Forum der Gemeinschaft Firefox

my wife's copy of Firefox picked up a virus. After trying several other things, I saved the profile, uninstalled FF, and installed the latest version. But when I tried starting FF I got an error message: Your Frefox profile cannot be loaded. It may be missing or inaccessible.

I have been a long time user of FF and have been puzzled by it's recent failure (to both start, and subsequently re-install) For the last 18 months I have been running Win 12 without problems. That is until last week, when I can only assume the Tuesday udates ( MS) has created havoc. I would appreciate any assistance as I am not fond of MS Edge, or Google Chrome. Dave Hickman.

Hi, I have been experiencing issues lately with Firefox. Attempting to install it often comes up with errors suggesting file corruption but I eventually got it to install. However, now it crashes as soon as I open it and in the past before a system reboot on my PC, Firefox tabs crashed very often. I'm trying to diagnose the issue. I have completely uninstalled and reinstalled Firefox multiple times.

As my laptop is currently experiencing other issues, if there's a specific driver that is causing trouble, it'd be great to figure out what's wrong and what is causing Firefox to not function.

My specs are: Asus Rog Strix G614JIR - (GPU: 4070RTX, CPU: IntelCore i9, SSD 1TB, 32GB RAM).

I have attached the most recent crash. Any help is much appreciated. Thanks.

I can't install Mozilla VPN on MacOS 10.15.8. The installation programm tell me to ask for help to the editor of the VPN... I'm afraid that it's possible there is NO version available for my old machine... Am- I right ?

Hello, the official mozilla page instructions for how to download Firefox for Linux (Debian 13) is wrong, it fails on Step 3 saying that the key verification is incorrect thus I have not tried the steps after 3.

I know Debian 13 comes with Firefox ESR but from my research this is packaged and maintained by Debian, I would prefer it if all my eggs were not in one basket and I actually had the real source maintainer updating my browser aka Mozilla.

I don't know what else to say, it is just incorrectly written or something, because Brave Browsers installation instructions are SOO much better and simpler, super easy works 10/10 times, and it's way fewer commands.

Please help, thanks!

I try to install Firefox directly from the Mozilla repository.

For that, I read the article "Install Firefox on Linux" and followed the install instructions in first chapter "Debian-based distributions" step-by-step. (article https://support.mozilla.org/en-US/kb/install-firefox-linux)

Unfortunately, with every attempt to install Firefox, the Firefox LinuxMint (Ubundu) package will be still installed. The command to priorise the Mozilla Repository seems to have no influenace.

How can I prevent/avoid to use the LinuxMint/Ubundu repository? I wan't to install and update Firefox direct from Mozilla source.

I'm using Linux Mint 22.1 Xia base (Ubuntu 24.04 noble)

I am getting a report from Firefox when I run the install that it can only run on Windows 10 or Windows 11 and since this is a brand new win 11 computer that has never had any other OS on it, I do not understand the report.

What can I do. Chrome and Edge had no problem loading. I plan to install Brave next.

Firefox is my primary browser.

Gordon Jacobson

How do I reinstall Firefox FROM SCRATCH when older settings (but not the .exe itself) is still on a Windows PC? Will deleting all entries in Windows Registry fix it?

Background is that I switched Sata cables for some hard drives (for an unrelated experiment), of which one contained the Firefox installation on D:. Then I ran Firefox, and somehow it seemed to work and I also was promted to install an update which I did. After some days I switched back Sata cables. Now I cannot uninstall old instances of Firefox that I can see in Win Settings -> Apps. Worse, I cannot install Firefox anywhere AND also make Firefox running without a crash after a few seconds. To remove all info in registry and hard drives might be the way to solve this?

Using last Windows 10 install, and 153 esr.

Manually entering an address in the address bar sends it to search.

The advice from 2020 found with a search online, and in Mozilla Firefox support, does not solve the problem.

Not only is it a time-wasting obstruction for a new page to open and put the address at the top, it is a problem that the address bar can not be used as intended for manually entered addresses.

I'm guessing the problem is also responsible for the problem of clicking on a link in a program not opening it in firefox in Firefox. I have two programs setup, correctly, to open Firefox or go to the open browser when I click a link. I get a return in both cases that the browser may not be installed correctly.

I installed the browser as usual. Currently: 153.2.0esr I had 153.1 installed, however there was an unrelated (presumably) Microsoft problem and I had to restore. 153.1.0esr disappeared from my computer and online. So I downloaded 153.2.0est. However, both of these problems have manifested since updating to 153:

• Address bar does not function properly when adding a manual address.
• Clicking on a link in a program no longer opens the link in Firefox

I downloaded the full install program, as usual, and installed on top of the current install so my established profile is used. There are no major changes - except when features have become dysfunctional.

Searches online and at Mozilla support make clear these are current Mozilla Firefox issues. I can find no mention of either problem in Mozilla support.

Is there a solution to either or both of these problems in 2026?

p.s. I have no intention of upgrading to Windows 11. I also have updates disabled, however that did not stop microsoft from surreptitiously installing Snapshots and a personal A.I. app (evidence of which is in the registry which I deleted). The computer was lagging and glitching and running the disc almost constantly. So I went looking for what Microsoft had done - again - without my knowledge or opportunity to consent (or not) and found the culprits. I also found entries in Explorer directory for both features and deleted them.

I have just purchased the latest version of Mozilla for OS. My computer is older and the operating system is Monterey 12.7.6 I am assuming that my computer's operating system is too old and the new mozilla will not support my Monterey system, correct? Is there another Mozilla version I can download?

I am trying to install firefox on my new work laptop. The OS is Windows 11 Pro. It came with an ARM CPU. Specifically: Snapdragon(R) X Elite - X1E80100 - Qualcomm(R) Oryon(TM) CPU. Everytime I try and install Firefox, which is probably over 10 tries by now, it fails with generic errors. I have tried cleaning everything Firefox related off the PC before subsequent attempts and still get the same errors. I am including a screenshot of what I see shortly after starting the install process.

Dear Sirs! I've been trying to install FF in several ways. Using installer.exe and setup150.exe. I started these files from same disk as the system (C), Temp folder empty and unlocked for read\write, located where it should be C-user-appdata-local-temp. I started files as administrator. Each time the setup fails with system notice like on the picture attached. It says "can not find specified file"

My notebook is very old, but it runs Win 10 OK, Chrome is OK also

Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz 2.27 GHz 4,00 Gb SSD 224 GB SSD P4-240 Mobile Intel(R) 4 Series Express Chipset Family (Microsoft Corporation - WDDM 1.1) (64 MB) x64 system

Please help!

I'm trying to install version 52.9.0 of Firefox on windows XP. The file available here does nothing when I run it. Windows doesn't show any dialogues or give errors. Nothing happens. When I check on Taskar, I can see the CPU activity go up, but the installer doesn't appear as a process. This is where I'm downloading the setup file from: [http:// https://archive.mozilla.org/pub/firefox/releases/52.9.0esr/win32/en-US https://archive.mozilla.org/pub/firefox/releases/52.9.0esr/win32/en-US

I’m trying to install the latest version of Firefox on Debian, as described at https://support.mozilla.org/en-US/kb/install-firefox-linux#w_install-firefox-deb-package-for-debian-based-distributions. I’ve tried twice, several days apart, but both times things fail at the third step, with the fingerprint not matching. Can I do anything besides try again later? I’m using Firefox ESR, as packaged by Debian, in the meantime.