Firefox Support Forum

Just recently (Jan. 21st), I tried to share my screen while in a Google Meet and received the message, "You must grant permission in order to screenshare." I don't receive this message when I try it in Google Chrome. I've been able to share my screen in Google Meet when using Firefox in the past, but don't remember the last time I did. So, not sure when this issue really started. I would like to continue to use Firefox for this function, so any assistance is greatly appreciated.

I have found a few pages about address rewriting; how do I disable them all ? - searching single word into google (type "keyw" in about:config to disable it) - hiding http when not using https - trying to add "www" and ".com" around a single word when the word did not resolve

I consider most of them as security issues for various reasons.

And when editting an URL, I want firefox to keep showing the full url as it was invoqued; not add https randomly, or removing http other days. And the more I disable some, the more new ones appear.

Hello! After various problems with my MacBook I had to delete everything from my hard drive. After installing BigSur 11.2.3 and restoring things from my TimeMachine backup all my Firefox bookmarks got lost. I understood how I can restore them but I don't know what file to look for in the TimeMachine backup that should contain my bookmarks... I would also like to restore my passwords if possible. Anyone can help?

I've been using new fonts to customize my firefox, but I found that the fonts I installed won't show up in the dropdown menu in preferences, I have to create a new profile to let the new ones do.

I don't want to change my profiles from time to time, so I turned to userContent.css, but I found it either cannot cover enough contents, or cover too much, causing some icons to break.

So the only way to change font for me is to find a way to let the newly installed fonts to show up properly in my current profile, but no matter I restart my browser or my computer they don't. The fonts I have must be read at the time I create a profile, and I guess the list is stored in either somewhere in my profile or under the firefox program folder.

I made every effort to search for it but failed, all I know now is it's not in any text file under profile folder, I wonder if anyone can help me with locating the list of fonts. My firefox version is 84.0.2 on MacOS Catalina 10.15.7.

[[This old answer|https://support.mozilla.org/en-US/questions/1219521]] describes on how to get it back .. though for me there is no "Add to Address Bar" button.

Using Firefox 78.9.0esr (64-bit) (Default firefox from debian bullseye)

I've been struggling today with accessing two systems on my work laptop. As I'm an administrator on both sites, I've been purposely using "private mode" browser sessions in Firefox (my default and fav) but I was surprised to see that the private mode appears to be "save" some of the session data from those systems - at least temporarily until I close all of those windows entirely?

I log in to one of those corporate sites with a username + password, then attempt to login to the other one in a separate tab, but it immediately attempts to auto-login me in with the credentials from the first site (which doesn't work as both sites require a different username/password for security reasons). I tried several combinations: I used separate private browser windows (instead of tabs) and the same thing happens. It's like it shares data across the instances? I also tried the reverse - logging into the 2nd system first on a fresh instance, then login to the first, and the same thing happens with a similar "invalid login" error.

Maybe its something weird about the auth on our network, like SSO? ...

I have noticed similar though where I've had other, multiple private browser sessions open on my personal laptop and even though I've closed one of them, activity from the site I closed has continued to happen in the background because the other private windows remained open ...

In order to use my preferred browser, MetaGer, I have to change the default search engine every time I open Firefox. After setting the default search engine, Firefox reverts to Google after relaunch. How do I fix this? I'm using Firefox 85 with OS 10.13.6 High Sierra. Thanks

I recently installed the Firefox Multi Account Containers extension. I am wondering if tabs opened in "No Container" are in their own container. If I open youtube.com in a container called Google, it cannot read cookies from the Shopping container, or any other container, but can it read the cookies in "No Container"? I would like to use the "No Container" as my default container, but if information can be shared between "No Container" and other containers, then I'll have to recreate the Personal Container, and never use the "No Container" option.

In new version of Firefox (89) Default theme is installed but refuses to load properly it looks like the Light theme, when i am switching it to Light theme and after Default theme there is no difference it looks like Light theme anyway...Can you help me with it?

