Firefox Support Forum

When I try to open Firefox I am getting this error message: Error: platform version '124.0.1' is not compatible with minVersion >= 124.0 maxVersion <= 124.0. Does anyone know how I can fix this? Deb PS I need simple instructions, I'm not terrible techy.

Hey, so, I've seen this question a couple times when I searched, but (a) there didn't seem to be any solution and (b) they were all regarding Macs and I'm on Windows 11 v 23H2. I keep getting bubbles saying that Firefox wasn't able to check for updates- not that it couldn't download or install updates, but it couldn't search for one. I also did the "about Firefox" thing and it gives me the same message. Both of these have been going on for a couple days and I have attempted restarting Firefox multiple times and did a manual update [125.0.1 (64-bit)] just in case there was a problem there. Now, I've tried the tips from the other threads (turning off the proxy, checking any anti-update policies, and checking the add.update.url in the config settings) with no luck. So in an effort to either bump the question or get any Windows oriented answers... Thanks muchly

I have a very good PC (5800X3D, 7900XT, 32GB DDR4 3600), but Firefox (either the normal, canary and nightly version) can't play smoothly any 4K video (like the Borderlands trailer: https://www.youtube.com/watch?v=lU_NKNZljoQ ). 1440 and lower resolutions are fine, as are 4K videos on Chrome and Edge. FWIW, my CPU during 4K playback is barely used (1-2%), and my GPU's video codec (VCE) is used by around a third. Disabling HW accel makes things better, as it still stutters but it's (barely) passable. I already tried creating a new profile, but still it's the same.

Hi, I have a link in my website that opens a file in another desktop program. The link looks like this: openwith://C:/path/to/file, but after update to the latest Firefox version (v122.0) the second colon from the link is for some reason removed, resulting in a path like this: openwith://C/path/to/file. This is a problem because the path it now tries to open doesn't exist. Is this a deliberate feature in the new Firefox version or is it a bug? If it is a bug will it be fixed? It still works fine in v121.0.

I tried clearing cache and temp files. I tried a new profile. I tried a fresh install without logging in on account. Tried disabling all addons, running in safemode and incognito. Nothing works.

When opening in Chrome, it works as always. Same computer.

When I try to play a video on Firefox desktop, it takes it a long time to load. Once it has loaded, whenever I pause it for more than a few seconds, or if I try to skip around the video (either by clicking around in the loaded section of the progress bar or using +/- seconds buttons), the video begins buffering again before the video resumes. This makes it extremely difficult and frustrating to watch anything that requires me to pause, rewind, or fast forward. I've noticed this issue affect multiple video viewing sites, such as YouTube, Vimeo, and Netflix. My roommate also uses Firefox, but doesn't have this issue, so I know it's not a problem with my internet. I thought it might be a problem with my computer, but I tried to replicate the issue in Chrome and everything worked fine there. The issue has persisted almost a week. I have:

• Rebooted my computer several times
• Deleted my history/cache
• Disabled my extensions
• Turned off Java scripts in firefox (this disabled my ability to load sites like YouTube completely, so I turned it back on)
• Updated my computer
• Updated my graphics drivers
• Refreshed firefox
• Uninstalled and reinstalled firefox (and rebooted my computer)
• Uninstalled and reinstalled firefox AND deleted all the data it stored on my computer (and rebooted my computer)

I am currently using version 123.0.1 of Firefox. My OS is Windows 10 22H2.

Google search no longer works on Firefox. Other browsers have no problems. Changing the default search engine on Firefox works (eg Bing), BUT. It can now find Google Maps, but Google Maps cannot find a location, because it uses a Google search. I tried the fix in about:config, but it had no effect.

YouTube all of a sudden started to slow down and only be able to load videos fast enough in 360p resolution, I tried watching YouTube on Microsoft edge and YouTube handled 1080p easily there, I have cleared the cash and made sure my Firefox and Windows are up to date and still the issue persists.

this only seams to occur on YouTube as amazon prime and speed test works without issues

Using the arm64 version of Firefox on a Surface Pro X causes several graphical issues. These issues started either with a update of Firefox or drivers.

This topic has already been reported, please see here for more information and documentation: Reddit: https://www.reddit.com/r/firefox/comments/182iojx/firefox_arm64_graphical_problems_on_surface_pro_x/ Mozilla Connect: https://connect.mozilla.org/t5/discussions/firefox-arm64-graphical-problems-on-surface-pro-x/m-p/52086

What can be done to report this issue and help it getting fixed?

