Firefox Community Forum

Hi,

I am trying to develop a script to control extension management for Firefox on windows. I tried to create policies.json in C:\program files\Mozilla Firefox\distribution {

 "policies": {
   "Extensions": {
     "Uninstall": ["{63d150c4-394c-4275-bc32-c464e76a891c}","{63d150c4-394c-4275-bc32-c464e76a891c}"]
   }
 }

} This neither gets reflected in about:policies page, nor I see these extensions getting uninstalled/prevented from getting installed again.

I also tried to add extension to registry Software\Policies\Mozilla\Firefox\Extensions\Uninstall\1={63d150c4-394c-4275-bc32-c464e76a891c}, but don't see any impact.

Can someone please give any pointer for above approach not working.

Many Thanks, Gyani

Previously, recent websites, and pinned websites would show on the Firefox Home / New Tab page. Now, it is completely blank, except for three rows of blank boxes, which are unresponsive, a search entry, which works, and a weather app with menu.

I've searched and searched for a solution, find limited cases previously, but no solutions.

Before the latest update whenever I made a browser window fill half the screen it would keep the search bar visible. Now it only keeps the address bar visible. Even after moving the search bar to the far left it still disappears unless I make the window slightly bigger, which is impractical. I just want to be able to quickly use other various search engines that I have installed as addons by pressing the up or down key, even when the window is half my screen again.

Firefox has an extensive History record of websites/pages viewed. Is there an Add-on / utility that will allow you to VIEW the page data - as it was displayed on the date it was accessed & NOT re-load the page ?

Basically ability to view a page 'offline' as another browser used to be able to allow you to do.

I cannot display Amazon Deals properly that contain multiple he products. The home page and single products display normally. should be. A page with multiple products has large blank areas where the product should be. If I move the mouse over these spots, a soundless video will often display.

My clearing of the temporary cache files did not help. Stopping Ghostery doesn't help either. Other add-ons include Last Pass, Honey, Review Meta and Facebook Fences.

Help is appreciated.

I keep a lot of tabs open (~60) in any particular session - I find it's faster in this way to get back to a site.

About every six months or so, I lose *all* these tabs because of Firefox's inadequate session backup system. It only saves two or three total backups, some of which are completely out of date. But the worst scenario is when (1) some site pops up a new window; (2) I mistakenly close my main window before the new window; (3) I open this new saved window once or twice by accident, causing my 60-tab session backup to be overwritten.

Using a third-party session manager (I have tried all the well-known ones) can mitigate this problem, but doesn't really solve it because the re-opened sessions aren't quite in the same format as Firefox sessions and so lose information. In particular, I often lose each tab's icon as well as metadata for Tree Style Tab.

Could Mozilla please consider a more robust session backup system for Firefox? All it would take (I think) is to allow the user to choose the total number of backup sessions and the frequency at which a new session is added. Thank you!

Hello:

I'm not certain if this question comes under Firefox or not:

How do you stop a specific computer software program-app pop-up notification (popping out from the lower right corner of your computer)?

As an example, I have a utility program, IOBIT Malware System Care that pops-up various notifications such as "update notice," "renew," "discount sale" or whatever notice or ads that is 'pushed'.

-I went to my Windows 11 list of installed app "notifications" and this program is not listed. -I tried contacting tech support but they haven't responded. -I went to Firefox 'Settings' -> Privacy & Security->Permissions and then I opened up 'Exceptions' to see if I can block something. It wants me to put in a specific website. The issue is not a website but coming within a software / app program.

So how and where do I stop a "pushed' notification? I assume it's coming in via my browser / Firefox?

Thank you in advance,

Steven

I could not join a Google Meet meeting today with either an old or new Google Meet url. I don't have a problem with other sites. What could be wrong? Could Firefox be blocking it?

Hello! I want my address bar to be simply that - an address bar. I do not want to search from it, I do not want to run commands from it, I do not want to run shortcuts from it. I just want it to take me to that address - and if that address is not valid or available, I do not want suggestions or options. Just an address bar, nothing else. Is this possible? Thanks! -Doug

When I click on the grey Last Pass icon, a "set preferences" screen is shown. The strictly necessary box is selected and I cannot change it. The Voluntary data collection box is clickable but does not make any difference if it is checked or unchecked. The screen is locked, no matter what I click or unclick. The only thing that I can do is to click the grey LP icon which closes the window.

On two other very similar computers, when the grey icon is clicked, I can search for passwords, alerts, account, etc. Why does the icon work on this computer. I've deleted the addin, deleted Firefox and reloaded several times.

Thank you

Fix for RangeError: invalid language tag and client-side exceptions in Firefox on Linux

Hi everyone, I was experiencing persistent JavaScript errors in Firefox on Linux when loading certain modern websites (e.g., built with React or Next.js). The browser console showed messages like:

   RangeError: invalid language tag: "chrome://global/locale/intl.properties"

   A client-side exception has occurred (see the browser console for more information)
   React error #418 with minified stack traces

This happened even in Safe Mode, with all extensions disabled, cookies/cache cleared, and Enhanced Tracking Protection off. ✅ Root cause and fix:

Turns out the issue was related to missing or broken locale configuration in Firefox. To fix it:

   Open about:config

   Create a new string entry:

       Name: intl.locale.requested

       Value: en-US (or fr, en-GB, etc. — any valid locale)

   Restart Firefox

After adding this key, all affected pages started working correctly. The invalid "chrome://global/locale/intl.properties" error in intl.accept_languages disappeared as well — it seems that was just a side effect of the missing locale setting. 🔁 Summary:

If you’re seeing RangeError: invalid language tag and React crashes, try adding intl.locale.requested manually. This fixed the issue entirely for me on Linux.

Hope this helps others!

Since Mozilla made Firefox Beta's update (B141.05), a few days ago, most fonts (.ttf's) and icons (.ico's) are matching the same color as the background (.bmp's) of the pages. Who else has noticed so? This does not help any user on any system. Connect.Mozilla.org - Who Agrees that Most Fonts are Camouflage to Websites?