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I would like to delete Thunderbird completely from my accout and then re-install fresh. However none of the answers I have found tell me where to start to delete it from my profile.

The online info is inaccurate as it pre-supposes a certain knowledge as to what is to be found where. I cannot follow that.

Hello, I have been having connectivity issues for weeks now. I've asked for help here several times. Thunderbird still appears to have been corrupted.

• Bulleted list item Incoming emails repeat (download ) multiple times
• Bulleted list item Deleted message RELOAD to inbox multiple times
• Bulleted list item Multiple folders created ( not by me)
• Bulleted list item Tested in Safe mode multiple times - same issues.
• Bulleted list item Today I attempted to send
• Bulleted list item a message = got multiple mail.ihot.com time outs and no longer receiving incoming messages as well.

I worked with ihot help yesterday and things were cleared - by matching their password with Thunderbird's new one, which appeared to fix the issue. Four days of emails appeared right after I did that.

Now today I discover I can't sent emails and the incoming is again broken.

When trying to reload TB, I always get the following message ( c- image) 137.01-2 corrupt image So I took my iMac to a repair shop and they ALSO got the same error message.

SO, HOW can I replace the existing corrupted file? I have urgent messages I need to receive and send. Please help. My Public IPv4:23.93.49.41 as of 12:30pm 4/5/25 Imac Settings image attached.

Hello Mozilla I have Windows 10 pro My last update of Thunderbird resulted in bad function, the former Installation worked not really fine. As I found out Windows showed me two Instances of thunderbird , the new one and an older 115.18.0 I tried to deinstall the old instance of thunderbird usind standard deinstall. This left me with some of the old thunderbird still in the sytem which I cannot deinstall. How can I get rid of these remainders to have a clean fresh installation of thunderbird?

Best Regards Wolfgang

Hello,

I failed to install Thunderbird 147.0.dmg on my Mac operating under High Sierrra version 10.13.6. I am getting an error message that the file is damaged when I try to execute it.

I am interested to switch to Thunderbird as an alternative to Mail. Would anybody has a solution ? Which older version of Thunderbird would work with my OS ?

Thanks in advance for your help.

Hello. I want to download Your new version of Android Firefox? Why i must use site like apkmirror.com ? Why you have so big problem to use any FTP or any site on Your servers to take this packeges. Im saying about full version of public? Why topic about this from 2015 is close and thes links dont works? Please send me good link to one site and will be nice like dont delete it in future like last topic about it! Please help I dont use google gulag store! Thanks best

I am trying to install Thunderbird on a computer with windows 10 pro but install gives a message cannot install require a minimum of windows 10 but I do have that. what can I do please. Regards Neil.

I use Thunderbird on two user IDs on the same Mac, which is running macOS 15.3.1.

I usually run Thunderbird updates on user 1, but this time I ran the it (to 128.7.0esr) on account 2, and I can no longer launch it on user 2. (Note: Neither user is an admin account.)

Steps: 1. On user 2, launch Thunderbird. 2. Get the dialog that there's an update to 128.7.0esr. 3. Click the Restart to update button. 4. Get the dialog that there's an update to 128.7.0esr. 5. Click the Restart to update button. 6. Get the dialog to enter admin ID and password for installing the Thunderbird helper. 7. Enter the admin ID and password and click OK. 8. Get a (surprise) dialog to authorize Thunderbird to discover my devices. 9. I choose to deny.

Expected result: Thunderbird relaunches, now with 128.7.0esr. Actual result: Get the dialog to enter admin ID and password for installing the Thunderbird helper.

10. Log off user 2 and log on to user 1. 11. Download 128.7.0esr from the Mozilla website. 12. Check the hash. 13. Install, choosing to replace the old Thunderbird in the shared Applications folder. 14. System Settings, About, System report, Applications 15. Verify the signature is signed by Mozilla 16. Launch Thunderbird

Expected and actual result: Thunderbird launches and I can use it normally.

17. Log out of user 1 and log into user 2. 18. Launch Thunderbird

Expected result: Thunderbird launches and I can use it normally. Actual result: Get the dialog to enter admin ID and password for installing the Thunderbird helper.

I'm guessing there's some manner of residual file that's preventing Thunderbird from launching on user 2. I've verified Thunderbird is in the system's Application folder and not in user 1's files.

How do I clear the pending install from user 2 so that Thunderbird will launch for user 2?

I have downoloaed Firefox offline installer (a .xz file) from here:

https://download-installer.cdn.mozilla.net/pub/firefox/releases/139.0b9/linux-x86_64/en-GB/

I have also downloaded a .asc file, presumably a pgp signature.

Now both files are saved locally in my computer.

Assuming Linux latest release, how do I verify the contents of the offline installer file (.xz) from the Linux Terminal? I have install gpg tools. And commands like ```gpg``` are available.

What I did so far:

 gpg --show-keys --with-fingerprint firefox-139.0b9.tar.xz.asc

with this output:

 gpg: no valid OpenPGP data found.

Do you really want us to verify the contents of the installers you provide? A sha256 sum would be great, though not as secure, for when the GPG predictably fails for the ordinary user due to its huge and useless complexity and bureaucracy.

