Firefox Community Forum

I have been successfully using FireFox for many years, recently we downsized into a Condo,now 81 years young. I have FireFox as my default browser choice, but it only lists Google on the search bar, when I type in my search in the box under the Firefox name it immediately jumps up to the top of the page Google browser.

How do I get back my screen to use FireFox as my search engine ?? I have tried to change it but will only give me two options Google or Google ?? Is it possible to go back to the screen and try and start again??

Many thanks to anyone who will give me info as to how to rectify my problem, be gentle with me as I am efficient in using the computer but less so trying to solve my problems. Robin

The title already says it all. Whenever i have some sound or video running in any tab, clicking on certain things like other videos or animated stuff in the same tab or another one causes a small interruption in the sound/video. Clicking a lot of times results in sound and video stuttering. I does not appear when i just click another link.

I already tried updating firefox, reinstall firefox, even downgrading firefox. This problem only appears in firefox and only on this device. I would be very thankfull for some advices, because this is really annoying.

I've run into a troublesome error with Firefox for probably eight months now, so I have not been using the browser. Whenever I attempt to install ANY add-on from the Firefox add-ons page, I get the message "[Add-on name] could not be installed because Firefox could not modify the needed file". Furthermore, attempting to download the add-on file manually (should it be available on a github page or the like) leads to the same message or a notification that the download failed.

As a matter of fact, downloading almost any kind of file on Firefox inevitably fails. The exact notification is shown in the upper-right corner of the browser window, where downloads are shown, and beneath the file in question is an indicator that says "Failed". Everything from .png to .zip to .exe appears in the downloads queue for a second, then fails.

I have tried every solution the Firefox add-on troubleshooting page has suggested, including solutions suggested in other threads, such as deleting/creating new profiles. I have also attempted to completely reinstall Firefox on multiple occasions, as well as the refresh Firefox option.

To recount, the following troubleshoot solutions did not work:

--Everything on the Firefox add-on troubleshooting page --Restart Firefox --Refresh Firefox --Create new Firefox profile and attempt to install add-ons from there --Delete and renew the extensions* files from the profile root folder --Modifying the xpinstall.signatures.required in about:config (true or false, doesn't matter) --Modifying the extensions.alwaysUnpack in about:config (again, true or false, doesn't matter) --Double-checking allow list and permissions on local firewall and antivirus software (the app is protected, add-ons are allowed) --Disabling antivirus software --Running Firefox as Administrator --Reinstall Firefox --Restarting PC

If I want to download a file or add an extension, I need to switch to a different browser such as a chromium-based one or Microsoft Edge to download the file. In the case of add-ons, I switch browsers, download the file, and select the "install add-on from file" option under "manage extensions" in about:addons.

One final thing. It seems that sometimes streaming sites won't work on Firefox (even with ad-blocker disabled or the site allowed through the ad-blocker), and sometimes video won't properly load either. These things work fine on other browsers.

I really like Firefox as a browser and enjoy the privacy it provides built-in. I didn't have any of these issues up until last year and I was forced to switch over. I would really appreciate any help with this.

Hello.

Typing anything in URL (address) bar causes my CPU spike to 15-20% shown in Windows Task Manager, and up to 80% shown in Firefox Task Manager. I have 8 core / 16 threads CPU running at 4.0 GHz, so typing text in browser taking 15-20% of that is rather bizarre to me. OS: Windows 10 What I tried: - disabling Firefox Accessibility Service - hardware acceleration on/off - troubleshooting mode

Don't have same issue in other browsers (Chrome, Opera) Any ideas what else that might be?

While using Yahoo email I tried to access the 'Notepad' page and get a message saying to Download a new version of Firefox to see the 'Calendar' even though I was trying for the 'Notepad' not the 'Calendar'. If I try for the 'Calendar' I initially get the small right-sidebar version fine but if I ask for the full page version I get the error message again. This does not happen if I access Yahoo through Chrome-browser. I have repeatedly done the download to no avail. (I have version 99.0.1). I am attaching a screenshot of the error message. Thanks for any help. No rush.

is there any way i can roll back the most recent firefox update? i updated firefox on june 12th and ever since than, i can not use firefox or open any tabs due to it continuously crashing over and over with no recovery. it is so bad that i had to go to microsoft edge just to report this problem, because i can not get firefox to open anything beyong my homepage without crashing the tabs. please email me at gnralee01@yahoo.com this is infuriating and i have to now use microsoft edge for my browsing because i can not use firefox until you fix this. i have uninstalled and reinstalled firefox 3 seperate times and i still get the same results. firefox worked great prior to the june 12th update.

EMAIL VERFICIATION CODE ISN'T SENT\ tried a few attemtps

I formatted my laptop, and now i downoladed mozilla, logging in... and waiting for verficiation code for mozilla sync account for years, please help

Hello team,

I'm not sure what happened, but I was not able to open Firefox after restarting my PC. I currently run Windows 11 on a fully upgraded rig.

Up until today, I have been trouble free. Error 1: "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window."

