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I have followed the steps in the "Prevent Firefox from starting automatically" article: https://support.mozilla.org/en-US/kb/firefox-starts-automatically-when-i-restart-window

But Firefox keeps starting automatically when I restart my computer. Attached is an image of how the settings are now.

What should I do? This is a bit annoying. I don't use Firefox as my main browser but I work as a customer success manager for an online platform and always need to do some tests on Firefox, but I don't want it to start automatically when I turn on my computer.

I'll for instructions.

Thank you

The excellent answer here no longer works in Firefox 117.0 on MacOS. Unfortunately, that post is archived, so I cannot post an updated solution there. I would greatly appreciate if a moderator could add this post in the linked article, or at least link from there over to here.

For Firefox 117, the code needs to be modified slightly (two lines at the top need to be removed): ```

  //
  function ConfigJS() { Services.obs.addObserver(this, 'chrome-document-global-created', false); }
  ConfigJS.prototype = {
   observe: function (aSubject) { aSubject.addEventListener('DOMContentLoaded', this, {once: true}); },
   handleEvent: function (aEvent) {
     let document = aEvent.originalTarget; let window = document.defaultView; let location = window.location;
     if (/^(chrome:(?!\/\/(global\/content\/commonDialog|browser\/content\/webext-panels)\.x?html)|about:(?!blank))/i.test(location.href)) {
       if (window._gBrowser) {
         let keys = ["key_find", "key_findAgain", "key_findPrevious", "key_gotoHistory", "addBookmarkAsKb", "bookmarkAllTabsKb", "showAllHistoryKb", "manBookmarkKb", "viewBookmarksToolbarKb", "key_savePage", "key_search", "key_search2", "focusURLBar", "focusURLBar2", "key_openDownloads", "openFileKb", "key_reload_skip_cache", "key_viewSource", "key_viewInfo", "key_privatebrowsing", "key_quitApplication", "context-bookmarklink"];
         for (var i=0; i < keys.length; i++) {
            let keyCommand = window.document.getElementById(keys[i]);
            if (keyCommand != undefined) { 
               keyCommand.removeAttribute("command"); 
               keyCommand.removeAttribute("key"); 
               keyCommand.removeAttribute("modifiers"); 
               keyCommand.removeAttribute("oncommand"); 
               keyCommand.removeAttribute("data-l10n-id"); 
            }
         }
       }
     }
   }
  };
  if (!Services.appinfo.inSafeMode) { new ConfigJS(); }

```

I am trying to set up a Shopify page. It was working fine until today. The page is now redirecting me to the sign in page every time I attempt an action. Shopify support says that they were able to perform these actions on my account from their end. Also, I was able to complete the tasks from Microsoft Edge. Any suggestions.

The problem is that even after I've tinkered with the about:config settings to prevent Firefox from restoring my previous session after a crash, it just won't listen! The changes I make in about:config don't seem to save, and every time Firefox crashes, it happily reloads my old tabs and windows.

Your assistance would be greatly appreciated!

OS: Arch Linux DE: Gnome 44

Have had this problem for a couple of years now, across dozens of Firefox updates. Decided to finally make a post since have not been able to find anything online.

Normally not too much of an issue as I can edit on a different computer through Firefox Sync (or through the Bookmarks manager), just posting to see if anyone else has seen this before.

If I open a Bookmarks Toolbar folder, then right-click a bookmark to edit it, the contextual menu appears behind the open folder dropdown menu.

Issue persists even if I reset Firefox, or even completely uninstall / remove ALL its bits and pieces, reboot, and do a clean install.

Since I am on a Mac, I use the AppCleaner app from FreeMacSoft to completely remove an app.

This happens only on one of my two Macs. Have never seen this behavior on any other Mac (I work on dozens for work). Both my Macs also have Win 10 installs through BootCamp and those two also behave normally. I use Firefox Sync across 4 Firefox installs (2 Mac OS and 2 Win 10), an iPhone, and an iPad.

Screenshot enclosed below. Feel free to ask for any other info you may need. I recognize this may not be a Firefox issue. There seems to be a funky interaction between my install of Mac OS and Firefox. This occurs only with Firefox. All other apps exhibit normal menu behaviors.

Tech details: Firefox 117.0 Mac OS Catalina 10.15.7 running on mid 2012 15" MacBook Pro with 1 TB SSD and 16 GB RAM

Many Thanks!

