Firefox Support Forum

It started this morning (6/23/24) the page for a YouTube video will load but the video doesn't play. I have cleared the cookies and cache, shut the browser down, restarted the computer, turned off all the extensions, and have turned off hardware acceleration. Nothing has changed, I can watch other videos on Firefox and Youtube work as normal on other browsers. Last night (6/22/26) before shutting down may computer for the night I had an update for Firefox and shut the browser so it could update. The image is of what the video section is displaying.

In Firefox, after a reboot, how can I re open my previouse sessions?

Originally I had quite a lot of open browsers & tabs. Then I needed to do a reboot, and now I've lost those previouse sessions.

Usually I just open firefox, and this opens one browser, and then all of my previous browser, and tab reopen, but this time firefox crashed, and its popup said it needed to restart, but it would re-open my previous browser and tab, but it didnt.

After following the usuall firefox help giudes, it still wouldn't re open my previouse sessions. Now if I ask it to open my previouse sessions, it just opens the recent help giudes, and not anything before the crash.

So is there a backup file of myu missing sessions that I can roll back to?

Hello, I'm a web developer. I'm using the Firefox Developer Edition and currently working on a project that requires caret manipulation. I have this function right here that fetches the caret's client rect: ``` function getCaretRect(): DOMRect | null {

 const sel = window.getSelection()
 if (!sel || sel.rangeCount === 0) return null

 const range = sel.getRangeAt(0)
 const rects = range.getClientRects()
 if (rects.length === 0) return null

 return rects[0]

} ``` Here is where the issue arises. Suppose I have a contenteditable div with two line breaks (no new lines), and the second line is smaller than the first one. If the caret is positioned somewhere that is further than the end of the second line, and I press the down arrow key, then left, for some reason the caret rect I get has all values set to zero, like this: `{ x: 0, y: 0, width: 0, height: 0, top: 0, right: 0, bottom: 0, left: 0 }` I will add an image to explain further.

I don't have this issue on Chromium based browsers, but cross browser support is important for me.

There is one more issue to do with caret manipulation which is how contenteditable divs are handled. On a Chromium based browser, if I have a parent div that's contenteditable, then another div that's not contenteditable (contenteditable="false" explicitly), then two children divs which are both contenteditable (or more), I can navigate through the divs freely using the arrow keys and focus is managed better alongside event handlers. This is not present on Firefox, however.

If this is not the right place to ask for help then please guide me where is more suitable.

Lately YouTube playing videos have been playing super fast or skipping straight to the end. I mean, they are horribly fast.

Things to know:

• I am posting here because I can't determine whether browsers may have settings unique to them that I need to change. This also happens in Chrome, but not Edge.
• I was recently forced to upgrade to Windows 11 - I can't say this issue happened exactly at that time, but fairly recently after the upgrade. I am running Windows 11 Pro.
• This does NOT happen when playing in a private browser window, either Firefox or Chrome.
• Having the Mozilla VPN on or off has no effect.
• I am sure the playback speed is set to normal. I have tried changing the playback speed to anything but normal and then back to normal and the current video runs correctly UNTIL I play the next video.
• This does not happen with Vimeo.
• It does not happen in FF for Android.

Any questions, thoughts, or advice would be appreciated.

Hi,

ist the famous and great Mozilla FireFox Developer team aware of the issue and is working on it?

I am happey to describe in more detail if required. thx

I've removed firefox and reinstalled but for some reason my IOS continuity microphone and my Loopback (Rogue amoeba) virtual devices no longer show in firefox but they show up in firefox beta. Is there a setting that masks these devices off from the production branch?

After uninstall and reinstall my Firefox i can't restore my bookmark. I used (CTRL+shift+b) and restore my file "JSONLZ4". But i have an error as "Unable to process the backup file". I read your forum and test many things but nothing. I also used the https://www.jeffersonscher.com/ffu/bookbackreader.html,but it does not work? It prompts:failed JSON parsing: SyntaxError: Unexpected end of JSON input. I really need my bookmarks! How can I restore them?

Hi,

my firefox does not load any webpage no matter what Firefox profile I am using (created a new one for tests). I have a Win10 pc with Avast and Comodo installed, the system with the mentioned software and multiple different Firefox profiles was running since several years without problems.

A month ago I had the same issue with Firefox 126, which I guess was caused by a windows update, where I had trouble getting it installed. But after this (I had to increase the system reserved partition) Firefox was running without any problmes like before ...

Now no pages kan be load and always the crash monitor pops up.