I tried several options - and have been googling/trying several steps for a couple of hours (after each step, I restarted the PC):

1. Uninstalled and then Reinstalled a fresh copy of Mozilla 2. Attempted to use Command Lines to open Firefox https://wiki.mozilla.org/Firefox/CommandLineOptions 3. Opened Profile Manager and attempted to create a new profile - when I did this the new profile would not display in the Profile Manager, but it would display in the Profiles folder under Appdata [I tried this multiple times] 4. Deleted the profiles.ini file

After deleting the .ini file Error 2: "Your Firefox profile cannot be loaded. It may be missing or inaccessible." 1. Uninstalled and then Reinstalled a fresh copy of Mozilla 2. Opened Profile Manager and attempted to create a new profile. After following the Profile Wizard, another error pops up: "An unexpected error has prevented your changes from being saved."

I am completely stumped. I hope you can help, Sean

My email changed from a .com to a .org and I was forced to reinstall windows before I could change it so I can't recover my account, which has passwords I need attached to it.

Can someone confirm if mozilla-api[.]com is an official Mozilla domain? It was registered 7 months ago with Namecheap registrar. I am unable to find any overlap with official Mozilla infrastructure and I suspect this is a malicious domain.

im afraid to download anything. i should not have to download firefox browser, i have been using this acct for years. i tried to update ccleaner last nite and windows defender caught a trojan but removed it right away all other places i have been were fine today what happened to my firefox and duckduck go etc

Instructions on changing primary email address not helpful-prompted to access Accounts but profile displayed would not let me edit my primary email address. When attempted to add secondary address was notified that code was sent to my old email address was was compromised & deleted by security of my carrier Want to add new email address & add secondary email account. Assistance greatly appreciated