I occasionally use a site (www.zoomcare.com) which does not work properly with Firefox (I've been using Microsoft Edge (Windows 10) to access it). The problem comes when I try to login. I enter my username and password, and that brings up a blank page that does not redirect to anything, so I'm stuck.

Just out of curiousity, I was looking through Advanced Settings, and found security.csp.enableNavigateTo. It has been set to false, but when I set it to true, I am able to successfully login (I still go to the blank page, but after a brief pause, I'm redirected to a logged-in page).

I'd like to know something about the security implications of enabling this property. Is it a bad idea? (Not knowing, I've set it back to false and will continue to use Edge for now).

When looking at the ExtensionSettings page for Firefox or Chrome they both use an example that shows the registry key Software\Policies\Mozilla\Firefox\ExtensionSettings (REG_MULTI_SZ) being set to a long JSON string with every extension ID and the settings for that particular ID. For example...

{

 "*": {
   "blocked_install_message": "Custom error message.",
   "install_sources": ["https://yourwebsite.com/*"],
   "installation_mode": "blocked",
   "allowed_types": ["extension"]
 },
 "uBlock0@raymondhill.net": {
   "installation_mode": "force_installed",
   "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi"
 },
 "https-everywhere@eff.org": {
   "installation_mode": "allowed"
 }

}

The problem with this method is that if I am installing an extension, and I overwrite what already exists in Software\Policies\Mozilla\Firefox\ExtensionSettings then all of those other settings get removed. So even if I am a non-malicious actor and just make a mistake with my installer I can easily delete every other extension's settings. Instead what I have to do is during install I have to read the current value of Software\Policies\Mozilla\Firefox\ExtensionSettings and then insert my extension's settings into the JSON blob.

So the examples that Firefox and Chrome provides do of course work, however they do not make very much sense to me. Why would it be formatted this way since all of those are additional key/value pairs and that is exactly what the registry excels at storing. So why put all of those into a single key/value instead of breaking them into multiple?

Additionally breaking them a part into multiple key/value pairs does work! So if instead of the example above I were to split them into multiple key value pairs it works just fine!

Software\Policies\Mozilla\Firefox\ExtensionSettings

   uBlock0@raymondhill.net
       "installation_mode": "force_installed",
       "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi"

So knowing that this way with multiple key/value pairs works why am I bothering to ask this question at all instead of just doing it the way that makes sense to me? Well the issue is that by breaking it up into multiple key value pairs it actually overrides the other method and makes it so that all those registry settings are ignored. So it doesn't delete them but it still leaves me with nearly the exact same problem.

While I believe "my" way is superior because it uses the registry in a more common sense route, if that is not what the majority of extension developers do then it doesn't matter and I should be conforming to the other way.

As I am typing this question up I did realize just how hard/annoying it is to properly format and make it clear and digestible what the multi key/value format of the registry would look like instead of being a JSON string. So perhaps that is the reason why all the documentation puts it all as one JSON string?

Hello all,

When I'm using my Firefox browser spell checking is working only with English language. Polish is my native language and I want use this function to Polish as well and set Polish as my default language. I tried to adding/removing other languages than Polish from options, setting higher priority to Polish language, how ever I have no result with that. Please help, will highly appreciate. Thanks in advance.

Best Regards, Adrian

I have Firefox installed on two PCs. I see the option to add "Recommended by Pocket" under Settings/Home, but on the other one I don't. Screen shots of both are attached. I have completely uninstalled, cleaned up all Firefox files and re-installed Firefox multiple times on the PC where I don't see the Pocket option but nothing changes. Also gone into about:config and tried making changes from there. I want the Pocket recommendations to show on the Firefox Home page for both PCs.

Thanks

I'm getting daily warning notifications from Mcafee about some virus. Don't even have Mcafee. When I go to Settings -> Privacy & Security -> Notifications, there is no Settings button to modify push notifications.

I was having trouble switching and logging out of Twitter so I thought I could just clear site cookies to make it work, but I weirdly discovered "about:preferences -> Manage Data -> Remove Selected / Remove All Shown" has no effect. i.e. after clearing, when I open up manage data again, they are still there. I did not try "Clear Data" above it because I was afraid of clearing out all my logins.

I reinstalled my computer several weeks ago and current profile was directly copied from my last machine, so this might be a possible cause? Could someone be so kind to help me get remove cookies and hopefully twitter back to work? Thank you in advance.