Hello, its nice to have possibility to ask this questions. Few days ago something strange happens and system was hunged, i didn't do anything unusual, just web serfing, so, i had to reset system and was some astonishin because that rather rare accident. After reload i saw that my browser theme reset to default, and as remember account wasn't loginned as usual, after while i noticed that all logins and password just, disappeared... I very hope that just crash and not any hackers... And here is some pity because many of logins and passwords i mere don't remember.. What can i do in this case? Will be grateful for any help.

I've been using Firefox with Virgin Media's TV Go https://virgintvgo.virginmedia.com/en.html for quite a while without a problem. After the latest update I got the message to update the browser to the latest version and restart. I've tried talking to Virgin about it but been given the runaround by them - surprise. I've tried other browsers, Safari, Chrome, but the quality of the stream is poor compared to what I was getting with Firefox. Has anyone got any ideas? Any hopes?

Thanks

so my firefox-esr 78.6.1esr is loading so long after startup, not like the program is loading, the connection is being loaded up.

i tried with fresh install with firefox, works fine but my profile even with safe mode without addons doesnt work. i know the connection isnt working because of this error JavaScript error: moz-extension://0a5524bc-116e-4a36-a72d-db0a83069847/h0-main.js, line 1: Error: Could not establish connection. Receiving end does not exist.

and

JavaScript error: resource://gre/modules/XULStore.jsm, line 66: Error: Can't find profile directory. JavaScript error: resource://gre/modules/XULStore.jsm, line 66: Error: Can't find profile directory. JavaScript error: resource://gre/modules/XULStore.jsm, line 66: Error: Can't find profile directory. JavaScript error: resource://gre/modules/XULStore.jsm, line 66: Error: Can't find profile directory.

1. 1. 1. !!! [Child][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost

Extension error: Error while loading 'jar:file:///usr/lib/firefox/browser/omni.ja!/chrome/browser/search-extensions/twitter/manifest.json' (NS_ERROR_FILE_NOT_FOUND) resource://gre/modules/Extension.jsm:570 :: readJSON/</<@resource://gre/modules/Extension.jsm:570:20 onStopRequest@resource://gre/modules/NetUtil.jsm:128:18 </p>

JavaScript error: resource://gre/modules/URIFixup.jsm, line 281: NS_ERROR_FAILURE: Should pass a non-null uri Log warning: The log 'Services.Common.RESTRequest' is configured to use the preference 'services.common.log.logger.rest.request' - you must adjust the level by setting this preference, not by using the level setter

