Firefox Community Forum

Hello,

Clicking to open Firefox gives me the following error message:

Error. Platform version '120.0.1' is not compatible with miniVersion >= 120.0 maxVersion <= 120.0

Can't open firefox! I'm running Windows 11 version 10.0.22631 Build 22631

Thanks! Julie

I've always liked the Firefox New Tab page, with Pocket, and until today, DarkReader plugin has always worked. But now it says that it can't because the page is protected.

I tried the solution to use bookmarklets, suggested in https://support.mozilla.org/en-US/questions/1350781, but it didn't have any effect (https://sanketmehta7.github.io/DarkMode-JS-BookMark/

If I can't find a solution, I'll just ditch Pocket, and use Google as my first page, or something. Or maybe ditch Firefox, which doesn't seem to think that dark mode is important. I don't like being blinded by the light.

Hello!

I often log in to a service ticketing website to help my customers. Before emailing them I must reference the service ticket number somewhere in the email, but this is very difficult to do in Firefox. If I inspect the element this is what I see:

<em unselectable="on" style="width: 2161px;">Service Ticket #55474079</em>

I understand the unselectable attribute is on but even if I try setting it to off or deleting it all together the problem remains. Moreover, I've tried it in several browsers (Chrome, Edge, DuckDuckGo) and it works fine without any extensions or tricks.

In other words: only Firefox keeps me from selecting this very important piece of info.

Any help would be very much appreciated! I looked up help articles but nothing similar to my case. I did find an extension for the browser but I am afraid to try it due to security reasons.

Thank you!

BMET1.

Within the last few days, I've noticed I'm losing functionality in certain online apps through the Firefox browser.

When I'm on Instagram, I can't check direct messages: the function stalls out without resolving.

In Gmail, I'm unable to embed an image in an email. I can attach it like normal, but the embed button doesn't respond.

In Starry AI, I'm unable to use any menu options at all, I'm stuck at being logged into the account and can't logout, check my settings, or request help. I receive this message: "Application error: a client-side exception has occurred (see the browser console for more information)"

When I follow up on this, I get this pop-up message: Resource of last-private-context-exit is missing a browsingContextID or innerWindowId attribute resource-command.js:917:13

   _getTargetForWatcherResource resource://devtools/shared/commands/resource/resource-command.js:917
   _onResourceAvailable resource://devtools/shared/commands/resource/resource-command.js:649
   _emit resource://devtools/shared/event-emitter.js:242
   emit resource://devtools/shared/event-emitter.js:186
   emit resource://devtools/shared/event-emitter.js:330
   onPacket resource://devtools/shared/protocol/Front.js:348
   onPacket resource://devtools/client/devtools-client.js:458
   send resource://devtools/shared/transport/local-transport.js:67
   makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103
   makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103

<empty string> 2 Sync encountered an error - see about:sync-log for the log file. policies.sys.mjs:972:15

   resetFileLog resource://services-sync/policies.sys.mjs:972

InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable AboutNewTabParent.sys.mjs:33

   handleEvent resource:///actors/AboutNewTabParent.sys.mjs:33
   swapDocShells chrome://global/content/elements/browser-custom-element.js:1590
   _swapBrowserDocShells chrome://browser/content/tabbrowser.js:4757
   swapBrowsersAndCloseOther chrome://browser/content/tabbrowser.js:4642
   swapBrowsers chrome://browser/content/browser.js:1771

The resource at “https://r2.starryai.com/results/1034412570/d60e9d93-bb04-4ab0-b333-011e35eb54d1.webp” was blocked by OpaqueResponseBlocking. Reason: “after sniff: content-type declares image/video/audio, but sniffing fails”. AbortError: Actor 'Conduits' destroyed before query 'RuntimeMessage' was resolved 2 ConduitsParent.sys.mjs:378 Some cookies are misusing the recommended “SameSite“ attribute 4

What can I do to fix this issue?

I installed the Firefox browser (version 113.0.2 (64-bit)) onto a new PC running Windows 11. When attempting to clean up the Firefox cache with another utility, I noticed that the amount of space recovered was much smaller than expected. When I tried to check my profile using the Troubleshooting Information page (to open the folder) I received a message that the location was not available. I double checked with Windows Explorer and this was the case. Searching for "cache2" in Explorer located the folder/directory in a different location.