Firefox displays text on the .xml page as html code instead of rendering is as normal text. The layout and images on the page look as they should.

There is nothing wrong with the page, as it is rendered perfectly in Chrome.

In addition, this page doesn't display at all on the phone. When I click on the link it asks me to download it and then asks me which app I want to open it with - instead of simply rendering the page.

I have seen some old threads on this topic, it looks like this issue haven't been resolved for few years.

My question is not just about fixing it in my browser but at the root cause. This page is the RSS feed of my podcast which many people want to access and many use Firefox as their browser. Unless I tell everyone to use Chrome instead.

Can someone help? thanks.

Whenever I attempt to watch something on any streaming service, I get an error message from the streaming service and a note from Firefox saying "The WidevineCdm plugin has crashed." I have tried to solve this problem a number of ways, but have unable to find a solution.

My best guess is the problem is due to the most recent WidevineCdm update, as in the plugins settings the most recent update for the plugin was on 10/21/23, which is shortly before I first noticed the problem. I did test out various streaming platforms on other computer browsers (Chrome and Microsoft Edge) — they gave the same website errors as I got on Firefox, but those browsers did not indicate the cause or suggest which plugin failed. I additionally tested out desktop apps for some of the streaming platforms; they work fine without any issues, but unfortunately the main streaming platform I use doesn't have a desktop app and only works in browser.

My computer is a Lenovo Yoga 9i, it's running Windows 11, and everything is up-to-date.

The methods I have tried to fix this issue with, to no avail: - submitted crash reports - toggling the "play DRM restricted content" options in Firefox, and toggling whether or not the WidevineCdm was activated, closing the browser between each toggle of options - clearing Firefox's cache - running Firefox in troubleshooting mode to make sure it wasn't a different extension interfering with it - tried running Firefox in compatibility mode - tried to find support from the people who made WidevineCdm, but apparently they don't do end-user support - deleting the WidevineCdm manually from the program files for Firefox and Chrome (since Firefox says the plugin is from Google), and then reinstalling it via the chrome components page. This briefly lead to the message on the plugin page that WidevinceCdm would "begin installing shortly." It seemed frozen like that for a good while, but then I tried clicking the "check for updates" and that message disappeared, and it went back to crashing when I tried using a streaming service. - uninstalling both Chrome and Firefox, restarting the computer, then reinstalling both browsers

As far as I can tell, the plugin comes automatically installed in the browser, and there isn't an alternate plugin for decrypting DRM-restricted content. If there's a way to set the WidevineCdm to a previous version before the update that's crashing it, I haven't found it, but I am no expert in computers or coding, and my guess about it being caused by the recent update could be wrong too.

I'm at my wit's end here, any help fixing this problem is greatly appreciated.

I frequently open new tabs by right-clicking the current tab and choosing "New Tab" from the context menu. Naturally, I want to start typing a URL or search term.

But the focus/cursor/caret is nowhere and typing does nothing. I have to click on the address bar, and then I can type.

I'm not using New Tab Override and I have Firefox's new tab set to a blank page.

I tried disabling all my add-ons, but I still had the problem.

I tried setting new tab to the Firefox home page and for a short while I got a cursor in the address bar. But the problem returned after a few hours

Any clues on what might be wrong? Firefox version 120.0.1 (64-bit) on MacOS Ventura 13.5.1. Thanks!

