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Today when I logged onto my MacBook I found that my Thunderbird desktop application is corrupt. When I attempt to open it states "You can’t open the application “Thunderbird” because it may be damaged or incomplete." Screen shots included.

I last used TB with no issues on Oct 27th.

I have over 20 years of TB emails that I do not want to loose.

I have backed up my profiles folders (there are 3) from >Go>Library>Thunderbird>Profiles

My first question is that I thought there were multiple locations of profiles. One for local. But I can only find the above profile.

My second question is how to I go about re-installing? Should I remove the corrupt application first and and then reinstall? What steps should I take?

Thank you!

Hi, Which version should I install on my smart TV please? I got in a muddle and I think I had android on my windows and vice versa. I`m going for the android unless someone tells me diggerent. Thanks very much.

I am a very long term Thunderbird user with gigabytes of historical emails w/attachments currently running esr 115 on my primary Windows 11 (upgraded from Windows 7 to Windows 10 to Windows 11) workstation. I need to migrate to a newer host which also runs Windows 11, so I installed release 144 over the weekend to get prepared for the migration. I know that the basic rule is that the From and To Thunderbird apps must be running the same version, but out of an abundance of caution, I would like to do that at the version of the production system which is on ESR at version 128.5.2. The download page is only offering a 140.something on the esr channel. Is there anyway to get 128.5.2 to accomplish the migration?

When I try to install TB, I use POP. i then get a message that the incoming server already exists and can't go any further. If I use IMAP I get a page saying Edge: Too many requests. Also a page pop ups that says enter credentials for my email address at pop.mail.yahoo.com and I still can't install TB. What is the problem? I am using Windows 11.

I have deleted Thunderbird and the associated profile folder. Downloaded Thunderbird from the Mozilla site but it still installs with old information. I'm trying to get the info from an old computer onto a new one but following the directions to do this still doesn't give me the info from the old computer. Not tremendously tech savvy so would hope to get clear directions on what I may be doing wrong and how to fix it? Gone through what I can find here but nothing has helped. Windows 11 OS on both computers.

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.

I have had Thunderbird forever. I have 2 point security & I have lost control of my Thunderbird as far as installing it on another computer. It works just fine on my Desktop which will have to be updated to Windows 11 soon. I have tried installing it on a few laptops to no avail. I followed David (of the little dog!) advice. He gave me instructions on how to save my Profile, which I did. It was big, took a while but it informed me there are some items that were not able to be copied, so I don't know it that will work when I do make my move. I had another thought. If I go into settings and passwords and delete the second security measure until I make the move, leaving me with a simple password, will that hopefully allow me to install Thunderbird on my laptop?