home/eric/.var/app/org.mozilla.Thunderbird/.thunderbird,my profiles.ini file looks like this:

[General] StartWithLastProfile=1 Version=2

[Profile1] Name=default IsRelative=1 Path=z663dkmf.default-release Default=1

[Profile0] Name=default-release IsRelative=1 Path=grykcnt2.default-release

[InstallFA9DEAB4CC8E0E14] Default=/home/eric/.var/app/org.mozilla.Thunderbird/.thunderbird/z663dkmf.default-release Locked=1

[Profile2] Name=Default User IsRelative=0 Path=/home/eric/.var/app/org.mozilla.Thunderbird/.thunderbird/z663dkmf.default-release == There's also an installs.ini file:

[FA9DEAB4CC8E0E14] Default=/home/eric/.var/app/org.mozilla.Thunderbird/.thunderbird/z663dkmf.default-release Locked=1