not sure what wrong with this

and of couse i have custom user.js

user_pref("network.connectivity-service.enabled", false); user_pref("browser.newtabpage.enabled", false); user_pref("browser.newtab.preload", false); user_pref("browser.search.geoip.url", ""); user_pref("app.update.enabled", false); user_pref("extensions.update.enabled", false); user_pref("app.update.auto", false); user_pref("extensions.update.autoUpdateDefault", false); user_pref("app.update.service.enabled", false); user_pref("app.update.staging.enabled", false); user_pref("app.update.silent", false); user_pref("extensions.getAddons.cache.enabled", false); user_pref("lightweightThemes.update.enabled", false); user_pref("browser.search.update", false); user_pref("dom.ipc.plugins.flash.subprocess.crashreporter.enabled", false); user_pref("dom.ipc.plugins.reportCrashURL", false); user_pref("extensions.getAddons.showPane", false); user_pref("extensions.webservice.discoverURL", ""); user_pref("toolkit.telemetry.unified", false); user_pref("toolkit.telemetry.enabled", false); user_pref("toolkit.telemetry.server", "data:,"); user_pref("toolkit.telemetry.archive.enabled", false); user_pref("toolkit.telemetry.cachedClientID", ""); user_pref("toolkit.telemetry.newProfilePing.enabled", false); user_pref("toolkit.telemetry.shutdownPingSender.enabled", false); user_pref("toolkit.telemetry.updatePing.enabled", false); user_pref("toolkit.telemetry.bhrPing.enabled", false); user_pref("toolkit.telemetry.firstShutdownPing.enabled", false); user_pref("toolkit.telemetry.hybridContent.enabled", false); user_pref("datareporting.healthreport.uploadEnabled", false); user_pref("datareporting.policy.dataSubmissionEnabled", false); user_pref("breakpad.reportURL", ""); user_pref("browser.tabs.crashReporting.sendReport", false); user_pref("browser.crashReports.unsubmittedCheck.enabled", false); user_pref("browser.crashReports.unsubmittedCheck.autoSubmit", false); user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false); user_pref("browser.aboutHomeSnippets.updateUrl", "data:,"); user_pref("browser.chrome.errorReporter.enabled", false); user_pref("browser.chrome.errorReporter.submitUrl", ""); user_pref("extensions.blocklist.enabled", false); user_pref("extensions.blocklist.url", ""); user_pref("services.blocklist.update_enabled", false); user_pref("services.blocklist.onecrl.collection", ""); user_pref("services.blocklist.addons.collection", ""); user_pref("services.blocklist.plugins.collection", ""); user_pref("services.blocklist.gfx.collection", ""); user_pref("browser.safebrowsing.malware.enabled", false); user_pref("browser.safebrowsing.phishing.enabled", false); user_pref("browser.safebrowsing.downloads.enabled", false); user_pref("browser.safebrowsing.downloads.remote.block_potentially_unwanted", false); user_pref("browser.safebrowsing.downloads.remote.block_uncommon", false); user_pref("browser.safebrowsing.downloads.remote.block_dangerous", false); user_pref("browser.safebrowsing.downloads.remote.block_dangerous_host", false); user_pref("browser.safebrowsing.provider.google.updateURL", ""); user_pref("browser.safebrowsing.provider.google.gethashURL", ""); user_pref("browser.safebrowsing.provider.google4.updateURL", ""); user_pref("browser.safebrowsing.provider.google4.gethashURL", ""); user_pref("browser.safebrowsing.downloads.remote.enabled", false); user_pref("browser.safebrowsing.downloads.remote.url", ""); user_pref("browser.safebrowsing.provider.google.reportURL", ""); user_pref("browser.safebrowsing.reportPhishURL", ""); user_pref("browser.safebrowsing.provider.google4.reportURL", ""); user_pref("browser.safebrowsing.provider.google.reportMalwareMistakeURL", ""); user_pref("browser.safebrowsing.provider.google.reportPhishMistakeURL", ""); user_pref("browser.safebrowsing.provider.google4.reportMalwareMistakeURL", ""); user_pref("browser.safebrowsing.provider.google4.reportPhishMistakeURL", ""); user_pref("browser.safebrowsing.allowOverride", false); user_pref("browser.safebrowsing.provider.google4.dataSharing.enabled", false); user_pref("browser.safebrowsing.provider.google4.dataSharingURL", ""); user_pref("browser.safebrowsing.blockedURIs.enabled", false); user_pref("browser.safebrowsing.provider.mozilla.gethashURL", ""); user_pref("browser.safebrowsing.provider.mozilla.updateURL", ""); user_pref("network.allow-experiments", false); user_pref("app.normandy.enabled", false); user_pref("app.normandy.api_url", ""); user_pref("app.shield.optoutstudies.enabled", false); user_pref("shield.savant.enabled", false); user_pref("extensions.systemAddon.update.enabled", false); user_pref("extensions.systemAddon.update.url", ""); user_pref("browser.ping-centre.telemetry", false); user_pref("extensions.pocket.enabled", false); user_pref("browser.library.activity-stream.enabled", false); user_pref("extensions.screenshots.disabled", false); user_pref("extensions.screenshots.upload-disabled", true); user_pref("browser.onboarding.enabled", false); user_pref("extensions.formautofill.addresses.enabled", false); user_pref("extensions.formautofill.available", "off"); user_pref("extensions.formautofill.creditCards.enabled", false); user_pref("extensions.formautofill.heuristics.enabled", false); user_pref("extensions.webcompat-reporter.enabled", false); user_pref("network.prefetch-next", false); user_pref("network.dns.disablePrefetch", true); user_pref("network.dns.disablePrefetchFromHTTPS", true); user_pref("network.predictor.enabled", false); user_pref("captivedetect.canonicalURL", ""); user_pref("network.captive-portal-service.enabled", false); user_pref("browser.send_pings", false); user_pref("browser.send_pings.require_same_host", true); user_pref("network.protocol-handler.external.ms-windows-store", false); user_pref("network.predictor.enable-prefetch", false); user_pref("network.trr.mode", 0); user_pref("network.trr.bootstrapAddress", ""); user_pref("network.trr.uri", ""); user_pref("network.file.disable_unc_paths", true); user_pref("browser.search.suggest.enabled", false); user_pref("browser.urlbar.suggest.searches", false); user_pref("browser.urlbar.userMadeSearchSuggestionsChoice", true); user_pref("browser.urlbar.usepreloadedtopurls.enabled", false); user_pref("browser.urlbar.speculativeConnect.enabled", false); user_pref("security.ssl.errorReporting.automatic", false); user_pref("security.ssl.errorReporting.enabled", false); user_pref("security.ssl.errorReporting.url", ""); user_pref("dom.push.enabled", false); user_pref("dom.push.connection.enabled", false); user_pref("dom.push.serverURL", ""); user_pref("dom.push.userAgentID", ""); user_pref("beacon.enabled", false); user_pref("browser.uitour.enabled", false); user_pref("browser.uitour.url", ""); user_pref("permissions.manager.defaultsUrl", ""); user_pref("webchannel.allowObject.urlWhitelist", ""); user_pref("browser.startup.homepage_override.mstone", "ignore"); user_pref("startup.homepage_welcome_url", ""); user_pref("startup.homepage_welcome_url.additional", ""); user_pref("startup.homepage_override_url", ""); user_pref("media.gmp-gmpopenh264.autoupdate", false); user_pref("browser.shell.shortcutFavicons", false); user_pref("media.gmp-eme-adobe.autoupdate", false); user_pref("media.gmp-manager.url", "data:text/plain,"); user_pref("media.gmp-manager.url.override", "data:text/plain,"); user_pref("media.gmp-manager.updateEnabled", false); user_pref("media.gmp-widevinecdm.autoupdate", false); user_pref("devtools.webide.autoinstallADBHelper", false);