AdapterDeviceID: 0x5916 AdapterDriverVersion: 30.0.100.9865 AdapterSubsysID: 224e17aa AdapterVendorID: 0x8086 Add-ons: formautofill%40mozilla.org:1.0.1,pictureinpicture%40mozilla.org:1.0.0,webcompat%40mozilla.org:125.1.0,default-theme%40mozilla.org:1.3,addons-search-detection%40mozilla.com:2.0.0,google%40search.mozilla.org:1.4,leo_ende_de%40search.mozilla.org:1.1,ecosia%40search.mozilla.org:1.2,wikipedia%40search.mozilla.org:1.3,bing%40search.mozilla.org:1.6,ddg%40search.mozilla.org:1.4,ebay%40search.mozilla.org:1.4 AvailablePageFile: 28210671616 AvailablePhysicalMemory: 6727372800 AvailableVirtualMemory: 138531126534144 BackgroundTaskMode: 0 BuildID: 20240606181944 CPUMicrocodeVersion: 0xf4 ContentSandboxCapable: 1 ContentSandboxLevel: 6 ContentSandboxWin32kState: Win32k Lockdown enabled -- default value is true CrashTime: 1719121467 DOMFissionEnabled: 1 DOMIPCEnabled: 1 EMCheckCompatibility: true GPUProcessLaunchCount: 1 GPUProcessStatus: Running GpuSandboxLevel: 1 HeadlessMode: 0 InstallTime: 1718671975 LastInteractionDuration: 76 LastStartupWasCrash: 0 LauncherProcessState: 0 ModuleSignatureInfo: {"Avast Software s.r.o.":["aswJsFlt.dll","snxhk.dll","aswhook.dll","AavmRpch.dll","aswCmnIS.dll","aswCmnOS.dll","dll_loader.dll","aswCmnBS.dll"],"Comodo Security Solutions, Inc.":["guard64.dll"],"Microsoft Windows":["CryptoWinRT.dll","d3d9.dll","windows.internal.shell.broker.dll","TaskFlowDataEngine.dll","linkinfo.dll","ntshrui.dll","thumbcache.dll","wpnapps.dll","Windows.StateRepositoryPS.dll","cdp.dll","explorerframe.dll","dataexchange.dll","edputil.dll","oleacc.dll","tiptsf.dll","GdiPlus.dll","cscapi.dll","twinapi.dll","ondemandconnroutehelper.dll","MSAudDecMFT.dll","mfperfhelper.dll","msmpeg2vdec.dll","winrnr.dll","pnrpnsp.dll","NapiNSP.dll","wscapi.dll","winmm.dll","wininet.dll","wsock32.dll","windows.staterepositorycore.dll","msdmo.dll","RTWorkQ.dll","mfplat.dll","ktmw32.dll","FWPUCLNT.DLL","OneCoreCommonProxyStub.dll","Windows.Security.Integrity.dll","comctl32.dll","Windows.ApplicationModel.dll","npmproxy.dll","directmanipulation.dll","Windows.Globalization.dll","DWrite.dll","srvcli.dll","urlmon.dll","Windows.UI.Immersive.dll","iertutil.dll","BCP47mrm.dll","InputHost.dll","dbgcore.dll","TextInputFramework.dll","Windows.UI.dll","MrmCoreR.dll","Bcp47Langs.dll","dhcpcsvc6.DLL","dhcpcsvc.dll","DXCore.dll","AppXDeploymentClient.dll","winnsi.dll","MP3DMOD.DLL","OneCoreUAPCommonProxyStub.dll","rasadhlp.dll","UIAnimation.dll","MMDevAPI.dll","AudioSes.dll","twinapi.appcore.dll","WindowManagementAPI.dll","ninput.dll","avrt.dll","ColorAdapterClient.dll","mscms.dll","xmllite.dll","nlaapi.dll","wshbth.dll","wtsapi32.dll","dsreg.dll","d3dcompiler_47.dll","d3d11.dll","WinTypes.dll","dcomp.dll","CoreUIComponents.dll","CoreMessaging.dll","policymanager.dll","netprofm.dll","apphelp.dll","dbghelp.dll","WindowsCodecs.dll","uxtheme.dll","resourcepolicyclient.dll","dwmapi.dll","rmclient.dll","windows.storage.dll","winhttp.dll","propsys.dll","kernel.appcore.dll","dxgi.dll","fwbase.dll","firewallapi.dll","profext.dll","rsaenh.dll","msvcp110_win.dll","ntmarta.dll","IPHLPAPI.DLL","netutils.dll","dnsapi.dll","mswsock.dll","cryptsp.dll","cryptbase.dll","wldp.dll","ntasn1.dll","ncrypt.dll","winsta.dll","msasn1.dll","fltLib.dll","version.dll","devobj.dll","umpdc.dll","powrprof.dll","sspicli.dll","userenv.dll","profapi.dll","bcrypt.dll","ucrtbase.dll","wintrust.dll","crypt32.dll","KERNELBASE.dll","cfgmgr32.dll","bcryptPrimitives.dll","msvcp_win.dll","win32u.dll","gdi32full.dll","user32.dll","imagehlp.dll","oleaut32.dll","ole32.dll","combase.dll","clbcatq.dll","nsi.dll","sechost.dll","shlwapi.dll","SHCore.dll","kernel32.dll","msvcrt.dll","gdi32.dll","rpcrt4.dll","advapi32.dll","ws2_32.dll","psapi.dll","shell32.dll","msctf.dll","setupapi.dll","imm32.dll","ntdll.dll"],"Microsoft Windows Software Compatibility Publisher":["msvcp140.dll","VCRUNTIME140.dll","VCRUNTIME140_1.dll","msvcp140.dll","VCRUNTIME140.dll","VCRUNTIME140_1.dll"],"Mozilla Corporation":["firefox.exe","xul.dll","gkcodecs.dll","libGLESv2.dll","nss3.dll","freebl3.dll","osclientcerts.dll","mozglue.dll","nssckbi.dll","softokn3.dll","lgpllibs.dll","libEGL.dll"]} MozCrashReason: Shutdown hanging at step AppShutdownNetTeardown. Something is blocking the main-thread. Notes: FP(D00-L1000-W0000100-T00) DWrite? DWrite+ WR? WR+ WebGL? EGL? EGL- GL Context? GL Context- GL Context+ WebGL+ ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox QuotaManagerStorageIsNetworkResource: 0 ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 1269 ShutdownProgress: profile-change-net-teardown ShutdownReason: AppClose StartupCacheValid: 1 StartupCrash: 0 StartupTime: 1719121150 SubmittedFrom: Client SystemMemoryUsePercentage: 60

