Firefox Community Forum

Hello. I developed an addon to delete multiple reddit posts. It's built with the help of claude but regularly passes ReferenceError: browser is not defined

I'm adding the 3 files for the overview. Does firefox need some sort of API? https://storage.to/c/IXAJT4jqn

Win10 desktop: Boot-up forces selecting Firefox as default, then goes to default apps screen. Selections are correct. No save function (thought they auto-saved) . Then have two Firefox icons on taskbar: first is far left (normal) select and calendar & email launch. The second Firefox icon is far right on taskbar: Select and the system repeats the select browser & default apps Shown in the first line above.

can not copy and past in ebay descriptions when trying to make a listing .Also can not type in the description box will work on edge trying to list but can not as i can put information in description box. Tried on edge works fine. turned off enhanced protection still same.

In during a search this problem has happen before after updates

A few months ago, Firefox was handing off 'search' from the Google search bar (in the middle of the page) to the address bar. In March this was fixed with updated version 148.1 (I believe). When I logged in this morning - Firefox said there was some kind of error and made me reinstall it. My search reverted back to handing off to the address bar - AGAIN! In settings I located, under 'Search' the box that allowed this hand-off and I unchecked it and restarted Firefox and STILL my search is being moved from the Google search bar in the middle of the page to the address bar. I mean, WTH?!?!?!? Why is everything always a problem? Why is nothing working correctly? Why does Firefox make these indiscriminate changes? I cannot work like this. Please, please, please, someone help me.

Hi everyone,

I’m facing a strange issue with Firefox and need some help.

When I try to use Firefox normally, it sometimes opens but doesn’t load pages properly or gets stuck on a blank screen. I’ve already checked my internet connection and it’s working fine in other browsers.

I also tried restarting Flixfox and clearing cache, but the issue still comes back randomly.

Has anyone experienced something similar or knows what could be causing this? Any guidance would be really appreciated.

I have been having issues where I am unable to access the website: www.loki.ch. This is the web site for a Swiss railway magazine. I have always been able to access it previously, but haven't used it now for a few months. However this week when I've tried, I'm blocked access to it (see the attached screen shots). I do note that since I had previously access the web site, there have been updates to Firefox. However, when trying to use either Edge or Google Chrome, they also block me, but just say that unable to access the web site, nothing mentioned about being "Not Secure" as Firefox does. It's not a web site where you have to log in and/or use passwords. Contacting the magazine by Facebook messenger yields no response from them. Posting the issue on a Facebook group, other users have responded that they can access it (one was from Slovenia and the other in the UK). One mentioned issues from Australia where I am. It's not a dangerous or suspect web site, simply a magazine about Swiss Model Trains. I have tried adjusting settings to exempt it in Settings - no change. Not a anti virus issue. None of the suggestions in the FAQ have exactly the same scenario in the screen shots attached.

Surely there has to be some way to bypass whatever is in Firefox Security preventing me from accessing this web site?

I have seen many topics about creating your own extension and uploading it to Mozilla for approval but not publishing it so that you can use it yourself only, but none of them tell you what to do after your extension has successfully passed review. I would like to install the extension that I created (and can see in the "My Add-ons" area of mozilla.org), but I have no idea how to do that. Do any of you have any experience with this? This extension was previously only for Chrome but I made some changes to make it Firefox compatible, and I don't want to publish it since it's technically someone else's work. Thanks.

i have been using firefox for like an year, found out now that the email i used for my account on my browser is wrong, the domain has a typo. Does it mean that now all my passwords are saved on a firefox account i cant even access (i have to still finish the setup, obviously i cant as i cant get a code in an email that doesnt exist) and that i cant remove it, ever? Does firefox sync up stuff on an account without the setup even being done yet? Or is the stuff just saved locally and im good with removing the account?

I saw that Firefox offers a free VPN with 50 GB per month. However, when I try to sign in and activate it, I only see subscription options. How can I access the free version?

I am trying to disable the text segmentation behavior in latest Firefox(v151), but I have encountered an issue where changing the preference in [about:config] does not seem to have any effect.

Details:

   Target Preference:  intl.icu4x.segmenter.enabled
   Current Setting:       false

   Problem: 
   Even after setting this to false (and restarting the browser), the text segmentation behavior (such as word selection logic) remains unchanged and appears to still be using the ICU4X engine.

   Reference:
   https://support.mozilla.org/en-US/questions/1440483#answer-1638092

I would like to know:

  1.  Has this preference been deprecated or hardcoded to true in recent versions of Firefox?

   2. Is there any other way to disable the ICU4X-based segmenter or revert to the previous segmentation logic?

   3. If this is a known change, is there an alternative preference to adjust how word selection handles specific languages (e.g., Japanese)?

I am using the latest version of Firefox. Any insights or workarounds would be greatly appreciated. Thank you in advance for your help!

all the routes off the icon lead to "installation and download links" have done both actions with the same result of red dot and NO access to the free vpn...frustration is gaining steam! I have found the button to turn vpn on and off but even closing the browser after closing nor leaving it on has helped activate the service!!!

Please help, old but not too ignorant!!

When I try to customize the toolbar in Firefox the the browser goes to the customize toolbar / overflow toolbar page. However the page does not have any of the tools just a white blank screen. I did just relently refresh firefox

Whether or not I activate the "weather" display (top right of home screen), the blank space above the FF logo remains.

I have 4 shortcut rows displayed and have to scroll down so that I see the bottom row - this is a pain. If I could eliminate the blank "weather space" above the FF logo, my home screen would display all 4 rows properly i.e., no need to scroll up and down.

Thanks!

Every since Firefox updated, I have not been able to list on my Ebay store. I can list on my phone and if I am using Chrome, but not Firefox. I need to be able to work on my Ebay account. Please advise what I can do. I keep getting an error message from Ebay This is the error message:

Skip to main content Well, this is embarrassing. We're sorry, but the listing tool isn't working right this second. Please try again later. Go to Seller hub Page Copyright © 1995-2026 eBay Inc. All Rights Reserved. Accessibility, User Agreement, Privacy, Consumer Health Data, Payments Terms of Use, Cookies, CA Privacy Notice, Your Privacy Choices and AdChoice

When I search for something it shows up in English, but some text under the result is French as shown in the picture. I use latest Firefox with Google search engine, and I have all settings in Google set to English, And same for Firefox settings

While I have a Mozilla account, I typically am not signed-in when I use Firefox. I have noticed that when I do sign-in, extensions that I have removed while not signed-in are automatically reinstalled and stay installed when I sign out. Apparently the extensions were installed prior to signing-in sometime in the past; removing the extensions while signed-in seems to remove them for good. As good an idea as this may seem (?), I need this to stop. Any ideas? I am not intentionally backing-up or syncing anything.

Hi all,

After the last update the former Mozilla Test Pilot "Snooze Tabs" isn't working for me any more, I tell a tab to snooze and it just stays where it is. https://addons.mozilla.org/en-GB/firefox/addon/snoozetabs/

I've tried running with addons disabled and then running with addons active again and the behaviour is the same. It's the same behaviour whether I run from the toolbar or the context menu.

I'm presuming this problem is related to Firefox update mechanics. Any suggestions for how to get this working again please?

Cheers :)