Firefox Community Forum

I've had a problem for a while where Firefox tells me "Firefox is being updated by another instance" and the only way I've been able to get updates is by using the installer.

In my attempts to resolve this, I learned of the `about:profiles`. I have never set up profiles so I figures I should only have the 1 default profile but it turns out I have `default`, `default-release`, default-release-1`, and `default-release-2`.

Of these profiles, the `default-release` is the 1 that has my data while it is `default-release-1` that is able to update.

I would like to make it so that I only have 1 profile that has all of my data AND is able to update.

I already tried removing all the profiles accept the one with my data but that leaves Firefox unable to update. I restored all the profiles I removed and I am back to where I started.

Does anyone have any suggestions?

Je suis constamment interrompu par le pop up suivant, comment le faire cesser? "Contrôle de compte d'utilisateur. Voulez-vous autoriser cette application à apporter des modifications à votre appareil? De Firefox Soft ware Updateur. Editeur vérifié: Mozilla Corporation. Origine du fichier: Disque dur de cet ordinateur." Pourtant dans les paramètres on indique que tout est à jour et aucune action n'est requise. Comment le flusher sans qu'il réapparaisse à tout moment et comment puis-je m'assurer que ce n'est pas de l'intrusion ?

Every time I log into MOZILLA_FIREFOX it asks to update. I have tried this before. I usually just hit that NO button...When I do click on the YES button & try to update...IT WIPES OUT EVERYTHING I HAVE STORED ON FIREFOX. EVERY SINGLE PASSWORD...SHOPPING LISTS...I'm done! I now once again have to go and recover all my information. Thing is....it updates automatically........so WTH is going on? I will start looking for aother browser...is this a scam or what?

I frequently get a notification that an update failed to install and to install it manually. When checking the update section in the settings I see "Restart Firefox to install update". After restarting, the same section shows "Applying update..." but never finishes. This has been happening for a while and it's becoming very frustrating. Any help is appreciated.

One more thing that may be related: sometimes when launching Firefox, the window will pop up for a split second then close and I have to launch it again. This usually happens on a cold start.

Firefox will randomly require an admin to install the latest update and then go 10 or so updates without any admin access needed.

Work device, all users are non admin making this extremely tedious to update a browser that brings a new update almost every 3-5 days.

On top of that, I elevated to admin and went to the help > About section and pressed Restart to Update Firefox and entered admin creds and still its refusing to update. Just re-opens on 151.0.4.

On the previous version it did the same thing. I completely wiped my firefox from the system, removed all registry and file settings, rebooted, and did a fresh install.

now on 152.0 its doing the same thing again.

Hello, a recurring problem that's been bothering me for several months is driving me crazy, causing me to use Firefox less and less.

I regularly get the dreaded message "Error: Platform version xxx is not compatible with xxxx," which seems to have been around for years and still hasn't been fixed. Rebooting, reinstalling, or repairing the installation with every automatic update isn't a solution; it's just a nuisance.

I'm too old and tired to try to find my way around the new update. How can I return to the previous version? Life was so simple. Now I spend more time trying to find things that I can't find than I do online doing something productive.

Please tell me there's a simple way to get back to the previous version and that I won't lose my bookmarks and links.

The Firefox update I was prompted to initiate on May 12 resulted in a compatibility issue message. Following Firebox Help recommendations, I re-installed my Firefox. Now I see that my downloads folder has a long string of unfamiliar files, and I need assurance that these are not remnants of malicious activity. All files have names like i-33639-002-XX.jpg and are dated the same time (5/12/2026, 4:07 PM). Each file shows as “0 KB” in size. All are listed as “JPG File”. Has this happened to other Firefox users?

I am getting the message "updates are disabled by the admin." I am the only one here so I don't know how that happened. I need to install Slack but need to update first. I followed the steps to edit registry but still can't update. Please advise.

I have deployment firefox 148.0.2 version from SCCM, its on autoupdate. So, when it is pushing to machine and during launch its giving prompt " You have launched olderversion of firefox ". even though i have cleared old version or any other version and then pushed still giving same prompt. We need to remove this prompt from appearing to users. kindly suggest how to fix

I am currently using Windows 11 (64 bit). I have installed Firefox in a separate drive instead of Local C to save space. Now that I have done so, the automatic update fails often which causes me to try and find the custom installation on the Firefox download page. I use https://support.mozilla.org/en-US/kb/custom-installation-firefox-on-windo... page to try to find the correct installer.

Unfortunately, the download page that I was directed to, I can't seem to find the custom installation setup. When I click download, it keeps giving me the automatic Firefox Installer and proceeds to add Firefox on my C drive rather than the Mozilla Firefox Setup Wizard.

Can someone kindly direct me to where I can download the Mozilla Firefox Setup Wizard to update Firefox?

So I guess my Firefox update to ver. 147 from 146 by its auto update feature, but I realized all the past personal data (ie, history, cookies, passwords, profile, etc) was gone.

I have Mozilla Account (I think it's the same as Firefox Account back in the old days), so my personal data is now retrieved from some device as far as possible, but I lost local personal settings like Shortcuts on the main page on my laptop,p which is the main device to do everything.

I can't help what happened to me, and I will rebuild what I used to be on that day, but I am curious if it's just me, or there is some logic to cause this data loss.

В России блокируют Firefox, по этому авто обновления не устанавливаются, я бы хотел получить ip и url серверов от куда скачиваются обновления. Это поможет обойти блокировку и восстановить работу firefox в России

Mozilla support articles frequently state that Firefox does not use popups for browser updates. However, I periodically receive popups from the toolbar stating that Firefox couldn't update automatically. The attached picture is an example from the web but looks just like the popups I receive. The issue typically either resolves itself or I download from the Firefox website and reinstall. In a rush/moment of weakness, I recently clicked the link in the popup. It took me directly to the Firefox website where I regrettably downloaded and updated the browser. I've since run multiple Norton and Malwarebytes scans, which have found no issues. It may be a difference in the definition of popups (from the toolbar vs within a browser page)... Is this a legitimate update message from Firefox? If it is not, are there any other steps I should take (e.g., reinstall Firefox)? I appreciate your help!

Why does not FF recognize that my OS is windows 11, not incorrectly windows 8? This prevents me from updating to latest FF browser versions newer than 115.37 to 128 and higher. Now, with the popularity of AI, my bank no longer supports FF version 115.37 or lower browsers. Might it be FF is not seeing the correct IP address for windows 11 OS? However, I see nowhere on my FF account to let me or FF correct this error. If this cannot be corrected, this I (and thousands of other users) will have to abandon FF for other more up to date browsers because it looks like google, ms and apple are herding their clients to stop recognizing other browsers, which do not support AI protocols.