(A similar problem is described here: https://support.mozilla.org/en-US/questions/1420220 -- but in my case this is not a container tab.)

~~~SOLVED~~~ Hello guys, this is about some..adults sites, i'm just getting loading error on the screen. Sorry if that's inappropriate. Also recently, youtube videos can't play at 1080p, only 720p, even tho i know the video it's 1080p.

Hey folks, hopefully you can help with this mysterious issue!

I've been running Firefox successfully on my Windows 10 PC for a long while now. Last night, for some reason it simply ceased to work. New windows and tabs would not load any content. I also couldn't access the Settings at all (clicking on Settings in the browser menu produces no results or feedback.)

Yesterday, I had Firefox open all day (I usually have my computer on all day), and it was working fine. Around 8 or 9pm, I first noticed that none of my open tabs were loading any content, and the tabs had the "loading" animation playing. New tabs would also not load any content. I assumed it was an internet issue as I did see my internet connection get disrupted once or twice. I did not see anything (apps, etc) on my PC updating.

This morning I found Firefox was still not loading anything, although my internet connection was fine. I tried opening Chrome, and it ran just fine. Everything else that it is internet or cloud based on my PC is running fine too. So it seems to be an issue just with Firefox.

I have listed my steps to troubleshoot below, but I want to note one weird thing I observed: Even when Firefox is closed, and Task Manager doesn't show any Firefox processes open, my PC seems to think Firefox is running. For ex. while trying to uninstall Firefox or delete certain files, I would get a warning to "close Firefox first" or "can't perform this action while app is running." After seeing these, I would again confirm that Firefox appears closed and Task Manager shows no related tasks.

My PC build: - Windows 10 Home, 64 bit - Version 20H2 at start of issue (updated to 21H2 during troubleshooting) - OS build: 19044.1526

Things I have tried for troubleshooting already: - I have WebRoot on my computer due to my job, and I asked our IT staff if they could see WebRoot blocking anything related to Firefox on their end. They said it was not. - Used "Firefox Refresh" - Uninstalled and reinstalled Firefox - Cleared app cache / app data - Updated Windows from 20H2 to 21H2

Note: This message was sent on a different computer & browser

Hi.

Using Windows 10. Suddenly, Mozilla gives the "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window" message. I've tried all steps listed on the help site except reinstalling Windows 10, as the comment made said this would require reinstalling programs that did not come pre-installed on my PC, which I don't want to do if possible. I have uninstalled Mozilla, and the install stalls at about 70% with the aforementioned error message. Any help would be greatly appreciated! Thanks.

Just now, after a massive and catastrophic SUPER-MELTDOWN-crash that arbitrarily decided to absolutely murder my day, ALL my tabs and windows and ALL history of "Recently Closed" tabs and windows is gone!

THIS IS COMPLETELY UNACCEPTABLE!

What is the reason for the existence of a SYNC feature if it isn't to MAKE SURE that a record of open tabs and windows is SECURELY maintained no matter how many times the application crashes, so that AT ALL TIMES, this information is kept INTACT, regardless of the state of the end users device? That is BY FAR the most important part of the sync feature! Are you telling me that there is no backup process of that information?

This is the kind of thing I never expected from you guys at Mozilla. I've been using Firefox for MANY years because I trust what you do. Today that trust has been SEVERELY and BRUTALLY wounded, most likely beyond repair...

I need you to fix this...

I need you to recover that information for me and I need you to make sure that what just happened could never, ever happen again unless God himself caused every digital storage unit on earth to disintegrate.

I cannot watch a video on youtube when it is in the process of being live streamed. I remember a time when I was able to, years ago, but I can't any longer. I'm not sure what has changed. I found an article that says to install the optional update called "Windows Media Pack" in apps and features, but no app with that name exists. It was only a year old solution, so I'm unsure of what changed so significantly. I just installed another optional windows update, and also updated the browser, but still doesn't work.

Edition Windows 10 Home Version 21H2 Installed on ‎09-‎Jun-‎20 OS build 19044.1466 Experience Windows Feature Experience Pack 120.2212.3920.0