The Firefox Profile Folder should be in this location, according to Firefox's Troubleshooting Information page (anonymized information in square brackets):

C:\Users\[username]\AppData\Roaming\Mozilla\Firefox\Profiles\[character string 1].[profile name]

The best I can tell, the actual Profile Folder created in Windows 11 is located here:

C:\Users\[username]\AppData\Local\Packages\Mozilla.Firefox_[character string 2]\LocalCache\Roaming\Mozilla\Firefox\Profiles\[character string 1].[profile name]

The cache folder for the profile is located here:

C:\Users\[username]\AppData\Local\Packages\Mozilla.Firefox_[character string 2]\LocalCache\Local\Mozilla\Firefox\Profiles\[character string 1].[profile name]\cache2\entries

I am not sure if this situation is unique to me, or if this is a common occurrence with Windows 11.

The use of the Packages folder may be the result of installing an application that is not fully "Windows 11-native" or it may just be the new way Windows deals with some applications. I am not sure if the data in character string 2 is consistent, or if it is a unique string created by Windows when Firefox was installed.

If I go to the Settings and clear data, the folder that is a sub-folder of Packages is cleared, so Firefox "knows" where the data is, but the Troubleshooting Information page is confused.

If this is a common occurrence, a tweak to this page in a future release would be helpful. If it is a rare occurrence, a help article may be, well, helpful.

Thanks.

Hi

Well Firefox did it again. I had tabs on the bottom where I wanted them and they broke this again in the update I just got.

Any idea how to move them back down to the bottom? This is the userchrome.css coding I was using that worked fine before the update

@import url(userChrome-color_bookmark_folders_Proton89.css);

/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/tabs_on_bottom.css made available under Mozilla Public License v. 2.0 See the above repository for updates as well as full license text. */

/* Modify to change window drag space width */ /* Use tabs_on_bottom_menubar_on_top_patch.css if you have menubar permanently enabled and want it on top

• /

/* IMPORTANT */ /* Get window_control_placeholder_support.css Window controls will be all wrong without it. Additionally on Linux, you may need to get: linux_gtk_window_control_patch.css

• /

root{ --uc-titlebar-padding: 0px; }

@media (-moz-os-version: windows-win10){

root[sizemode="maximized"][tabsintitlebar]{ --uc-titlebar-padding: 8px }

}

1. toolbar-menubar[autohide="true"] > .titlebar-buttonbox-container,
2. TabsToolbar > .titlebar-buttonbox-container{

position: fixed; display: block; top: var(--uc-titlebar-padding,0px); right:0; height: 35px; } /* Mac specific. You should set that font-smoothing pref to true if you are on any platform where window controls are on left */ @supports -moz-bool-pref("layout.css.osx-font-smoothing.enabled"){

root{ --uc-titlebar-padding: 0px !important }

.titlebar-buttonbox-container{ left:0; right: unset !important; } }

root[uidensity="compact"] #TabsToolbar > .titlebar-buttonbox-container{ height: 30px }

1. toolbar-menubar[inactive] > .titlebar-buttonbox-container{ opacity: 0 }

1. navigator-toolbox{ padding-top: var(--uc-titlebar-padding,0px) !important; }

.titlebar-buttonbox-container > .titlebar-buttonbox{ height: 100%; }

1. titlebar{

-moz-box-ordinal-group: 2; -moz-appearance: none !important; --tabs-navbar-shadow-size: 0px; }

.titlebar-placeholder,

1. TabsToolbar .titlebar-spacer{ display: none; }

/* Also hide the toolbox bottom border which isn't at bottom with this setup */

1. navigator-toolbox::after{ display: none !important; }

@media (-moz-gtk-csd-close-button){ .titlebar-button{ -moz-box-orient: vertical } }

/* These exist only for compatibility with autohide-tabstoolbar.css */ toolbox#navigator-toolbox > toolbar#nav-bar.browser-toolbar{ animation: none; }

1. navigator-toolbox:hover #TabsToolbar{ animation: slidein ease-out 48ms 1 }

/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/tabs_on_bottom_menubar_on_top_patch.css made available under Mozilla Public License v. 2.0 See the above repository for updates as well as full license text. */

/* Menubar on top patch - use with tabs_on_bottom.css */ /* Only really useful if menubar is ALWAYS visible */

root{ --uc-window-control-width: 0px !important }

1. navigator-toolbox{ padding-top: calc(29px + var(--uc-titlebar-padding,0px)) !important }

1. toolbar-menubar{

position: fixed; display: flex; top: var(--uc-titlebar-padding,0px); height: 25px; width: 100%; overflow: hidden; }