When i go to google.com and enter search query the tab "hangs" for about 10 seconds before the next page starts to load Same issue on 2 separate machines (1 intel laptop, 1 amd pc) both on newly installed windows 11 pro

what i've tried: safe mode, disabling hardware acceleration, disabling antivirus (kaspersky, without any browser plugins or safe browsing) , but the issue persists

here's the video: https://youtu.be/qMY-38z_TC0

I use an translator extension for firefox for russian so I do not need this integrated tool and it's annoying to see it everytime I open a russian page. Please help me, I don't know what the source is of this translator but I can tell it's not from an extensions as I deleted every extension and tried, not worked.

In Edit > Settings > Search > Search Bar I see a radio button labeled: "Use the address bar for search and navigation"

How do I turn that function completely off?

Hi, I'm having this problem of videos not playing in some websites for a long time now, not even sure how long anymore. It started on Twitter, where I get the error message "The media could not be played". Some time after I got it on Instagram where I get the message "Sorry, we're having trouble with playing this video. Learn More". More recently I subscribed to the Nebula service and got a message there as well "The media could not be loaded". Differently from other people I don't have this problem on Youtube, over there everything has always been fine. I have tried every workaround on this, I have seen many tutorial videos and articles and tried everything and nothing worked. Running on Windows 10

Some things I have tried: -cleared cookies and cache; -disabled all add-ons, removed them even; -checked if firefox was updated; -checked if graphics card drives were updated; -opened websites on incognito mode, nothing changed there; -started Firefox in troubleshoot mode, nothing changed there; -disabled graphics hardware acceleration in Firefox; -enabled autoplay; -reset firefox; -changed my pc actually, installed firefox, got the error and reset firefox again;

Could anyone help me with this? Is this normal?

I am using some custom SVG icons for my bookmark folders. I had my userChrome.css setup to set the icons based on the folder names, as well as color the icons with whatever the theme color was. This userChrome.css file worked fine in Firefox 116, but no longer works in 117. Now a couple of the icons are invisible, and the rest of them are black instead of the expected purple color from my theme. Can anyone help?

toolbarbutton.bookmark-item{

 -moz-context-properties: fill, fill-opacity, stroke !important;
 stroke: var(--toolbarbutton-icon-fill) !important;

}

.bookmark-item[container="true"] [label="Finance"] { list-style-image: url("data:image/svg+xml,%3Csvg width='18' height='18' viewBox='0 0 48 48' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 13H44V37H4V13Z' stroke='context-stroke' stroke-width='4' stroke-linejoin='round'/%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M4 21C8.41828 21 12 17.4183 12 13H4V21Z' stroke='context-stroke' stroke-width='4' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M4 29C8.41828 29 12 32.5817 12 37H4V29Z' stroke='context-stroke' stroke-width='4' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M44 29V37H36C36 32.5817 39.5817 29 44 29Z' stroke='context-stroke' stroke-width='4' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M44 21C39.5817 21 36 17.4183 36 13H44V21Z' stroke='context-stroke' stroke-width='4' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M24 31C26.7614 31 29 28.3137 29 25C29 21.6863 26.7614 19 24 19C21.2386 19 19 21.6863 19 25C19 28.3137 21.2386 31 24 31Z' stroke='context-stroke' stroke-width='4' stroke-linejoin='round'/%3E%3C/svg%3E") !important; }

