Firefox Support Forum

I discovered by coincidence that the add-ons are disabled if you choose never to save history in the Tools / Options menu. That cannot be the intention! Is this a bug?

Previously, Firefox had the option of clearing history on exit while the add-ons were still working, which I think is a much better option! (Or is this option still available? I can not find him.)

Basically i noticed that whenever i installed adblock or any other addons they don't show up in the top right bar as icon and even if i have them enabled they do not work, i searched a bit and it seems to be an old issue that was present with some older version of firefox, is somebody currently experiecing this?

After following all the suggestions found by searching video autoplay, Firefox currently still autoplays videos with the sound muted. This is in websites other than those like YouTube, such as news websites and the like. What I REALLY want is to COMPLETELY PREVENT automatic playback of any of these videos, and if necessary, whitelist domains like YouTube to allow autoplay. Is this even feasible?

I downloaded a malicious add-ons extension called "YouTube to MP3 Convert Button" by "Firefox user 6248547". All it did was open a video conversion website, which worked for the first video I tried (with alot of popups) but the second video I tried, it redirected me to a fake Firefox update page. As soon as I tried to cancel it, a login popup kept appearing and all my open tabs immediately went haywire trying to do some kind of redirect, and I it would not let me click on anything. I quickly ended the process to force close the browser, restarted Firefox and cleared my cache and uninstalled the extension. I am concerned about what kind of malware this may have installed on my machine. I reported this user over a month ago, but it is still available on the add-on page, and other people also commented about it having malware. Any suggestions?

I am using Firefox version 68.0.1 on my laptop with Ubuntu 18.04LTS. Browser is Google.uk Every time I start Firefox it gives two homepages instead of one. This means if I start typing something too quickly - some of the type goes on the first homepage and some on the second ! I find this very annoying.

Hello. I've followed a bunch of suggestions from this Forum and elsewhere, but nothing seems to work. My main Firefox menu is stuck in Japanese as are the context menus and pop ups. Others are in English. I've uninstalled Firefox and reinstalled with English version. All settings (about:config, etc) are set to English, don't have Japanese included as additional language or anywhere else. Help please, it's driving me crazy...

Using Firefox 66.0.2 (64 bit) on a Macbook pro OS 10.14.4. Firefox has been my default browser for years but this issue has appeared since the last update of Firefox. When Firefox is opened I get three tabs: one for my home page (Duckduck go), one for Ghostery settings, and one for Youtube HD settings. If I close Ghostery and YTHD the same thing will occur the next time Firefox is opened. At first I thought that the preferences to Ghostery and YTHD needed to be set (or reset), but these changes are not updated. I checked preferences of Ghostery and YTHD upon opening Firefox (when the additional tabs open) and preferences are not updated? Have no idea why this change is happening.

My home page is now set to (http://securedsearch.lavasoft.com/?pr=vmn&id=webcompa&ent=hp_WCYID10420__190321) when i went to options my Homepage and new windows option is disabled!!! I cant change any thing, i even uninstalled the software from windows and checked for unwanted adons in firefox and found none...

I want to delete some fixed items from the bookmarks menu e.g. Show all bookmarks, other bookmarks etc.. I found some css that was supposed to do it but it does not work.

My Addons are working okay, however when I look at the about:addons page the list only shows blank spaces where addons should be, only a blue highlight shows if I click on each addon.

This is the same for my Plugins and Themes.

I have tried deleting some files in my profile as suggested by others on here with similar problems but none work.

I had a system crash, probably with Firefox opened.

After restarting PC and starting Firefox, most of the addons I have had lost all of their settings and were reset to default - Tampermonkey lost all the scripts I had installed, uBlock lost all settings and rules, etc. Weirdly some extensions kept portions of their settings, like TreeTabs saved tree structure despite also getting reset to default.

Additionally Firefox also got its own settings reset to default, while the tabs from my session and bookmarks were saved.

Is there any way to recover addon and Firefox settings, is there any backup of them?

Hello, I have a new install of Firefox 65 on Xubuntu 18.04. Very frustratingly, I cannot select any text in the address bar, for instance to type a new web address. This applies to both:

-- trying to click or double-click; nothing happens; --also, dragging the mouse to select text has no effect.

I CAN place the mouse at the end of the text, backspace and erase text, and retype a new address, but this is laborious.

I have tried restarting in safe mode: the problem still exists in safe mode.

I tried installing a different browser to see if that one would have the same problems: it did not.

Any ideas? This is clearly not normal behavior and makes firefox very difficult to use. Any help is much appreciated!

MSI GE72 2QF Apache Pro notebook (stock) Windows 10 Pro Firefox 63.0.3

I recently reinstalled Windows 10 and Firefox. Before the reinstall, unchecking this box had an immediate visible effect. Now, as can be seen in the screenshot, it doesn't.

So far I've tried: - "refreshing" Firefox to defaults and unchecking the box again, - going into "about:config" and changing the value of "browser.display.use_document_fonts" to "0"

Neither of these things worked.

On my other two computers, one of which was bought new less than three weeks ago, unchecking the box does what it's supposed to do.

I'm currently using Firefox Quantum 64.0.2. Basically, I'd like the X that lets me close a tab with just a click to stay visible. Currently, it's only visible on the active tab. Is there an add-on, a tweak in about:config, or some userChrome.css code available to keep that X visible all the time on all the tabs?