1. toolbar-menubar > .titlebar-buttonbox-container{ height: 29px; order: 100; }

1. toolbar-menubar > [flex]{ flex-grow: 100; }
2. toolbar-menubar > spacer[flex]{

order: 99; flex-grow: 1; min-width: var(--uc-window-drag-space-width,20px); }

1. toolbar-menubar .titlebar-button{ padding: 2px 17px !important; }

1. toolbar-menubar .toolbarbutton-1 { --toolbarbutton-inner-padding: 3px }

/* TABS: height */*|*:root { --tab-toolbar-navbar-overlap: 0px !important; --tab-min-height: 20px !important; --tab-min-width: 80px !important;

1. tabbrowser-tabs {

width: 100vw !important; }

1. main-window:not([chromehidden*="toolbar"]) #navigator-toolbox {padding-bottom: var(--tab-min-height) !important;}

.tab-background { border-radius: 8px 8px 0px 0px !important; border-image: none !important; } .tab-line { display: none; }

.tab-close-button { color: red!important; }

Hello,

This has been very challenging for more. I have searched the internet forms I cannot find the solution to this issue, please help! When I first bought this computer I tried to install Firefox it crashed and said that there was another instance of Firefox running. Now I tried again to reinstall Firefox and I am getting a new error, which is: Your Firefox profile cannot be loaded. It maybe missing or inaccessible. I followed one of the forms on this site. I did all that was in the form, IE: I tried to recreate profiles through the profile manager. I also tried to clear the cache in the cache folder. I also tried to move the profile folder via the profile manager. Nothing has worked. Please help me I am very disparate. Also so if necessary is there a way to get live support. thank you :)

Hello! I have used Firefox on and off so I don't have a time frame of when this would have started exactly, but I have had some random completely black screens on both of my monitors dating back to at least 2-3 weeks ago that can only be fixed by powering down the entire PC. I've reinstalled my (NVIDIA) GPU drivers, rearranged display-port cables and just about anything before finally finding a fix, switching to edge. So far I've gone a week without black screening when with Firefox I'd get around 4 give or take a week (some days getting to 3 alone). I don't know what could cause it but I have noticed it only happens when first starting a video. Mostly YouTube but other video sites seem to have also caused it occasionally, I would just like to know what could be causing this, as I do prefer Firefox vastly and would like to switch back as soon as I can.

Will provide anything else as necessary!

This problem exists ONLY on Firefox. I vary search engines, from DuckDuckGo to Presearch and Startpage depending on the search results I get.

For no apparent reason I will get a "suspended connection" message on Startpage while using the Firefox browser. I have included both the link and a screenshot of the problematic page. The page will open perfectly several times, and then suddenly, in the same session, if I open a new Startpage tab, this message will appear. While the suspended connection message is visible in Firefox / Startpage, I will try Startpage in Edge, Opera, Chrome and Midori, and they all open to the Starpage beautifully.

I am using the Firefox 125.0.3 browser, I have cleared caches and cookies, and run full malware scans, with zero negative results, and yet this problem persists. It is sporadic, and does not occur on a predictable basis. It occurs whether the Mozilla VPN is on or not, and switching from on to off or off to on changes nothing, even after refreshing the page.

I am assuming that this is a Firefox issue, as the problem does not occur on other browsers

I can easily switch browsers and / or search engines, but Firefox in conjuction with Startpage is my preferred combo. I just find it frustrating in that I cannot fix it myself.

So....Ehhhh...what's up doc?

https://www.startpage.com/sp/captcha-block#?bc=US&bi=QuadraNet&be=a2667ecaaf93ae9c091acfff4cebeacc&bds_t=1715638671T77bc1f599823650a2bba749db91bb9c806807a1edc0a34414bf50516dbe0e125&bds_s=dd88ea12048c4efdb6fb4d366c52ae8f&lui=english&cat=web&language=english&t=night&cmd=gen_page

like the subject says the video on disney plus is very choppy/blurry/not 4k like it should be can u guys look into it? the video is blocky and blurry on firefox but not on chrome for some reason and id like to fix it soon

I've searched for answers. I tried the About:config and changing some settings to false and others to true as suggested (e.g. browser.search.context.loadInBackground), etc., and of course I have the option chosen under settings.

This is a new computer. My old computer would switch to the new tab when I right click it, but this new one won't.

Any latest fixes?