.bookmark-item[container="true"] [label="Health"] { list-style-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 15 15' fill='context-fill' fill-opacity='context-fill-opacity' xmlns='http://www.w3.org/2000/svg' width='16' height='16'%3E%3Cpath d='M7.5 13.5l-.354.354a.5.5 0 00.708 0L7.5 13.5zM1.536 7.536l-.354.353.354-.353zm5-5l-.354.353.354-.353zM7.5 3.5l-.354.354a.5.5 0 00.708 0L7.5 3.5zm.964-.964l-.353-.354.353.354zm-.61 10.61L1.889 7.182l-.707.707 5.964 5.965.708-.708zm5.257-5.964l-5.965 5.964.708.708 5.964-5.965-.707-.707zM6.182 2.889l.964.965.708-.708-.965-.964-.707.707zm1.672.965l.964-.965-.707-.707-.965.964.708.708zM10.964 1c-1.07 0-2.096.425-2.853 1.182l.707.707A3.037 3.037 0 0110.964 2V1zM14 5.036c0 .805-.32 1.577-.89 2.146l.708.707A4.036 4.036 0 0015 5.036h-1zm1 0A4.036 4.036 0 0010.964 1v1A3.036 3.036 0 0114 5.036h1zM4.036 2c.805 0 1.577.32 2.146.89l.707-.708A4.036 4.036 0 004.036 1v1zM1 5.036A3.036 3.036 0 014.036 2V1A4.036 4.036 0 000 5.036h1zm.89 2.146A3.035 3.035 0 011 5.036H0c0 1.07.425 2.096 1.182 2.853l.707-.707z'%3E%3C/path%3E%3C/svg%3E") !important; }

.bookmark-item[container="true"] [label="Homelab"] { list-style-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 15 15' fill='context-fill' fill-opacity='context-fill-opacity' xmlns='http://www.w3.org/2000/svg' width='16' height='16'%3E%3Cpath d='M7.5.5l.325-.38a.5.5 0 00-.65 0L7.5.5zm-7 6l-.325-.38L0 6.27v.23h.5zm5 8v.5a.5.5 0 00.5-.5h-.5zm4 0H9a.5.5 0 00.5.5v-.5zm5-8h.5v-.23l-.175-.15-.325.38zM1.5 15h4v-1h-4v1zm13.325-8.88l-7-6-.65.76 7 6 .65-.76zm-7.65-6l-7 6 .65.76 7-6-.65-.76zM6 14.5v-3H5v3h1zm3-3v3h1v-3H9zm.5 3.5h4v-1h-4v1zm5.5-1.5v-7h-1v7h1zm-15-7v7h1v-7H0zM7.5 10A1.5 1.5 0 019 11.5h1A2.5 2.5 0 007.5 9v1zm0-1A2.5 2.5 0 005 11.5h1A1.5 1.5 0 017.5 10V9zm6 6a1.5 1.5 0 001.5-1.5h-1a.5.5 0 01-.5.5v1zm-12-1a.5.5 0 01-.5-.5H0A1.5 1.5 0 001.5 15v-1z'%3E%3C/path%3E%3C/svg%3E") !important; }

.bookmark-item[container="true"] [label="Privacy"] { list-style-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 15 15' fill='none' xmlns='http://www.w3.org/2000/svg' width='16' height='16'%3E%3Cpath d='M12.587 3.513a6.03 6.03 0 01.818 3.745v.75c0 .788.205 1.563.595 2.247M4.483 6.508c0-.795.313-1.557.871-2.119a2.963 2.963 0 012.103-.877c.789 0 1.545.315 2.103.877.558.562.871 1.324.871 2.12v.748c0 1.621.522 3.198 1.487 4.495m-4.46-5.244v1.498A10.542 10.542 0 009.315 14M4.483 9.505A13.559 13.559 0 005.821 14m-3.643-1.498a16.63 16.63 0 01-.669-5.244V6.51a6.028 6.028 0 01.79-3.002 5.97 5.97 0 012.177-2.2 5.914 5.914 0 015.955-.004' stroke='context-stroke' stroke-linecap='square' stroke-linejoin='round'%3E%3C/path%3E%3C/svg%3E") !important; }

.bookmark-item[container="true"] [label="Gaming"] { list-style-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 15 15' fill='none' xmlns='http://www.w3.org/2000/svg' width='18' height='18'%3E%3Cpath d='M9.817 11.133l-.447.224.447-.224zM9.5 10.5l.447-.224A.5.5 0 009.5 10v.5zm-4 0V10a.5.5 0 00-.447.276l.447.224zm8.5-5v4.528h1V5.5h-1zm-3.736 5.41l-.317-.634-.894.448.316.633.895-.447zM9.5 10h-4v1h4v-1zm-4.447.276l-.317.634.894.447.317-.633-.894-.448zM1 10.028V5.5H0v4.528h1zM3.5 3h8V2h-8v1zm-.528 9A1.972 1.972 0 011 10.028H0A2.972 2.972 0 002.972 13v-1zm9.056 0c-.747 0-1.43-.422-1.764-1.09l-.894.447A2.972 2.972 0 0012.027 13v-1zM14 10.028A1.972 1.972 0 0112.028 12v1A2.972 2.972 0 0015 10.028h-1zm-9.264.882A1.972 1.972 0 012.972 12v1a2.972 2.972 0 002.658-1.643l-.894-.447zM15 5.5A3.5 3.5 0 0011.5 2v1A2.5 2.5 0 0114 5.5h1zm-14 0A2.5 2.5 0 013.5 3V2A3.5 3.5 0 000 5.5h1zM3 7h3V6H3v1zm1-2v3h1V5H4zm7 1h1V5h-1v1zM9 8h1V7H9v1z' fill='context-fill'%3E%3C/path%3E%3C/svg%3E") !important; }