Firefox: 97.0 (64-bit)

I booted into safe mode of Firefox and disabled all the extensions. I couldn't even boot the app, but now I can boot without being in safe mode, but if I close a tab, it crashes immediately. Or if I quit the app - it crashes.

AdapterVendorID: 0x106b Add-ons: reset-search-defaults%40mozilla.com:2.1.0,webcompat%40mozilla.org:28.0.1buildid20211210.021657,doh-rollout%40mozilla.org:2.0.0,formautofill%40mozilla.org:1.0.1,pictureinpicture%40mozilla.org:1.0.0,proxy-failover%40mozilla.com:1.0.2,screenshots%40mozilla.org:39.0.1,addons-search-detection%40mozilla.com:2.0.0,google%40search.mozilla.org:1.1,amazondotcom%40search.mozilla.org:1.3,wikipedia%40search.mozilla.org:1.1,bing%40search.mozilla.org:1.3,ddg%40search.mozilla.org:1.1,ebay%40search.mozilla.org:1.3,firefox-compact-dark%40mozilla.org:1.2 AvailablePhysicalMemory: 172670976 AvailableSwapMemory: 1045692416 BuildID: 20211218203254 ContentSandboxCapable: 1 ContentSandboxLevel: 3 CrashTime: 1641339399 DOMFissionEnabled: 1 DOMIPCEnabled: 1 ExperimentalFeatures: fission.autostart,media.videocontrols.picture-in-picture.allow-multiple InstallTime: 1640733686 MacAvailableMemorySysctl: 57 MacMemoryPressure: Normal MacMemoryPressureCriticalTime: Unset MacMemoryPressureNormalTime: 1641339386 MacMemoryPressureSysctl: 1 MacMemoryPressureWarningTime: Unset Notes: FP(D00-L1100-W00000000-T000) WR? WR+ GL Context? GL Context+ ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox PurgeablePhysicalMemory: 104349696 ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 16 StartupCrash: 0 StartupTime: 1641339386 TelemetryEnvironment: {"build":{"applicationId":"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}","applicationName":"Firefox","architecture":"aarch64","buildId":"20211218203254","version":"95.0.2","vendor":"Mozilla","displayVersion":"95.0.2","platformVersion":"95.0.2","xpcomAbi":"aarch64-gcc3","updaterAvailable":true},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":8192,"virtualMaxMB":null,"cpu":{"extensions":["hasNEON"]},"os":{"name":"Darwin","version":"21.1.0","locale":"en-US"},"hdd":{"profile":{"model":null,"revision":null,"type":null},"binary":{"model":null,"revision":null,"type":null},"system":{"model":null,"revision":null,"type":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"ContentBackend":"Skia","Headless":false,"EmbeddedInFirefoxReality":null,"adapters":[{"description":null,"vendorID":"0x106b","deviceID":null,"subsysID":null,"RAM":0,"driver":null,"driverVendor":null,"driverVersion":null,"driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":1440,"screenHeight":900,"scale":2}],"features":{"compositor":"webrender_software","hwCompositing":{"status":"disabled:FEATURE_FAILURE_COMP_PREF"},"gpuProcess":{"status":"unused"},"wrQualified":{"status":"available"},"webrender":{"status":"unavailable-no-hw-compositing"},"wrCompositor":{"status":"available"},"wrSoftware":{"status":"available"},"openglCompositing":{"status":"unavailable:FEATURE_FAILURE_OPENGL_NEED_HWCOMP"},"omtp":{"status":"unused"}}},"appleModelId":"MacBookAir10,1","hasWinPackageId":null},"settings":{"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":8,"fissionEnabled":true,"telemetryEnabled":false,"locale":"en-US","intl":{"requestedLocales":["en-US"],"availableLocales":["en-US"],"appLocales":["en-US"],"systemLocales":["en-US"],"regionalPrefsLocales":["en-US"],"acceptLanguages":["en-US","en"]},"update":{"channel":"release","enabled":true,"autoDownload":true,"background":true},"userPrefs":{"browser.search.region":"US","browser.search.widget.inNavBar":false,"browser.startup.homepage":"<user-set>","browser.startup.page":3,"browser.urlbar.quicksuggest.dataCollection.enabled":false,"browser.urlbar.suggest.quicksuggest.nonsponsored":true,"browser.urlbar.suggest.quicksuggest.sponsored":true,"layers.acceleration.disabled":true,"privacy.donottrackheader.enabled":true,"widget.content.allow-gtk-dark-theme":false,"widget.content.gtk-high-contrast.enabled":true},"sandbox":{"effectiveContentProcessLevel":3,"contentWin32kLockdownState":3},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":true,"defaultSearchEngine":"ddg-addon","defaultSearchEngineData":{"loadPath":"[other]addEngineWithDetails:ddg@search.mozilla.org","name":"DuckDuckGo","origin":"default","submissionURL":"https://duckduckgo.com/?t=ffsb&q="}},"profile":{"creationDate":18989,"resetDate":18996,"firstUseDate":18989},"addons":{"activeAddons":{"doh-rollout@mozilla.org":{"version":"2.0.0","scope":1,"type":"extension","updateDay":18979,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"This used to be a Mozilla add-on that supported the roll-out of DoH, but now only exists as