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I have used version 145 of Thunderbird "all my life". Until the other day when I installed version 146. I realize of course that development changes things, but I would like to inform you that a 93-year-old has neither the patience, energy or interest in learning the new Thunderbird. I therefore wish that someone would be so kind and send me the installation file for the previous version. (Unfortunately, my own one is in a computer that I no longer own.) Furthermore, I donated 194 SEK on December 26th when I downloaded the program. (And it wasn't the first time.) In summary: I would like to get the installation file for the previous version (for Win11, 64 bit). Best regards Hans Peter Wiehen

hi,

  I have an old PC with this CPU:

Architecture: i686

 CPU op-mode(s):         32-bit
 Address sizes:          34 bits physical, 32 bits virtual
 Byte Order:             Little Endian

CPU(s): 1

 On-line CPU(s) list:    0

Vendor ID: AuthenticAMD

 BIOS Vendor ID:         AMD                                             
 Model name:             AMD Sempron(tm) 2400+
   BIOS Model name:      AMD Sempron(tm) 2400+                             CPU @ 1.6GHz
   BIOS CPU family:      29
   CPU family:           6
   Model:                8
   Thread(s) per core:   1
   Core(s) per socket:   1
   Socket(s):            1
   Stepping:             1
   BogoMIPS:             3333.66
   Flags:                fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat p
                         se36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow cpuid 3dnowprefe
                         tch vmmcall

Caches (sum of all):

 L1d:                    64 KiB (1 instance)
 L1i:                    64 KiB (1 instance)
 L2:                     256 KiB (1 instance)

Vulnerabilities:

 Gather data sampling:   Not affected
 Itlb multihit:          Not affected
 L1tf:                   Not affected
 Mds:                    Not affected
 Meltdown:               Not affected
 Mmio stale data:        Not affected
 Reg file data sampling: Not affected
 Retbleed:               Not affected
 Spec rstack overflow:   Not affected
 Spec store bypass:      Vulnerable
 Spectre v1:             Mitigation; usercopy/swapgs barriers and __user pointer sanitizatio
                         n
 Spectre v2:             Mitigation; Retpolines; STIBP disabled; RSB filling; PBRSB-eIBRS No
                         t affected; BHI Not affected
 Srbds:                  Not affected
 Tsx async abort:        Not affected

in some linux (arch 32 bit) I have problem executing firefox, Is there a version for CPU without request from SSE3 Flag?

thanks

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.

Would like to test nightly builds of Firefox - how best to get started?

I am a user of Ubuntu and interested in testing the Firefox Nightly via snapstore.

Any pointers helpful.

What is the best way to downgrade from Thunderbird 146.0.1 to the most recent esr release (140.6.0esr?) I seem to recall reading that 146 featured some new data formats that may not be compatible with 140, but I don't find the specifics right now.

The reason I'm downgrading is bugs. I'm aware of the folder naming issue, which I dealt with. But I find a new (to me) bug where 146 will not play notification sounds. This occurs on two of the four (Windows 10 and 11) computers in my house.

The pc is a new Dell 8960 running windows 11 home. I installed t-bird from the microsoft store ver 128.5.2. I needed to do a system restore and when it was done Thunderbird.exe was gone. The link that I used to open it went to c:\users\username\thunderbird.exe but there was nothing there named Thunderbird after the restore.

I found Thunderbird at "C:\Program Files\WindowsApps\MozillaThunderbird.MZLA_128.5.2.0_x64__h5892qc0xkpca\VFS|ProgramFiles\MZLA Package Root\Thunderbird.exe" I made a shortcut to that but the response is "Windows cannot access the specified device, path, or file. you may not have the appropriate permission to access the item."

I do have a current copy of the profile.

Current version of Firefox has

    (1) popups to get me to download a new version,
    (2) tab pickup,
    (3) popups to show
    article titles,
    (4) popups to show
    current URLs.

I just want to download the install programs until I get the most recent one that has none of (1) - (4).

I need to go back 1, 3, 5, 10 years?

So where on the Internet should I go to get such an old Firefox install program?

I used to really like Firefox, but changes (1) -- (2) have ruined it for me.

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.