.bookmark-item[container="true"] [label="Firefox"] { list-style-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='16' height='16' viewBox='0 0 1000 1000' xml:space='preserve' fill='context-fill' fill-opacity='context-fill-opacity' %3E%3Cpath d='M503.8,975c-103.2,0-195.2-27.4-275.9-82.3C147.1,837.8,87,765.2,47.6,674.7C26.5,627,14.3,572.1,11,510.1s1.5-122.6,14.2-181.8s33-116.1,60.7-170.6c27.7-54.5,60.3-98.7,97.9-132.6l-6,153.7c4-5.1,16.4-7.9,37.2-8.5c20.8-0.5,33.5,2.3,38.3,8.5c15.3-29.5,44.6-54.7,87.8-75.5c43.2-20.8,86-31.5,128.2-32.3c-19.7,16.4-41.5,43.5-65.4,81.2c-23.9,37.7-34.5,67.5-32,89.4c9.1,2.9,20.5,5.4,34.2,7.4c13.7,2,25.2,3.4,34.5,4.1c9.3,0.7,21.7,1.5,37.2,2.2c15.5,0.7,24.7,1.3,27.6,1.6c5.5,1.8,7.2,10.1,5.2,24.9c-2,14.8-7.6,28.5-16.7,41.3c-1.8,2.6-4.8,5.9-9,10.1c-4.2,4.2-14.5,10.7-30.9,19.4c-16.4,8.8-34.8,14.9-55.2,18.6l8.2,103.4l-76-36.6c-6.6,15.7-7.9,30.5-4.1,44.6c3.8,14,10.4,26.2,19.7,36.4c9.3,10.2,21.2,17.8,35.8,22.7s29.4,6.1,44.3,3.6c18.6-3.3,36.5-9.6,53.6-18.9c17.1-9.3,32.4-17.5,45.7-24.6c13.3-7.1,26.7-10.3,40.2-9.6c22.2,1.5,38.6,7.5,48.9,18c10.4,10.6,13.9,22.4,10.7,35.5c-0.4,0.7-0.8,1.7-1.4,3c-0.5,1.3-2.1,3.6-4.6,6.8c-2.6,3.3-5.8,6.1-9.8,8.5c-4,2.4-9.8,4.3-17.2,5.7c-7.5,1.5-16,1.6-25.4,0.5c-21.9,34.6-48.2,59.3-79,74.1c-30.8,14.8-69,20.1-114.6,16.1c27,22.2,56.6,37.3,88.9,45.1c32.3,7.8,63,8.9,92.2,3.3c29.2-5.7,57.3-15.1,84.5-28.4c27.2-13.3,50.5-29.3,70-47.9c19.5-18.6,34.2-37.6,44-56.9c15.7-33.2,22.8-68.3,21.3-105.3c-1.5-37-8.3-71.4-20.5-103.1c-12.2-31.7-26.5-54.5-42.9-68.4c31.7,13.9,56.7,28.3,74.9,43.5c18.2,15.1,32.3,35.6,42.1,61.5c5.5-62-5-124.5-31.4-187.6C770.2,153.4,732,101.6,682,61.1c96.6,28.1,171.7,79,225.3,152.9s81.1,168.2,82.6,283c0.7,46.3-6.7,92.8-22.1,139.5s-38,90.1-67.5,130.2c-29.5,40.1-64,75.8-103.4,107.2c-39.4,31.4-84.5,56.1-135.4,74.1C610.7,966,558.1,975,503.8,975L503.8,975z'/%3E%3C/svg%3E") !important; }

I’m having trouble moving firefox to a new computer. I copy the files, expecting to see my existing set up with bookmarks, extensions, and passwords, and I get no response, no errors, just completely fresh firefox.

Both systems are on arch linux and both running Firefox 117.0. I completely close both firefox. I copy ~/.mozilla/firefox to an ext4 thumb drive from my old computer. on the new computer, I delete the existing ~/.mozilla/firefox. I copy the files from the thumb drive to /firefox/. I restart firefox. unmodified firefox

I’ve also tried chowing the files. and also chmoding 700 and 755 (advice from old stackoverflow threads) ive tried chowing and chmoding. Each time i restart the whole process for posterity. Still no response

I’m dumbfounded as to why it’s not working, and I don’t even know where to look now

Hello!

The problem is I'm getting the "Unexpected response from server" message when trying to open any web page. Could you try to solve this without me updating the android version? My phone is not new and quick in the terms of performance so I do not update the OC. Please find the error examples, broeser version and my phone's system info attached in a form of screenshots.

Thank you Regards, Denis