Thank you so much. Best John

Hi,

I'm switching from Edge and have a frustrating issue.

In Edge I am very used to having separate behaviour for links with left and middle click.

i.e. from Gmail, if I left click a link it opens in a new tab and switches to the tab, if I middle click a link it opens in a new tab but stays on the current tab

In Firefox both seem to be controlled by the single setting.

I have looked in about:config and tried changing a few flags but cannot seem to find a combination that works how I want it.

Can anyone help?

This is a real dealbreaker for me and I will switch back if there's no solution :(

TIA

The website is https://groceries.morrisons.com/webshop/startWebshop.do

I enter my username & password and nothing happens. This occurs when I use Dashlane AND also if I enter username & password manually.

I can access my account successfully using Edge.

There is a folder on my Google drive called "Personality-provider". It has about 30 .json files. When is search "Personality-provider" on internet the results indicate this folder and files are associated with Firefox. A. Why are these stored on my google drive? B. Can I delete them from my google drive? C. What are these files? D. Are they necessary for me to have backed up? See images. Many thanks. Will

I am finding more and more sites that I regularly go to are no longer working on firefox. One site was because HTML5 apparently does not work on firefox. But others I don't know about why are no longer working on firefox. I thought it might be streaming related but just today I could not access one of my banks on firefox, and I tried many times, but had no problem signing on using Chrome.

I need working versions of Firefox not messes like I have been getting recently. 127.1 lost most of my passwords and won't link to websites I use every day. This version is a mess. I have had to go through and reset multiple passwords, and can't login to websites I use every day. Check your updates before you release them. I know have firefox set to not upgrade automatically.

When pasting text into Outlook Online the text removes the preceding space. A minor inconvenience but it does mean I have to double space before pasting.

Also after pasting text I get a paste box that locks out any controls unless I click out of it or press ESC. (image below)

Text being copied from inside Outlook doesn't pop up the box.

This problem is only happening with Firefox as using a different browser (i.e. chrome at office) does not do either of the problems. Anyway to fix either option?

I have a form with a date field. it should open the calendar downwards, and does so in a window with 5 tabs open. however in a window with 60 tabs it opens upwards - thus loosing it's head and the ability to change month and year. it's near the top of the form.

moving the tab from one window and back, without refresh etc, shows the calendar down wards (window with 5 tabs) or upwards (window with 60 tabs)

this is looking to me like a Firefox bug - I wondered if anyone has come across this interesting behaviour?

I apologise - ths was on my desk top - but i'm away so don't have many details. I can provide screen shots etc when I get back

many thanks

My master password no longer accepted. every time I try to use it {recently} I get a response please put your master password. It keeps asking me over and over with no result. please help. Thanks.

How can I use Firefox for private browsing or anything when you cannot even keep me as your Default Browser? Edge changes it everytime!! They override you so they have taken over my computer so I can't have firefox as default browser or anything? Thank you, Margaret P Miller peggiemiller1209@gmail.com

Bonjour,

Depuis plusieurs semaines, il m'est impossible de télécharger des PDF depuis firefox. J'ai essayé de faire une réparation, mais désormais j'ai également perdu mes extensions et lorsque je veux les réinstaller, on m'affiche : "Échec du téléchargement. Veuillez vérifier votre connexion." (par exemple pour ublockorigin)

Merci d'avance pour vos réponses, Cordialement Selma