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What happens if I uninstall and reinstall Firefox

Firefox is just not working for me. It's not reading the stylesheets on my website, tabs are disappearing but the websites are still open. It seems the installation may h… (read more)

Firefox is just not working for me. It's not reading the stylesheets on my website, tabs are disappearing but the websites are still open. It seems the installation may have become corrupt. If I uninstall and reinstall what data will I lose if any?

Asked by mrsyardbroom 1 day ago

Last reply by mrsyardbroom 1 day ago

Firefox v.100 won't work on MacOS El Capitaine

Invited by your recent email, I downloaded and installed Firefox v.100 onto my old but still very trusty MacBook Pro laptop, which can't reliably run anything later than … (read more)

Invited by your recent email, I downloaded and installed Firefox v.100 onto my old but still very trusty MacBook Pro laptop, which can't reliably run anything later than El Capitaine. It downloaded and installed ok, but then refused to work, with a message that v.100 needs at least High Sierra to operate. There was no warning of this prior to installation. I searched the disc with Disk Drill, hoping to resurrect the older version of Firefox. However, it seems that v.100 has overwritten the previous version rather than deleted it, since Disk Drill could find no trace of any version, deleted or otherwise, other than v.100.

I note that you retain backnumbers of Firefox on your website - so my question is "Which one should I download that will reliably work on El Capitaine?" I'm currently forced to use an old version of Safari as a browser on the laptop which I dislike intensely. I'm submitting this question from my desktop machine running High Sierra, on which v.100 works very well.

Many thanks in advance for your assistance. Gareth Bennett

Asked by garethb 5 days ago

Firefox Browser vs. Mozilla Firefox Browser in Win10

Last year someone asked about 2 Firefox for Android applications; I just had two different copies of Firefox installed on my Win 10 laptop (one in an attempt by Microsoft… (read more)

Last year someone asked about 2 Firefox for Android applications; I just had two different copies of Firefox installed on my Win 10 laptop (one in an attempt by Microsoft to upgrade to Win 11) where all my data was in the old app named 'Mozilla Firefox') while the newly installed app was just 'Firefox' and had none of my data. I did not attempt that new install, it seems Microsoft did ?? They also mentioned wanting to redirect the new Firefox to specific Domain Name Service servers, rather than the traditional server addresses provided by the local network. Anyone know what's going on?

Asked by bob_ferguson1 1 day ago

"unknown source" warning when updating Firefox

I have two identical computers running Firefox on Windows 7. No serious issues for 3 years or longer. Just recently, version 100 showed "Unknown Source" instead of the… (read more)

I have two identical computers running Firefox on Windows 7. No serious issues for 3 years or longer.

Just recently, version 100 showed "Unknown Source" instead of the normal UAC authorization window which lists mozilla.org as the source.

The 100.0.1 update showed the same warning.

This only occurred on one of the computers. The other one does not show the warning.

Firefox worked fine after doing the downloads anyway, but the "Unknown Source" is not right and makes the user think security is being compromised.

Asked by pacific1927 1 hour ago