{

 "securitySoftware": {
   "registeredAntiVirus": "Microsoft Defender Antivirus",
   "registeredAntiSpyware": "",
   "registeredFirewall": "Microsoft Firewall"
 },
 "processes": {
   "remoteTypes": {
     "privilegedabout": 1,
     "extension": 1,
     "prealloc": 1
   },
   "maxWebContentProcesses": 8
 },
 "environmentVariables": {
   "MOZ_APP_RESTART": "1",
   "MOZ_CRASHREPORTER_DATA_DIRECTORY": "C:\\Users\\yourm\\AppData\\Roaming\\Mozilla\\Firefox\\Crash Reports",
   "MOZ_CRASHREPORTER_EVENTS_DIRECTORY": "C:\\Users\\yourm\\AppData\\Roaming\\Mozilla\\Firefox\\Profiles\\apx9tstq.default-release-1650652330211\\crashes\\events",
   "MOZ_CRASHREPORTER_PING_DIRECTORY": "C:\\Users\\yourm\\AppData\\Roaming\\Mozilla\\Firefox\\Pending Pings",
   "MOZ_CRASHREPORTER_RESTART_ARG_0": "C:\\Program Files\\Mozilla Firefox\\firefox.exe",
   "MOZ_CRASHREPORTER_STRINGS_OVERRIDE": "C:\\Program Files\\Mozilla Firefox\\browser\\crashreporter-override.ini",
   "MOZ_SKELETON_UI_RESTARTING": "1"
 },
 "modifiedPreferences": {
   "browser.contentblocking.category": "standard",
   "browser.download.useDownloadDir": false,
   "browser.search.region": "US",
   "browser.search.update": false,
   "browser.sessionstore.upgradeBackup.latestBuildID": "20220411174855",
   "browser.startup.homepage_override.buildID": "20220411174855",
   "browser.startup.homepage_override.mstone": "99.0.1",
   "browser.startup.page": 3,
   "browser.urlbar.placeholderName": "DuckDuckGo",
   "browser.urlbar.quicksuggest.migrationVersion": 2,
   "browser.urlbar.quicksuggest.scenario": "offline",
   "browser.urlbar.suggest.bookmark": false,
   "browser.urlbar.suggest.openpage": false,
   "browser.urlbar.suggest.searches": false,
   "browser.urlbar.tipShownCount.searchTip_onboard": 4,
   "doh-rollout.balrog-migration-done": true,
   "doh-rollout.disable-heuristics": true,
   "doh-rollout.doneFirstRun": true,
   "doh-rollout.doorhanger-decision": "UIOk",
   "doh-rollout.home-region": "US",
   "doh-rollout.uri": "https://mozilla.cloudflare-dns.com/dns-query",
   "dom.disable_open_during_load": false,
   "dom.forms.autocomplete.formautofill": true,
   "dom.security.https_only_mode": true,
   "dom.security.https_only_mode_ever_enabled": true,
   "extensions.lastAppVersion": "99.0.1",
   "idle.lastDailyNotification": 1651446016,
   "media.gmp-gmpopenh264.abi": "x86_64-msvc-x64",
   "media.gmp-gmpopenh264.lastUpdate": 1650652374,
   "media.gmp-gmpopenh264.version": "1.8.1.1",
   "media.gmp-manager.buildID": "20220411174855",
   "media.gmp-manager.lastCheck": 1651358262,
   "media.gmp-widevinecdm.abi": "x86_64-msvc-x64",
   "media.gmp-widevinecdm.lastUpdate": 1650652376,
   "media.gmp-widevinecdm.version": "4.10.2391.0",
   "media.gmp.storage.version.observed": 1,
   "media.hardware-video-decoding.failed": false,
   "media.peerconnection.ice.default_address_only": true,
   "media.peerconnection.ice.no_host": true,
   "media.peerconnection.ice.proxy_only_if_behind_proxy": true,
   "network.http.proxy.respect-be-conservative": false,
   "network.trr.bootstrapAddress": "1.1.1.1",
   "network.trr.confirmationNS": "skip",
   "network.trr.excluded-domains": ",accounts.firefox.com,profile.accounts.firefox.com,oauth.accounts.firefox.com,firefoxusercontent.com,mozillausercontent.com,accounts-static.cdn.mozilla.net,accounts-static-2.stage.mozaws.net,firefox.factor11.cloudflareclient.com,detectportal.firefox.com,localhost.localdomain,localhost6.localdomain6,localhost6",
   "network.trr.fetch_off_main_thread": false,
   "network.trr.mode": 3,
   "network.trr.uri": "https://mozilla.cloudflare-dns.com/dns-query",
   "places.database.lastMaintenance": 1651265143,
   "privacy.sanitize.pending": "[{\"id\":\"newtab-container\",\"itemsToClear\":[],\"options\":{}}]",
   "privacy.history.custom": true,
   "privacy.purge_trackers.date_in_cookie_database": "0",
   "privacy.purge_trackers.last_purge": "1651446020315",
   "privacy.userContext.enabled": true,
   "security.remote_settings.crlite_filters.checked": 1651525452,
   "security.remote_settings.intermediates.checked": 1651425976,
   "security.sandbox.content.tempDirSuffix": "{26f660aa-1fb1-4924-9d39-ba6d8030032f}",
   "services.sync.declinedEngines": "",
   "services.sync.lastPing": 1651446447,
   "services.sync.lastSync": "Mon May 02 2022 14:09:07 GMT-0700 (Pacific Daylight Time)",
   "services.sync.engine.addresses": true,
   "services.sync.engine.addresses.available": true,
   "services.sync.engine.creditcards": true,
   "services.sync.engine.prefs.modified": false,
   "signon.rememberSignons": false,
   "storage.vacuum.last.index": 1,
   "storage.vacuum.last.places.sqlite": 1650653788,
   "ui.osk.debug.keyboardDisplayReason": "IKPOS: Touch screen not found."
 },
 "lockedPreferences": {
   "fission.autostart.session": false
 },
 "printingPreferences": {
   "print.more-settings.open": true,
   "print.printer_HP57B824_(HP_OfficeJet_Pro_8720).print_duplex": 0,
   "print_printer": "OneNote (Desktop)"
 },
 "media": {