Hi, Please advise how to remove, disable, delete, block the new added "Your browser is being managed by your organization." to my Settings page. I'm home user .Also Please know that this is generating "FALSE FINGERPRINT CERTIFICATES" thank you

Hey there,

I have been using the arrow keys to scroll pages more and more often and was wondering if there is a way to increase / decrease the speed when holding down the arrow keys to scroll the page?

Thanks in advance. :)

Hi @all,

I reinstalled my computer from scratch with Windows 11, before this reinstallation I had Windows 10. Now I noticed that with the newest Firefox version 109 (that I also had before with Windows 10) and Windows 11 my multirow bookmarks toolbar doesn´t work anymore. Before the reinstallation it worked with the following code:

/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/multi-row_bookmarks.css made available under Mozilla Public License v. 2.0
See the above repository for updates as well as full license text. */

/* Makes bookmarks toolbar span multiple rows */

#PersonalToolbar{
  --multirow-bmb-n-rows: 3; /* Control how many rows are shown before scrolling */
  --multirow-bmb-row-margin: 2px; /* Control how much spacing is between rows */
  max-height: none !important;
}

#PlacesToolbar > hbox{ 
  display: block;
  width: 100vw;
}

#PlacesToolbarItems{
  display: flex;
  flex-wrap: wrap;
  /* --uc-bm-padding is defined in autohide_bookmarks_toolbar.css */
  max-height: calc(var(--multirow-bmb-n-rows) * (5px + 1em + (2 * (var(--multirow-bmb-row-margin) + var(--uc-bm-padding,2px))))) !important;
  overflow-y:auto;
  scrollbar-color: var(--lwt-accent-color) var(--toolbar-bgcolor) ;
  scrollbar-width: thin;
}

/* Hide the all-bookmarks button */
#PlacesChevron{ display: none }

/* Add some spacing between rows */
#PlacesToolbarItems > .bookmark-item{ margin: var(--multirow-bmb-row-margin) 3px !important;  }

I already tried some other codes that I found in the internet but none of them worked. I have this code in the file userChrome.css, this file is in a chrome folder and this folder is in my profile folder. Can anybody tell me what I have to do to make the multirow bookmarks toolbar working again?

Best regards heusmich

I have been watching SBS OnDemand successfully until today. I now receive a consistent Video Playback error on any video using Firefox Ver 124.0.1.  I do not have an Adblocker installed. (Windows 11 Pro 23H2).  I do have AVG Internet Security installed.  I installed no apps. I turned off Enhanced Protection for sbs.com.au in Firefox but the problem persists. The problem does not occur on Chrome.

I have a Lenovo ThinkPad X1 Yoga Gen 6 (20XY005MGE) with Win11 Pro.

All of a sudden, Firefox does not play any sound. I notice that it does not show up in the volume mixer. I tried:

• this solution: https://support.mozilla.org/de/questions/1278299
• Reboot the PC
• Uninstall and reinstall Firefox
• Deactivate all Extensions
• I worked my way through the manual pages (none of which mentions Firefox missing in the volume mixer)

Youtube does not play sounds, the Spotify page notices that it cannot play sound (the spotify App for Windows works fine, though). News sites (tagesschau.de / video, deutschlandfunk.de / audio) play the video, but no sound.

I had the problem a few months ago already but I cannot recall the solution :(

Thanks for helpful hints!

I have Yahoo as my home page and usually search from it starting out. I noticed, however, after the last update or two in the last week that when I hit search, it opens the search results in a new tab. It didn't use to do this, but I can't find any Firefox option to make the searches stay in the existing tab. Can anyone help with this? I don't think it's Yahoo's settings, because I'm not signed into it. It seems like the Firefox update created this new behavior.

Recently I activated 2FA on Firefox. I scanned the barcode by Google authenticator, to make it my code generator.

I'm now trying to enter Firefox on my laptop. After typing my password, when I try to enter one of the generated Google Authenticator codes, I constantly get a response "Invalid code".

I had to use one of the backup codes (out of the 8), and managed to enter my account on the laptop, but none of the logins and passwords were found there (it's empty).

My first question is why does Firefox reject the codes received from Google Authenticator (do I have to cancel my 2FA and define it once again? but I did everything by the book, with GA, and it seemed fine the other day).

My second question: I finally managed to enter my account with one of the eight backup code. Why are there no passwords etc? Aren't they automatically drawn from my usual (existing) account?

The laptop runs Win 10. I installed the 2FA on my main computer, which runs Win 11.

Thank you very much in advance, Eldad