This has probably been asked many times but I haven't seen it. I have a home network with three computers on it, each located in different parts of my house. I'm running Thunderbird on one of them and I'm very happy with it. But for convenience, I'd like to be able to run it on all three computers so my email is easily available no matter which machine I'm on. Is this possible, and if it is, is it just a matter of downloading the software on each machine and duplicating the settings? Are there any glitches I should be aware of?

Many thanks...

Madam/Sir

Please let me know if Firefox VPN is now made available for installation for Indian subscribers.

I am aware that Firefox may not have a server in India,as per our laws.

            Thanking You,

               Viraj

Hello,

I'm running Thunderbird Beta email on two Windows 11 computers, one I7 one I5. The former I notice reports a 32 bit version the smaller machine (latest) a 64bit version.

I wish to know how to update the 32bit to 64bit. Is it a simple matter or likely to lead to a corrupt installation. Perhaps I shouldn't be concerned but now have become aware of the two different versions. Both machines are active with my own accounts as the I5 serves as a backup computer.

I welcome you're advice. (I don't recall being offered a 64 bit version when I installed on the I7 some 6 months ago. Perhaps it wasn't available?)

Kind Regards, Alan from the UK

I donated and installed thunderbird on my laptop last week. I have donated twice more in the last few days to install thunderbird on my android phone in the last few days unsuccessfully. I do not know what I am doing wrong. Can you help me?

My Macbook Pro has been crashing - sometimes Firefox, sometimes Thunderbird -sometimes multiple times/day. I've saved many of the crash reports in case they might help someone know how to fix this. An Apple tech person diagnosed my memory was broken, so I just got a new logic board and reinstalled all my data from my Time Machine backup. Then a message popped up that Thunderbird was damaged and should be put in the trash. Around the same time i replied to an email from someone at Thunderbird donor who was responding to a question i had about a small donation i tried to make - i explained i was having trouble with Thunderbird. At that time, i could see the Thunderbird icon in my task bar. When talking with someone from Apple support this evening who was helping me answer a couple of questions, including about a new "mail" icon that showed up in my task bar, I mentioned that i'd like to learn how to back up or archive my emails in Thunderbird. That's when i saw that the Thunderbird icon - had disappeared. The Apple support person and i searched all over my computer for the Thunderbird app, but couldn't find it. I'm really nervous. I have over 300,000 emails I've been wanting to learn how to archive - or something. I don't want to delete most of them. I hope someone can help me find everything. Thank you.

Mozilla previously released Thunderbird on Flathub. However, the version of Thunderbird available on Flathub does not support Arm64. As a result, many users rely on the built-in repositories of their Linux distributions to install Thunderbird. Unfortunately, the Thunderbird versions provided by many of these repositories are outdated. Using outdated versions poses security risks and does not meet modern security standards. I believe Thunderbird should provide an Arm64 build on Flathub so that users can more easily access the latest version of Thunderbird.

What is the latest version of Thunderbird ESR for Mac OS 10.13?

Firefox ESR 115 for has been extended for High Sierra and I was wondering if Thunderbird ESR will do the same.

I have a 2011 iMac that is MAXED out at High Sierra so I can't use the current ESR version as it requires MacOS 10.15 Catalina.

I have been having trouble with my Windows 11 laptop. In my efforts to resolve these issues I noticed that I now have two installs of Firefox in my Control Panel. Both installed during my time of dealing with my Windows issue. Five days apart Feb 5 and 10, 2026. Both show the same version number 147.0.3, and same size 322MB. I have used FF for many years so these seem to have been installed sometime during my efforts to repair Windows. My FF was never a part of the Windows issue AFAIK.

Anyway I have FF working as I like with my Session Manager and various AddOns and personal settings, so I do not want to have to start over with FF. So how do I choose which instance of FF to uninstall in Control Panel?

My issue with Windows was my Outlook would not connect to the server. I assume Microsoft Exchange server, my internet connectivity was fine. And FF was fne as well. I eventually was able to repair my M365 connectivity. Major PITA from out of nowhere.

I recently donated to TBird but it is unable to send any emails. So I uninstalled it and tried to download a fresh copy but I couldn't avoid the donating page. I paid again but I just get a page telling me to finish downloading - but not how to do so. I've waited half an hour but nothing has been downloaded. If it's still possible to download TBird, how can I do it - preferably without repeatedly paying?