   "currentAudioBackend": "wasapi",
   "currentMaxAudioChannels": 2,
   "currentPreferredSampleRate": 48000,
   "audioOutputDevices": [
     {
       "name": "Speakers (Realtek(R) Audio)",
       "groupId": "INTELAUDIO\\FUNC_01&VEN_10EC&DEV_0294&SUBSYS_104314A1&REV_1000\\4&33d682b5&0&0001",
       "vendor": "",
       "type": 2,
       "state": 2,
       "preferred": 5,
       "supportedFormat": 4112,
       "defaultFormat": 4096,
       "maxChannels": 2,
       "defaultRate": 48000,
       "maxRate": 48000,
       "minRate": 48000,
       "maxLatency": 480,
       "minLatency": 144
     },
     {
       "name": "",
       "groupId": "",
       "vendor": "",
       "type": 2,
       "state": 0,
       "preferred": 0,
       "supportedFormat": 4112,
       "defaultFormat": 4096,
       "maxChannels": 2,
       "defaultRate": 44100,
       "maxRate": 44100,
       "minRate": 44100,
       "maxLatency": 0,
       "minLatency": 0
     },
     {
       "name": "E20 (Intel(R) Display Audio)",
       "groupId": "INTELAUDIO\\FUNC_01&VEN_8086&DEV_280B&SUBSYS_80860101&REV_1000\\4&33d682b5&0&0201",
       "vendor": "",
       "type": 2,
       "state": 0,
       "preferred": 0,
       "supportedFormat": 4112,
       "defaultFormat": 4096,
       "maxChannels": 2,
       "defaultRate": 48000,
       "maxRate": 48000,
       "minRate": 48000,
       "maxLatency": 0,
       "minLatency": 0
     },
     {
       "name": "",
       "groupId": "",
       "vendor": "",
       "type": 2,
       "state": 0,
       "preferred": 0,
       "supportedFormat": 4112,
       "defaultFormat": 4096,
       "maxChannels": 2,
       "defaultRate": 44100,
       "maxRate": 44100,
       "minRate": 44100,
       "maxLatency": 0,
       "minLatency": 0
     },
     {
       "name": "SOUNDBAR (TaoTronics TT-SK023)",
       "groupId": "BTHENUM\\{0000110b-0000-1000-8000-00805f9b34fb}_VID&0002099a_PID&0500\\7&1c634f93&3&F013C3E30949_C00000000",
       "vendor": "",
       "type": 2,
       "state": 1,
       "preferred": 0,
       "supportedFormat": 4112,
       "defaultFormat": 4096,
       "maxChannels": 2,
       "defaultRate": 44100,
       "maxRate": 44100,
       "minRate": 44100,
       "maxLatency": 0,
       "minLatency": 0
     }
   ],
   "audioInputDevices": [
     {
       "name": "Microphone (Realtek(R) Audio)",
       "groupId": "INTELAUDIO\\FUNC_01&VEN_10EC&DEV_0294&SUBSYS_104314A1&REV_1000\\4&33d682b5&0&0001",
       "vendor": "",
       "type": 1,
       "state": 2,
       "preferred": 5,
       "supportedFormat": 4112,
       "defaultFormat": 4096,
       "maxChannels": 2,
       "defaultRate": 48000,
       "maxRate": 48000,
       "minRate": 48000,
       "maxLatency": 480,
       "minLatency": 64
     },
     {
       "name": "",
       "groupId": "",
       "vendor": "",
       "type": 1,
       "state": 0,
       "preferred": 0,
       "supportedFormat": 4112,
       "defaultFormat": 4096,
       "maxChannels": 2,
       "defaultRate": 48000,
       "maxRate": 48000,
       "minRate": 48000,
       "maxLatency": 0,
       "minLatency": 0
     },
     {
       "name": "Stereo Mix (Realtek(R) Audio)",
       "groupId": "INTELAUDIO\\FUNC_01&VEN_10EC&DEV_0294&SUBSYS_104314A1&REV_1000\\4&33d682b5&0&0001",
       "vendor": "",
       "type": 1,
       "state": 0,
       "preferred": 0,
       "supportedFormat": 4112,
       "defaultFormat": 4096,
       "maxChannels": 2,
       "defaultRate": 48000,
       "maxRate": 48000,
       "minRate": 48000,
       "maxLatency": 0,
       "minLatency": 0
     },
     {
       "name": "",
       "groupId": "",
       "vendor": "",
       "type": 1,
       "state": 0,
       "preferred": 0,
       "supportedFormat": 4112,
       "defaultFormat": 4096,
       "maxChannels": 2,
       "defaultRate": 48000,
       "maxRate": 48000,
       "minRate": 48000,
       "maxLatency": 0,
       "minLatency": 0
     }
   ]
 },
 "accessibility": {
   "isActive": true,
   "forceDisabled": 0,
   "handlerUsed": true,
   "instantiator": "UIAUTOMATION|"
 },
 "startupCache": {
   "DiskCachePath": "C:\\Users\\yourm\\AppData\\Local\\Mozilla\\Firefox\\Profiles\\apx9tstq.default-release-1650652330211\\startupCache\\startupCache.8.little",
   "IgnoreDiskCache": true,
   "FoundDiskCacheOnInit": true,
   "WroteToDiskCache": false
 },
 "libraryVersions": {
   "NSPR": {
     "minVersion": "4.33",
     "version": "4.33"
   },
   "NSS": {
     "minVersion": "3.76.1",
     "version": "3.76.1"
   },
   "NSSUTIL": {
     "minVersion": "3.76.1",
     "version": "3.76.1"
   },
   "NSSSSL": {
     "minVersion": "3.76.1",
     "version": "3.76.1"
   },
   "NSSSMIME": {
     "minVersion": "3.76.1",
     "version": "3.76.1"
   }
 },
 "userJS": {
   "exists": false
 },
 "intl": {
   "localeService": {
     "requested": [
       "en-US"
     ],
     "available": [
       "en-US"
     ],
     "supported": [
       "en-US"
     ],
     "regionalPrefs": [
       "en-US"
     ],
     "defaultLocale": "en-US"
   },
   "osPrefs": {
     "systemLocales": [