I want to uses in firebox app as desktop www.badshafareja.com bold text

I normally use Fedora but my Fedora machine died yesterday. For a time being I want to use Thunderbird on my Mac.

I have a backup of my thunderbird profile directory from Fedora 42. This corresponds to thunderbird-128.8.0. On the other hand, the current version on the mac is thunderbird-138.0.2.

1. Since the version number is higher on the mac I think I will be able to use the old 128.8.0 profile with the new mac version ?

2. If I do this, I will not be able to transfer my profile back to Fedora when I get it working again (because the version number there is lower) ?

3. Is there a way from me to install thunderbird-128.8.0 on the Mac so that I will be able to transfer my profile back to Fedora ?

I've tried disabling it with the secret menu and it makes no difference. Seeing as Mozilla don't give a singular toss about the needs of their neurodivergent users I want to install an old version of firefox for android with a version of the UI that doesn't make me want to self harm. I know how to disable android updates but not install an old version safely. How do I do this?

Attached a screenshot of the new UI. As an aside if anyone can recommend the drugs that the people who designed and approved this ugly tosh are on I'd love to know what they are, must be good stuff for them all to make decisions this asinine.

[Note: I characterized this question as an "Installation and updates" issue (even though it is not per se about initial installation or updates) because moving a profile involves installation issues.]

Recently I moved my TB profile, for the second time in the past few months. This time I paid closer attention, and noted several things of interest (that may touch on some questions that remain undiagnosed in this forum):

1. TB took longer to start up, as it could find none of the folders cached in folderCache.json, so rebuilt the cache from the new profile location before starting. (I only learned about this from the next effect.)
2. The "Move to" "Recent" folders list was empty; this cached list only gets rebuilt from use (that is, from moving messages manually (not via filter) to destination folders). This effect led me to folderCache.json- and also may suggest why the OP in that question could not get resolution of his problem.
3. The newly cached folderCache.json was 528 KB, compared to 365 KB at the old location -- and that, in turn, was 170 KB larger than the 195 KB size of folderCache.json at the original location. So each time the cache is rebuilt it grows perhaps 150~200 KB (size depending on the many-times-repeated path length).

What causes the file growth? Because each time it is rebuilt, TB checks through all of the cached folder paths, apparently guided by the mailboxes listed in folderTree.json (see image below). [I think TB just checks each path to see whether it is compatible with the current profile location. If yes, the path is cached for runtime; if no, the path is repopulated from the current profile location (which takes most of the startup time).] But TB never deletes the no-longer-valid paths; it just appends to what was already in the file, so that the list of cached folder paths just grows (thereby increasing TB's startup time, every time). The best way to get rid of the old stuff is just to delete folderCache.json and let it rebuild on the next startup, to reduce the time needed for subsequent starts.

Finally, my questions: In addition to folderCache.json (different timestamp in each profile, of course), there are four files which are the same in all profiles: folderCache-x.json, x={1,2,3,4} (see screenshot). These are apparently from actions prior to the profile relocations, as they are simply copied from one profile to the next, unrelated to changes in folderCache.json. Can someone tell me:

1. What actions cause the creation of folderCache-x.json files?
2. Why folderCache.json merely appends new folder paths without deleting the old ones?
3. Why folder paths are specified explicitly (fully qualified) rather than relative to the profile path?

Thanks for any pointers.

I am getting stopped, dead cold, every time I try to install Thunderbird mail on Linux Mint 22. I've attached a generic article that explains how Akamai's site security services bots are working to protect a site or sites that TB must access to complete it's installation task. In my case it's Comcast/Xfinity. Accordingly, TB installations will not complete and new users are locked out...some for months. The concensus of the devs that have been working on this critical issue is that there is nothing on a new TB user's side that in any way causes or contributes to the issue. I would very much appreciate any information you can provide about a speedy resolution in the works.

Note: The error notification screen "Access Denied" is the same message I get, but with Xfinity referenced.

Thanks. Wiley Oregon, USA

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I'm trying to install Thunderbird on a Macbook - macOS Tahoe 26.2 I've made a donation but Thunderbird won't download.

I did not get any error messages, in fact nothing happened.

I went into Thunderbird on my new PC, donated a few rand and went to "Install Thunderbird on Windows" - I get a Red circle with a red line through the middle with a comment "This content is blocked. Contact the site owner to fix this issue" What do I do now? Please help?

When attempting install firefox on linux using the recommended install method (in order to use 1password fully i cannot install it via snap) the priority does not change from 500 to 1000 using the parameters described in the install guide. Here is an image showing my issue.

Hello all!

I've started having an issue in the last few days, with apparently two separate Firefox installs. A few days ago I was greeted by a fresh, blank install of Firefox and had to set everything up and sign in as I usually would on a fresh system install. Today, however, I somehow managed to launch both of them at once (I don't know how, as I just use the UI shortcut). After closing both fully, I can now only start the "old" one via the shortcut.

OS: Bluefin / Fedora 42.20, Gnome 48.6

According to the list of flatpaks, only one is installed. Unfortunately that's roughly where my knowledge of Linux ends, so I can't troubleshoot this further. Help will be apprecciated, as I don't want to roll a die on which of these will start up every time I reboot.