I am trying to turn off my cache settings.

The instructiuons given tell us to set 'network.http.use-cache in about:config.

I have tried that, and that Preference name no longer exists.

How is this achieved?

I need this for Automation Testing. Currently, cached data casuses tests to fail.

We are currently having to role back to FireFox ESR 52.9 from the latest Quantum build of FireFox 60.3.0. Due to the fact that this version utilizes WebGl 2. Our older systems will not render one of the educational games we utilize in the our School District any longer due to the fact that Quantum uses WebGl 2 instead WebGl 1. We have tested and verified that ESR 52.9 renders the game properly.

I have been trying to disable the automatic update in utilizing the user.js file and the cfg file. The computers are apart of the domain. From what I have read only new user profiles will get the new user.js settings while all existing profiles will retain the old settings so we plan on reimaging these computers so all existing profiles will be wiped.

I have also seen users block the updates by changing the Host File which we will not do. Some sites state create a profile folder in the defaults folder other show place the user.js file in the pref folder. So I am lost at this point. I have followed this guide as well:

https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Enterprise_deployment_before_60#Changes_Over_Time

I have placed the 00_admin-prefs.js with the exact settings shown and have the mozilla.cfg file in the same folder as the js. both are in the defaults\pref

When trying to run FireFox I am am not getting:

Failed to read the configuration file. Please contact your Administrator. (I am the Admin). My domain creds give me admin privileges on all computers.

I know this folder also holds the channel-pref.js so I am not sure if I can add what I need to that file.

If someone would please help me determine what is going on. Why wont firefox copy the either a user.js file or utilize the cfg file I created to each new profile that gets created when logging into the computer.

Hello, i started using Linux (Debian stretch) and after a few days i realized that in Firefox (63.0.1 64bit) can no longer use the deleting key (not "Delete", but one that is used to erase text from right to left) to go back in history on a tab. I found i can use the keyboard shortcut Ctrl+right arrow, but this one is much less handy than single key which i am missing.

Second problem is that when i click back button by mouse, then it do not scroll the page to the spot where i was, but the scrollbar is on the top of the page which is not convenient.

These two things seems like a small issue, but it making quick browsing uneasy. Please how to fix these issues?

--- Yes, in about:config, i had to set "browser.backspace_action " to be "0", unsure why on Linux they do it differently.

We have an application that was integrated with several other legacy applications in the organization. We started upgrading our application to HTML 5 standards to make it work with all modern browsers such as Firefox, Chrome and Edge. Now the problem is that, our application has redirect links to 3 to 5 legacy applications that were coded for IE 7 and no where in the migration path. When the users click on these links while working on our application, Firefox opens a blank page, making them as blockers for our application uplift. 1) is there a way to force a link to open in IE while the parent page is launched using Firefox ? I have seen this link : https://stackoverflow.com/questions/43615678/force-a-link-in-i-e-to-open-in-firefox , but this is for the opposite requirement...open Firefox from IE. 2) how do you run applications requiring .cab files on Firefox ? if there is an answer for this, we don't need to worry about #1.

Thanks.

I'm using a conference application called Zoom. There are URLs that can be clicked to open the application and let jump in right away to the meeting that ID existed in the URL. For example: https://zoom.us/j/1234567890

But none of the URLs I tried actually opens the application.

Or for instance when I try to login to my account, the app opens Firefox which after logging in through the web, redirects me to zoommtg://zoom.us/google?code=XXX and Firefox shows a message saying "The address wasn’t understood".

I tried the following boolean key on the about:config page for Firefox: network.protocol-handler.expose.zoommtg=false

And I tried assigning true instead of false, but this didn't do the trick.

My Firefox has the following key/value network.protocol-handler.expose-all;true

I understand that this configuration makes me not need to set the previous one as it overrides it.

From within my ~/.local/share/applications $ cat Zoom.desktop [Desktop Entry] Name=Zoom Comment=Zoom Video Conference Exec=/usr/bin/zoom %U Icon=Zoom.png Terminal=false Type=Application Encoding=UTF-8 Categories=Network;Application; StartupWMClass=zoom MimeType=x-scheme-handler/zoommtg;application/x-zoom; X-KDE-Protocols=zoommtg Name[en_US]=Zoom $ cat mimeapps.list

[Default Applications] text/html=firefox_firefox.desktop x-scheme-handler/http=firefox_firefox.desktop x-scheme-handler/https=firefox_firefox.desktop x-scheme-handler/about=firefox_firefox.desktop x-scheme-handler/unknown=firefox_firefox.desktop x-scheme-handler/zoommtg=Zoom.desktop application/x-zoom=Zoom.desktop

How can I configure Firefox to redirect the Zoom URLs to the application, so I can login to my account and use meeting links to join the meetings instantly ?

I uploaded a screenshot to show that Zoom doesn't show in Firefox's Applications list, but I'm not sure it isn't showing up !

A Firefox Quantum theme I applied has become stuck as the default. I have removed all other installed themes (the broken theme wasn't listed to uninstall). Any window I open applies the theme again, as well as restarting the browser. It seems to have bugged my Firefox Sync as well, as it applies on all of my devices.

Here are some screenshots of the issue, because the forum image uploader didn't appear to work for me.

https://imgur.com/a/K2YmLQI