       "en-US"
     ],
     "regionalPrefsLocales": [
       "en-US"
     ]
   }
 },
 "crashes": {
   "submitted": [],
   "pending": 0
 },
 "sandbox": {
   "contentSandboxLevel": 6,
   "effectiveContentSandboxLevel": 6,
   "contentWin32kLockdownState": "Win32k Lockdown disabled -- Running in Safe Mode"
 },
 "remoteAgent": {
   "listening": false,
   "url": ""
 },
 "graphics": {
   "numTotalWindows": 1,
   "numAcceleratedWindows": 1,
   "windowLayerManagerType": "WebRender (Software)",
   "windowLayerManagerRemote": true,
   "adapterDescription": "Intel(R) UHD Graphics 620",
   "adapterVendorID": "0x8086",
   "adapterDeviceID": "0x3ea0",
   "adapterSubsysID": "14a11043",
   "adapterRAM": 0,
   "adapterDrivers": "igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32",
   "driverVendor": "",
   "driverVersion": "26.20.100.7870",
   "driverDate": "2-5-2020",
   "adapterDescription2": "NVIDIA GeForce GTX 1050 with Max-Q Design",
   "adapterVendorID2": "0x10de",
   "adapterDeviceID2": "0x1c8d",
   "adapterSubsysID2": "14a11043",
   "adapterRAM2": 2048,
   "adapterDrivers2": "C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvam.inf_amd64_a043d7b150598e7c\\nvldumdx.dll,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvam.inf_amd64_a043d7b150598e7c\\nvldumdx.dll,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvam.inf_amd64_a043d7b150598e7c\\nvldumdx.dll,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvam.inf_amd64_a043d7b150598e7c\\nvldumdx.dll C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvam.inf_amd64_a043d7b150598e7c\\nvldumd.dll,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvam.inf_amd64_a043d7b150598e7c\\nvldumd.dll,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvam.inf_amd64_a043d7b150598e7c\\nvldumd.dll,C:\\WINDOWS\\System32\\DriverStore\\FileRepository\\nvam.inf_amd64_a043d7b150598e7c\\nvldumd.dll",
   "driverVendor2": "",
   "driverVersion2": "30.0.15.1169",
   "driverDate2": "2-1-2022",
   "isGPU2Active": false,
   "direct2DEnabled": false,
   "directWriteEnabled": true,
   "directWriteVersion": "10.0.22000.258",
   "clearTypeParameters": "Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ",
   "targetFrameRate": 60,
   "direct2DEnabledMessage": {
     "key": ""
   },
   "webgl1Renderer": "WebGL is currently disabled.",
   "webgl1Version": "-",
   "webgl1DriverExtensions": "-",
   "webgl1Extensions": "-",
   "webgl1WSIInfo": "-",
   "webgl2Renderer": "WebGL is currently disabled.",
   "webgl2Version": "-",
   "webgl2DriverExtensions": "-",
   "webgl2Extensions": "-",
   "webgl2WSIInfo": "-",
   "info": {
     "AzureFallbackCanvasBackend": "skia",
     "AzureCanvasBackend": "skia",
     "AzureContentBackend": "skia",
     "ApzWheelInput": 1,
     "ApzDragInput": 1,
     "ApzKeyboardInput": 1,
     "ApzAutoscrollInput": 1,
     "ApzZoomingInput": 1,
     "CMSOutputProfile": "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",
     "DisplayCount": 1,
     "Display0": "1920x1080@60Hz : Intel(R) UHD Graphics 620",
     "HardwareStretching": "both=1 window-only=0 full-screen-only=0 none=0 error=0"
   },
   "failures": [
     "[GFX1-]: RenderCompositorSWGL failed mapping default framebuffer, no dt"
   ],
   "indices": [
     0
   ],
   "featureLog": {
     "features": [
       {
         "name": "HW_COMPOSITING",
         "description": "Compositing",
         "status": "blocked",
         "log": [
           {
             "type": "default",
             "status": "available"
           },
           {
             "type": "runtime",
             "status": "blocked",
             "message": "Acceleration blocked by safe-mode"
           }
         ]
       },
       {
         "name": "D3D11_COMPOSITING",
         "description": "Direct3D11 Compositing",
         "status": "unavailable",
         "log": [
           {
             "type": "default",
             "status": "unavailable",
             "message": "Hardware compositing is disabled"
           }
         ]
       },
       {
         "name": "DIRECT2D",
         "description": "Direct2D",
         "status": "unavailable",
         "log": [
           {
             "type": "default",
             "status": "unavailable",
             "message": "Direct2D requires Direct3D 11 compositing"
           }
         ]
       },
       {
         "name": "D3D11_HW_ANGLE",
         "description": "Direct3D11 hardware ANGLE",
         "status": "disabled",
         "log": [
           {
             "type": "default",
             "status": "unavailable",
             "message": "D3D11 compositing is disabled"
           },
           {
             "type": "env",
             "status": "disabled",
             "message": "D3D11 compositing is disabled"
           }
         ]
       },
       {
         "name": "GPU_PROCESS",
         "description": "GPU Process",
         "status": "blocked",
         "log": [
           {
             "type": "default",
             "status": "available"
           },