a stub t","name":"DoH Roll-Out","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":18979},"formautofill@mozilla.org":{"version":"1.0.1","scope":1,"type":"extension","updateDay":18979,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":null,"name":"Form Autofill","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":18979},"pictureinpicture@mozilla.org":{"version":"1.0.0","scope":1,"type":"extension","updateDay":18979,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Fixes for web compatibility with Picture-in-Picture","name":"Picture-In-Picture","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":18979},"proxy-failover@mozilla.com":{"version":"1.0.2","scope":1,"type":"extension","updateDay":18979,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Direct Failover for system requests.","name":"Proxy Failover","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":18979},"screenshots@mozilla.org":{"version":"39.0.1","scope":1,"type":"extension","updateDay":18979,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Take clips and screenshots from the Web and save them temporarily or permanently.","name":"Firefox Screenshots","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":18979},"reset-search-defaults@mozilla.com":{"version":"2.1.0","scope":1,"type":"extension","updateDay":18996,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Ask the user if they would like to use a specified search engine as the default.","name":"Reset Search Defaults","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":18996,"signedState":3},"webcompat@mozilla.org":{"version":"28.0.1buildid20211210.021657","scope":1,"type":"extension","updateDay":18996,"isSystem":true,"isWebExtension":true,"multiprocessCompatible":true,"blocklisted":false,"description":"Urgent post-release fixes for web compatibility.","name":"Web Compatibility Interventions","userDisabled":false,"appDisabled":false,"foreignInstall":false,"hasBinaryComponents":false,"installDay":18996,"signedState":3}},"theme":{"id":"firefox-compact-dark@mozilla.org","blocklisted":false,"description":"A theme with a dark color scheme.","name":"Dark","userDisabled":false,"appDisabled":false,"version":"1.2","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":18996,"updateDay":18996},"activeGMPlugins":{"dummy-gmp":{"version":"0.1","userDisabled":false,"applyBackgroundUpdates":1}}},"experiments":{"bug-1690367-rollout-moving-webrtc-networking-functionality-into-i-release-87-100":{"branch":"active","type":"normandy-prefrollout","enrollmentId":"deee5207-5240-47f1-a661-69bdfdc07174"},"bug-1732206-rollout-fission-release-rollout-release-94-95":{"branch":"active","type":"normandy-prefrollout","enrollmentId":"bd1903ce-823e-4796-8f8c-7f2076775967"},"bug-1727384-pref-impact-study-for-total-cookie-protection-tcp-release-91-95":{"branch":"noop","type":"normandy-exp","enrollmentId":"909962d8-75ce-4b05-8ef5-98efc43496d3"}}} ThreadIdNameMapping: 6:"IPC I/O Parent",7:"Timer",10:"Socket Thread",11:"Permission",12:"JS Watchdog",20:"TaskController #5",18:"TaskController #3",19:"TaskController #4",17:"TaskController #2",21:"TaskController #6",16:"TaskController #1",15:"TaskController #0",22:"TaskController #7",23:"Cache2 I/O",24:"Cookie",26:"Worker Launcher",28:"WRWorker#0",46:"ImageIO",38:"WRWorkerLP#2",32:"WRWorker#4",34:"WRWorker#6",27:"Renderer",31:"WRWorker#3",36:"WRWorkerLP#0",30:"WRWorker#2",44:"Compositor",40:"WRWorkerLP#4",33:"WRWorker#5",37:"WRWorkerLP#1",39:"WRWorkerLP#3",42:"WRWorkerLP#6",35:"WRWorker#7",29:"WRWorker#1",47:"IPDL Background",41:"WRWorkerLP#5",43:"WRWorkerLP#7",51:"QuotaManager IO",52:"DOM Worker",50:"IndexedDB #1",52:"TRR Background",53:"IndexedDB #2",68:"StyleThread#4",69:"StyleThread#5",67:"StyleThread#3",65:"StyleThread#1",64:"StyleThread#0",66:"StyleThread#2",62:"ImageBridgeChld",63:"WRSceneBuilder#1",64:"WRSceneBuilderLP#1",65:"WRRenderBackend#1",69:"GMPThread",70:"ProcessHangMon",70:"mozStorage #1",71:"mozStorage #2",72:"BackgroundThreadPool #1",74:"DNS Resolver #1",75:"DNS Resolver #2",76:"HTML5 Parser",77:"mozStorage #3",78:"IndexedDB #3",79:"IndexedDB #4",80:"SSL Cert #1",87:"SSL Cert #2",83:"IndexedDB #5",84:"DOM Worker",85:"DOM Worker",86:"BgIOThreadPool #2",89:"StreamTrans #58",93:"StreamTrans #62",87:"URL Classifier",88:"ExtensionProtocolHandler",91:"IndexedDB #6",92:"mozStorage #4",94:"StreamTrans #65",94:"DOM Worker",95:"RemoteLzyStream",97:"SSL Cert #3",99:"SSL Cert #4",98:"StreamTrans #70",115:"StreamTrans #87", Throttleable: 1 TotalPhysicalMemory: 8589934592 URL: about:preferences UptimeTS: 13.166666666666666 Vendor: Mozilla Version: 95.0.2 useragent_locale: en-US

This report also contains technical information about the state of the application when it crashed.