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I updated to 155.0.1 via the update modal yesterday, on MacOS Tahoe, and it didn't restart as normal. The main message pane was blank with "No Message Found" (screenshot attached).

I tried installing a fresh 155.0 over, that did not work; but, a restore of the prior app from my Time Machine did work -- that is, the application not the user profile data.

I just thought this was strange; never ran into it.

If there is an issue and I can help test it usefully, I happy to do so (I have backups! LOL).

Forrest

Hello,

I would like to obtain the complete release history of Firefox ESR Portable, including:

The exact release date of each Firefox ESR Portable version. The corresponding Firefox ESR version number (e.g., 115.x ESR, 128.x ESR, 140.x ESR, etc.). Any available information regarding delays between the release of Firefox ESR by Mozilla and the release of Firefox ESR Portable.

Could you please provide a list of all Firefox ESR Portable releases along with their release dates, or direct me to an official source where this information can be found?

Thank you for your assistance.

When I started up Windows 11 on my new laptop, I had to connect to the web via Edge to be able to install Firefox. I foolishly went on to install Firefox via Microsoft Store. I have now installed Firefox from the Mozilla website via the Microsoft Store version, but I cannot uninstall the Microsoft Store version. I don't have access to the folder where it is installed even though I log on as an administrator.

Hi, I updated Betterbird 153.2. Now when I open Betterbird I get a box asking me to use betterbird for default actions for Custom Thunderbird Links. Should I accept??

Could this be why I can no longer get yahoo.com mail?

the original error was posted 2015 I had the same quite some times no in 2025/2026

"My Firefox is opening in Administrator mode, which prompts me to agree to allow Firefox to make changes to my PC every time I open it up. I read that I needed to go to Properties and deselect all my compatibility settings but this doesn't work. Any suggestions would be greatly appreciated?"

Dear reader,

I wanted to completely removed Firefox because i had some issues. Instead om removing I probably refreshed FF.

Can somebody help with?

1. How to remove old FF data which is placed on my desktop and blocked for removal by admin rights. 2. How to completely remove FF without leaving any data (profiles, extensions)

I have tried to find this answers in the help sections but I was not able to find the solution for my situation.

Thanks in advance. With kind regards,

Ilco

duplicate of /questions/1588673 thread

In attempting to download Firefox to my Apple iPad, i instead get routed to Microsoft "X." How can i block "X" ?

I just downloaded the latest FF having had an old account. Working fine but I continually get a message that I am on windows 10, which is wrong. I am on Windows 11. The message has worn out its welcome. Is there a way to fix this.

I read the instructions on moving my profile to a new computer. The hitch is that on my current, Windows 10 computer, I’m apparently using a 32-bit version of Thunderbird. I only discovered this when I updated it (through Help) and saw that it updated to a December, 2024, 32-bit release. The transfer instructions state that there may be a problem if I try to use a Thunderbird profile from one version to a different version. To prevent that possibility, I either have to update my Windows 10 Thunderbird to the latest, 64-bit release, or specify the 32-bit install on Windows 11. Problem is, I don’t know whether or how I can update Windows 10 computer to latest Thunderbird 64-bit version. Can I? If not, will Windows 11 run a 32-bit release? Suggestions?

Before purchasing, I verified that Mozilla VPN will work on Chromebook (shown on the FAQ page for the VPN). Since I can't install software on a Chromebook, how do I go about using Mozilla VPN on it?