           {
             "type": "runtime",
             "status": "blocked",
             "message": "Safe-mode is enabled"
           }
         ]
       },
       {
         "name": "WEBRENDER",
         "description": "WebRender",
         "status": "unavailable-in-safe-mode",
         "log": [
           {
             "type": "default",
             "status": "available"
           },
           {
             "type": "runtime",
             "status": "unavailable-in-safe-mode",
             "message": "Safe-mode is enabled"
           }
         ]
       },
       {
         "name": "WEBRENDER_QUALIFIED",
         "description": "WebRender qualified",
         "status": "available",
         "log": [
           {
             "type": "default",
             "status": "available"
           }
         ]
       },
       {
         "name": "WEBRENDER_COMPOSITOR",
         "description": "WebRender native compositor",
         "status": "unavailable",
         "log": [
           {
             "type": "default",
             "status": "available"
           },
           {
             "type": "runtime",
             "status": "unavailable",
             "message": "No DirectComposition usage"
           }
         ]
       },
       {
         "name": "WEBRENDER_PARTIAL",
         "description": "WebRender partial present",
         "status": "available",
         "log": [
           {
             "type": "default",
             "status": "available"
           }
         ]
       },
       {
         "name": "WEBRENDER_SHADER_CACHE",
         "description": "WebRender shader disk cache",
         "status": "unavailable",
         "log": [
           {
             "type": "default",
             "status": "available"
           },
           {
             "type": "runtime",
             "status": "unavailable",
             "message": "WebRender disabled"
           }
         ]
       },
       {
         "name": "WEBRENDER_OPTIMIZED_SHADERS",
         "description": "WebRender optimized shaders",
         "status": "unavailable",
         "log": [
           {
             "type": "default",
             "status": "available"
           },
           {
             "type": "runtime",
             "status": "unavailable",
             "message": "WebRender disabled"
           }
         ]
       },
       {
         "name": "WEBRENDER_ANGLE",
         "description": "WebRender ANGLE",
         "status": "unavailable-no-angle",
         "log": [
           {
             "type": "default",
             "status": "available"
           },
           {
             "type": "runtime",
             "status": "unavailable-no-angle",
             "message": "ANGLE is disabled"
           }
         ]
       },
       {
         "name": "WEBRENDER_DCOMP_PRESENT",
         "description": "WebRender DirectComposition",
         "status": "unavailable",
         "log": [
           {
             "type": "default",
             "status": "available"
           },
           {
             "type": "runtime",
             "status": "unavailable",
             "message": "Requires ANGLE"
           }
         ]
       },
       {
         "name": "WEBRENDER_SOFTWARE",
         "description": "WebRender software fallback",
         "status": "available",
         "log": [
           {
             "type": "default",
             "status": "available"
           }
         ]
       },
       {
         "name": "WEBGPU",
         "description": "WebGPU",
         "status": "blocked",
         "log": [
           {
             "type": "default",
             "status": "disabled",
             "message": "Disabled by default"
           },
           {
             "type": "runtime",
             "status": "blocked",
             "message": "WebGPU can only be enabled in nightly"
           }
         ]
       },
       {
         "name": "WINDOW_OCCLUSION",
         "description": "WINDOW_OCCLUSION",
         "status": "available",
         "log": [
           {
             "type": "default",
             "status": "available"
           }
         ]
       }
     ],
     "fallbacks": []
   },
   "crashGuards": []
 },
 "experimentalFeatures": [
   [
     "experimental-features-abouthome-startup-cache",
     "browser.startup.homepage.abouthome_cache.enabled",
     false
   ],
   [
     "experimental-features-cookie-samesite-lax-by-default2",
     "network.cookie.sameSite.laxByDefault",
     false
   ],
   [
     "experimental-features-cookie-samesite-none-requires-secure2",
     "network.cookie.sameSite.noneRequiresSecure",
     false
   ],
   [
     "experimental-features-cookie-samesite-schemeful",
     "network.cookie.sameSite.schemeful",
     false
   ],
   [
     "experimental-features-css-constructable-stylesheets",
     "layout.css.constructable-stylesheets.enabled",
     false
   ],
   [
     "experimental-features-css-masonry2",
     "layout.css.grid-template-masonry-value.enabled",
     false
   ],