and with some chrome extensions but only 3-row tabs, different color on unloaded tabs and show X on hover thats all my usechrome.css

if u need any more logs i am open to share them. how do i fix this problem?

Please I would like to know Firefox ESR old version is for large organizations like universities and businesses? Please I would like to know Firefox ESR new version is for small businesses?

In the screenshot I've provided you can plainly see that "Provide search suggestions" is unchecked, yes the browser continues to provide search suggestions based on my search history.

How to make this stop?

Firefox 78.5.0esr OS X 10.11.6

Ctrl+o did open the sidebar, but ctrl+shift+b don't Show/hide the Bookmarks toolbar, on Win10 firefox84 works fine. I check systems keyboard shortcut and ctrl+shift+b isn't registered at all.

There used to be separate "reload" and "stop" buttons available that I can pick via "Customize" menu and put next to the address bar. The archived solution suggested here (https://support.mozilla.org/en-US/questions/1203285) doesn't or does no longer work. Now what? I have the lastest version of firefox (85).

Firefox has been my favourite browser for years but I am about to uninstall and kick it to the curb!!!

Every time I want to attach/insert an image (on many different sites/platforms/apps) it freezes ~ I have to shut down and start again, losing whatever I have been working on. I have uninstalled and reinstalled a few times and have checked ~ all is up to date.

Any advice would be greatly appreciated!

Thanks a mil!

I don't have any account icon in my tool bar and no option to sync. I try to login/sign up to sync through this page https://www.mozilla.org/en-US/firefox/sync/ and the loading icon just spins and spins and spins and spins and spins for.ev.er. Please help. I just want my browser to sync on different devices.

For the last few updates of firefox I haven't been able to restore closed tabs with the regular keyboard shortcut (believe it was ctrl+alt+t and now ctrl+shift+t). The shortcut simply does nothing at all. It is frustrating as sometimes I close a tab by accident and then I have to go through the whole process clicking to find it instead of being able to bring it back up in half the time using the shortcut. I am on firefox 90.0.