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Hi,

I’m looking into using Firefox as an alternative browser in our work environment and wanted to check whether it is suitable for regular business use.

Are there any known limitations, security concerns, or recommendations we should be aware of when using Firefox in a corporate environment? We mainly use web-based internal systems, so stability, security, compatibility, and centralized management are important for us.

Also, do you recommend Firefox ESR for business environments, or is the standard Firefox release normally sufficient?

Thanks in advance!

I get the window shown in the attached image when I launch Firefox now that I have updated from the ESR 140 versions to the ESR 153 versions.

If I click OK, it takes me into Firefox but it appears that the settings in my auto config are not being set suggesting that the configuration file that cannot be read is the firefox.cfg file that the instructions for auto configure (https://mzl.la/3pb4w0I) tell one to create with all the settings. It appears that the autoconfig.js file that is in "C:\Program Files\Mozilla Firefox\defaults\pref" is being read correctly as the two settings show properly in about:config.

I have set the specs on autoconfig.js to have be:

• end of line as LF and not the Windows/DOS standard of CRLF,
• the text encoded in UTF-8, and
• I have tried with BOM and non-BOM.

I have also tried these specs on the firefox.cfg file even though the the auto configure instructions do not say what specs to use on that file.

As I mentioned, things worked fine while I was using Firefox ESR 140.x, where x could be completion of any of the valid version numbers. Now that I have upgraded to Firefox ESR 153.x, this problem seems to have surfaced.

From the auto configure instructions, firefox.cfg is to be placed in "C:\Program Files\Mozilla Firefox", however, in doing a web search, I came across and article on LinkedIn (https://www.linkedin.com/pulse/2023fix-firefox-failed-read-configuration-file-error-andrew-m) from about three years ago that indicates firefox.cfg is to be in the same directory as autoconfig.js. Given it worked as described in the auto configure instructions before ESR 153, I figured this was wrong but tested it anyway by moving the firefox.cfg file. It changed nothing.

This is a problem for all my users on each of their individual domain accounts. I have tested and it makes no difference whether I'm running it on a Win10 or a Win11 computer.

I am using auto config for those settings that cannot be changed through Group Policy.

The operating system on my iMac is still the same version as when I bought it about 10 years ago: macOS High Sierra Version 10.13.6. Since I recently downloaded the latest version of Firefox, left mouse clicks no longer work in Substack pages. How can I download and install a version of Firefox that will go back to working for me the way it used to? I'd rather not update to a later version of the macOS operating system. I suppose I can if I absolutely have to, but I haven't been able to figure out how to do that either.

In China Mainland,The Google play server is baned by China govmnet. But in mozilla firefox download page,the android version firefox download way only for Googleplay. i kown can to https://ftp.mozilla.org/pub/mobile/releases/ to download firefox apk,but too many i can't understand english word mean.When i read https://ftp.mozilla.org/pub/mobile/releases/latest/README.txt,i try to download URL https://download.mozilla.org/?product=firefox-esr-latest&os=android-api-9&lang=zh-CN,it return 404 not found.

Can anyone help me?I can offer all info if you need.

UBS Digital Banking is asking me to update my Firefox browser (140.15 Oesr), even though it is up to date according to the information on the Firefox support page. This version is no longer compatible with UBS’s technical requirements. What are my options if I wish to continue using Firefox rather than another browser? Thank you Luc

I have a MBP running OS Sierra (10.12.6).

I've exported all my bookmarks & Passwords ready to import them later.

I've downloaded the extended 115.40 version of Firefox. I've deleted the 'old' versin of Firefox and opened the esr and I see the bookmarks are still there... so what did I do wrong?

I'm still getting the 'This browser version is no longer supported' Error

Thanks g

I AM USING A samsung SMT-810 tablet which is beyond Samsung EOL for OS updates, more and mor apps update and then stop working, What version of firefox should I be running for best compatibility or are there other solutions?

I'm running mac os 10.13.6 and have installed Firefox 118.38 ERS but some websites are not allowing me to proceed due to my system being outdated/unsupported, what can I do about it? Cheers in advance for any pointers.

Did a refresh lc on desktop. Lost all browers - they are not hiding, gone. No cmd prompt work, cannot install. Need to use external device w usb to be ablw to download a browser on desktop that only has Wibdows 8.1, so Firefox 115

I have not been able to sign on to my bank account nor yahoo account?

Have changed passwords, still no help?

I have Avast Security...no problems there?

Hello! I'm on Debian, and there Firefox ESR is the default browser, it is now basically unusable as it is so out of date that Cloudflare Turnstile no longer works.

This is a major problem.

I have opened a ticket over at Cloudflare, but they have not commented at all on the problems: https://community.cloudflare.com/t/turnstile-not-woring-for-the-last-few-days/939637

Thank you for your time.