   [
     "experimental-features-devtools-compatibility-panel",
     "devtools.inspector.compatibility.enabled",
     true
   ],
   [
     "experimental-features-devtools-serviceworker-debugger-support",
     "devtools.debugger.features.windowless-service-workers",
     false
   ],
   [
     "experimental-features-firefox-100",
     "general.useragent.forceVersion100",
     false
   ],
   [
     "experimental-features-media-jxl",
     "image.jxl.enabled",
     false
   ],
   [
     "experimental-features-ime-search",
     "browser.urlbar.keepPanelOpenDuringImeComposition",
     false
   ],
   [
     "experimental-features-web-gpu2",
     "dom.webgpu.enabled",
     false
   ],
   [
     "experimental-features-webrtc-global-mute-toggles",
     "privacy.webrtc.globalMuteToggles",
     false
   ]
 ],
 "addons": [
   {
     "name": "Add-ons Search Detection",
     "type": "extension",
     "version": "2.0.0",
     "isActive": true,
     "id": "addons-search-detection@mozilla.com"
   },
   {
     "name": "Amazon.com",
     "type": "extension",
     "version": "1.3",
     "isActive": true,
     "id": "amazondotcom@search.mozilla.org"
   },
   {
     "name": "Bing",
     "type": "extension",
     "version": "1.3",
     "isActive": true,
     "id": "bing@search.mozilla.org"
   },
   {
     "name": "DuckDuckGo",
     "type": "extension",
     "version": "1.1",
     "isActive": true,
     "id": "ddg@search.mozilla.org"
   },
   {
     "name": "eBay",
     "type": "extension",
     "version": "1.3",
     "isActive": true,
     "id": "ebay@search.mozilla.org"
   },
   {
     "name": "Google",
     "type": "extension",
     "version": "1.2",
     "isActive": true,
     "id": "google@search.mozilla.org"
   },
   {
     "name": "Wikipedia (en)",
     "type": "extension",
     "version": "1.1",
     "isActive": true,
     "id": "wikipedia@search.mozilla.org"
   },
   {
     "name": "Amazon Assistant",
     "type": "extension",
     "version": "10.2103.25.10303",
     "isActive": false,
     "id": "abb@amazon.com"
   },
   {
     "name": "Capital One Shopping: Online Coupon Tool",
     "type": "extension",
     "version": "0.1.1043",
     "isActive": false,
     "id": "{aff8af88-06a9-4eee-b383-3af08c47b8c8}"
   },
   {
     "name": "Dashlane",
     "type": "extension",
     "version": "6.2148.3",
     "isActive": false,
     "id": "jetpack-extension@dashlane.com"
   },
   {
     "name": "DuckDuckGo Privacy Essentials",
     "type": "extension",
     "version": "2022.4.26",
     "isActive": false,
     "id": "jid1-ZAdIEUB7XOzOJw@jetpack"
   },
   {
     "name": "Firefox Private Network",
     "type": "extension",
     "version": "24",
     "isActive": false,
     "id": "secure-proxy@mozilla.com"
   },
   {
     "name": "Firefox Relay",
     "type": "extension",
     "version": "2.3.4",
     "isActive": false,
     "id": "private-relay@firefox.com"
   },
   {
     "name": "Grammarly for Firefox",
     "type": "extension",
     "version": "8.897.0",
     "isActive": false,
     "id": "87677a2c52b84ad3a151a4a72f5bd3c4@jetpack"
   },
   {
     "name": "Pulse SMS Extension",
     "type": "extension",
     "version": "2.1.4",
     "isActive": false,
     "id": "{085bef48-0484-467c-9112-5689bfc33b83}"
   },
   {
     "name": "Translate Web Pages",
     "type": "extension",
     "version": "9.4.2",
     "isActive": false,
     "id": "{036a55b4-5e72-4d05-a06c-cba2dfcc134a}"
   }
 ],
 "features": [
   {
     "name": "DoH Roll-Out",
     "version": "2.0.0",
     "id": "doh-rollout@mozilla.org"
   },
   {
     "name": "Firefox Screenshots",
     "version": "39.0.1",
     "id": "screenshots@mozilla.org"
   },
   {
     "name": "Form Autofill",
     "version": "1.0.1",
     "id": "formautofill@mozilla.org"
   },
   {
     "name": "Picture-In-Picture",
     "version": "1.0.0",
     "id": "pictureinpicture@mozilla.org"
   },
   {
     "name": "Web Compatibility Interventions",
     "version": "31.0.0",
     "id": "webcompat@mozilla.org"
   },
   {
     "name": "WebCompat Reporter",
     "version": "1.4.2",
     "id": "webcompat-reporter@mozilla.org"
   }
 ],
 "application": {
   "name": "Firefox",
   "osVersion": "Windows_NT 10.0 22000",
   "version": "99.0.1",
   "buildID": "20220411174855",
   "distributionID": "",
   "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:99.0) Gecko/20100101 Firefox/99.0",
   "safeMode": true,
   "updateChannel": "release",
   "supportURL": "https://support.mozilla.org/1/firefox/99.0.1/WINNT/en-US/",
   "osTheme": "",
   "numTotalWindows": 1,
   "numFissionWindows": 0,
   "numRemoteWindows": 1,
   "launcherProcessState": 0,
   "fissionAutoStart": false,
   "fissionDecisionStatus": "disabledBySafeMode",
   "remoteAutoStart": true,
   "policiesStatus": 0,
   "keyLocationServiceGoogleFound": true,
   "keySafebrowsingGoogleFound": true,
   "keyMozillaFound": true
 },
 "normandy": {
   "addonStudies": [],
   "prefRollouts": [],
   "prefStudies": [],
   "nimbusExperiments": [],
   "nimbusRollouts": []
 }

}

Here is my code:

<html>
 <head>
  <meta charset="utf-8">
  <style>
   .fullCard,
   .lowerHalfCard,
   .upperHalfCard,
   .fullCard-after,
   .lowerHalfCard-after,
   .upperHalfCard-after {
     background-color: inherit;
     border-radius: 10px;
     height: 100%;
     width: 100%;
     position: absolute;
     
     align-items: center;
     display: flex;
     justify-content: center;
     vertical-align:middle;
   }
  
   .fullCard-after::after,
   .upperHalfCard-after::after{
     content: "";
     display: block;
     position: absolute;
     height: 4px;
     background-color: inherit;
     width: 100%;
     top: calc(50% - 2px);
   }
   .lowerHalfCard-after::after{
     content: "";
     display: block;
     position: absolute;
     height: 4px;
     background-color: inherit;
     width: 100%;
     top: calc(50% - 2px);
   }
   .lowerHalfCard,
   .lowerHalfCard-after{
    clip-path: polygon(0% 50%, 100% 50%, 100% 100%, 0% 100%);
   }
   .upperHalfCard,
   .upperHalfCard-after{
     clip-path: polygon(0% 0%, 100% 0%, 100% 50%, 0% 50%);
   }

   .splitFlap {
     background-color:black;
     box-sizing: border-box;
     border-radius: 10px;    
     width: 100px;
     height: 150px;
     position: relative;    
   }

   .rotate0to90 {
     animation-name: r0to90;
   }

   .rotate90to0 {
     animation-name: r90to0;
   }

   .rotate0to_90 {
     animation-name: r0to_90;
   }

   .rotate_90to0 {
     animation-name: r_90to0;
   }

   .rotate0to90,
   .rotate90to0,
   .rotate0to_90,
   .rotate_90to0 {
     animation-duration: 0.3s;
     animation-fill-mode: forwards;
   }

   @keyframes r0to90 {
     from {
    transform:rotateX(0deg);
     }

     to {
    transform: rotateX(90deg);
     }
   }

   @keyframes r90to0 {
     from {
    transform: rotateX(90deg);
     }

     to {
    transform: rotateX(0deg);
     }
   }

   @keyframes r0to_90 {
     from {
    transform: rotateX(0deg);
     }

     to {
    transform: rotateX(-90deg);
     }
   }

   @keyframes r_90to0 {
     from {
    transform: rotateX(-90deg);
     }

     to {
    transform: rotateX(0deg);
     }
   }

   .transform0to_90 {
     transform: rotateX(-90deg);
   }

   .transform0to90 {
     transform: rotateX(90deg);
   }
   .hide{
    display:none
   }
   .zIndex2 {
     z-index: 2;
   }

   .zIndex4 {
     z-index: 4;
   }

   .zIndex10 {
     z-index: 10;
   }
   .blue{
      background-color: blue
   }
   .green{
      background-color: green
   }
   .red{
      background-color: red
   }
   .orange{
     background-color: orange
   }
  </style>
  <script>
   let baseDiv,lowerDiv,middleDiv,upperDiv;
   document.addEventListener("DOMContentLoaded",()=>{
    baseDiv=document.getElementById("base");
    lowerDiv=document.getElementById("lower");
    middleDiv=document.getElementById("middle");
    upperDiv=document.getElementById("upper");
   });
   let backward=()=>{
       middleDiv.innerHTML=baseDiv.innerHTML;
    lowerDiv.classList.add("rotate0to90");
    middleDiv.className="upperHalfCard-after transform0to_90 zIndex4";
   }
   let forward=()=>{
    middleDiv.innerHTML=baseDiv.innerHTML;
    upperDiv.classList.add("rotate0to_90");
    middleDiv.className="lowerHalfCard-after transform0to90 zIndex4";
   }
   
   let upperHandler=()=>{
    middleDiv.classList.add("rotate90to0");
    upperDiv.classList.replace("zIndex4","zIndex2");    
   }
   let lowerHandler=()=>{
    lowerDiv.classList.replace("zIndex4","zIndex2");
    middleDiv.classList.add("rotate_90to0");    
   }
   let middleHandler=()=>{
    upperDiv.innerHTML=baseDiv.innerHTML;
    lowerDiv.innerHTML=baseDiv.innerHTML;
    middleDiv.className="hide";
    upperDiv.className="upperHalfCard-after zIndex4";
    lowerDiv.className="lowerHalfCard-after zIndex2";
   }
  </script>
 </head>
 <body>
  <div class="splitFlap">
   <div 
    id="base" 
    class="fullCard-after zIndex2">
    <img src="img/1_100.png">
   </div>
   <div 
    class="upperHalfCard-after zIndex4"
    id="upper"
    onAnimationEnd="upperHandler()">
    <img src="img/0_100.png">
   </div>
   <div 
    id="middle"
    class="hide"
    onAnimationEnd="middleHandler()">
   </div>
   <div
    class="lowerHalfCard-after zIndex2" 
    id="lower"
    onAnimationEnd="lowerHandler()">
    <img src="img/0_100.png">
   </div>
  </div>
  <p>
   <button onClick="forward()">
     +
   </button>
   <button onClick="backward()">
    -
   </button>
   <button onClick="setHinge()">Set Hinge</button>
  </p>
 </body>
</html> 

I am creating a split-flap. It works fine in Chrome, but in firefox, during the second rotation period, it is not smooth as in chrome. How can I fix it?

A while ago I made a Firefox account with my Yahoo email address as the primary email, and my Outlook email address as the secondary email. Eventually I realized that I didn't need my Yahoo email account anymore, so I deleted it, forgetting that it was being used as the primary email for my Firefox account. Now I can't remove my Outlook email from my Firefox account without verifying my Yahoo email account, and I can't even delete the Firefox account since it was made under the Yahoo email account as a primary email address.

Now I can't use my Outlook email address to create a new Firefox account either.