Firefox waa mid ka mid ah daalacashada mareegaha caanka ah ee adduunka intarneedka. Si uu u shaqeeyo browserka saxda ah, waxaad u baahan tahay profile furan. Haddii ay si lama filaan ah u xirto waxaad heli doontaa fariin, Firefox horayba waa u shaqeysay, laakiin kama jawaabayso^{(Firefox is already running, but is not responding)} . Sidoo kale, haddii Firefox -ka aan si sax ah loo xidhin oo uu gadaal ka socdo, waxaad la kulmi doontaa dhibaato la mid ah. Waxaa jira sababo badan oo keena arrinta, markaa, sii wad akhrinta.

Sida loo hagaajiyo Firefox waxay mar hore ku shaqeysay Windows 10^{(How to Fix Firefox is Already Running in Windows 10)}

Dhammaan xogta aad ku kaydiso Firefox waxa lagu ururiyay profile Firefox . Muuqaalkan waxa lagu kaydiyaa saxanka kaydinta deegaanka. Haddii ay wax ka khaldan yihiin Firefox , waxaad isticmaali kartaa galkan ku kaydsan PC-gaaga. Markaad dib u rakibto browserka, dhammaan xogta waa la soo celin karaa haddii loo baahdo. Joogteynta iyo xasilloonida sababo awgood, mararka qaarkood browserkaagu wuxuu xiraa astaantaada taasoo tilmaamaysa in browserkaagu xiran yahay. Xaaladdan oo kale, codsigu wuxuu isticmaalaa faylka profile si uu u socodsiiyo browserka, taas oo kicinaysa arrinta. Waa kuwan qaar ka mid ah sababaha keenaya in Firefox uu horayba u shaqeeyo, laakiin aan ka jawaabin arrinta:

• Dhowr hawlood oo Firefox ah ayaa gadaal ka socda, laakiin ma muuqato.
• Marka Firefox ku burburto badhtamaha baarista, waxaad wajihi doontaa isla arin la mid ah.
• Firefox waa la cusboonaysiiyay, haddana isbeddellada kama muuqdaan browserka.
• Mararka qaarkood, Firefox wuu qaboojiyaa sababtoo ah joogitaanka kutaannada codsiga sidaas darteed dhammaan hawlaha browserka ayaa looga tagayaa gadaasha.
• Khasnado musuqmaasuq^(Corrupt) ah iyo kordhinta browserka.
• Cilad kasta oo ku timaada astaanta isticmaalaha iyo goobaha browserka ee aan ku haboonayn

Qaybtan, waxaanu ku soo diyaarinay liis habab kaa caawin doona inaad xaliso dhibaatada. Hababka waxaa loo habeeyey iyadoo loo eegayo darnaanta iyo waxtarka isku mid ah. U raac si isku mid ah si aad u hesho natiijooyin qumman.

Habka 1: Dib u bilaw PC^{(Method 1: Restart PC)}

Habka ugu horreeya ee cilad-raadinta ee dhib kasta oo PC ah waa dib u bilaabista kombiyuutarka. Dib-u-kicinta kumbiyuutarku waxay hagaajin doontaa dhammaan cilladaha ku-meel-gaarka ah ee la xidhiidha isaga oo kaa caawinaya inaad hagaajiso dhammaan khilaafyada browserka. Raac tilmaamaha hoos ku xusan si aad dib u kiciso kombayutarka ama aad damiso kombayutarka oo aad dib u bilowdo.

1. U gudub  Desktop  -ka adigoo riixaya  Windows + D keys  isku mar.

2. Hadda, isku mar taabo  Alt + F4 keys  . Waxaad arki doontaa daaqad pop-up ah sida hoos ku cad.

3. Hadda, guji sanduuqa hoos u dhaca oo dooro  ikhtiyaarka Dib  -u-soo-celinta.^(Restart )

4. Ugu dambeyntii, ku dhufo  Enter  si aad dib u bilowdo nidaamkaaga.

Habka 2: Dib u bilaw Firefox^{(Method 2: Restart Firefox)}

Waxaad gacanta ku joojin kartaa dhammaan hababka Firefox adiga oo raacaya tillaabooyinka hoos ku xusan.

1. Bilaw Maareeyaha Hawsha^{(Task Manager)} adigoo garaacaya Ctrl + Shift + Esc keys isku mar.

2. In the Processes tab, dooro habka Firefox .

3. Ugu dambeyntii, guji End task oo dib u bilow ^(reboot) PC^(the PC) .

4. Hadda, mar kale fur Mozilla Firefox^{(Mozilla Firefox)} browserka.

Sidoo kale Akhri: ^{(Also Read:)} Sida Loo Hagaajiyo Arrinta Shaashada Madow ee Firefox^{(How To Fix Firefox Black Screen Issue)}

Habka 3: Firefox ku fur Habka Cilad-bixinta^{(Method 3: Open Firefox in Troubleshoot Mode)}

Ku soo celinta Firefox ee qaabka cilad-saarku waxay dami doontaa dhammaan kordhinta, dami doonta dardargelinta qalabka, oo waxay isticmaashaa goobaha aaladaha caadiga ah, mawduucyada, beddelkeeda. Tani waxay kaa caawin doontaa inaad hagaajiso Firefox ayaa horeyba u shaqeyneysay, laakiin kama jawaabeyso arrinta sidoo kale Firefox-ka midigta guji oo aan shaqeyneynin^{(Firefox right click not working)} . iyo sidoo kale Firefox - ka midig-guji^{(Firefox right click not working)} arin aan shaqaynayn

1. Fur Firefox oo guji Application Menu

2. Dooro ikhtiyaarka Caawinta^{(Help )}

3. Guji Habka Xallinta^{(Troubleshoot Mode)}

Fiiro gaar ah:^{(Note: )} Waxa kale oo aad riixi kartaa furaha Shift marka aad fureyso Firefox si aad u bilowdo habka cilladaynta.

4. Xaqiiji degdegga adiga oo gujinaya Dib u Bilow^{(Restart )}

5. Mar labaad^(Again) , xaqiiji degdega ah adigoo gujinaya Open

Fiiro gaar ah:^{(Note: )} Si aad u damiso cilad-saarka, raac tillaabooyinka 1 & 2 oo dhagsii Dami Qaabka Cilad -doonka^{(Turn Troubleshoot Mode off )}

Habka 4: Demi Dardargelinta Qalabka (Haddii ay khuseyso)^{(Method 4: Turn Off Hardware Acceleration (If Applicable))}

Waxaa laga yaabaa inaad la kulanto arrinta haddii browserkaagu uu leeyahay arrimo ku saabsan soo-saareyaasha garaafyada iyo habaynta darawalka. Waxaad isku dayi kartaa inaad damiso adigoo raacaya tillaabooyinka hoos ku xusan:

1. Fur Firefox oo dhagsii astaanta Menu

2. Guji Settings ka menu-hoos u dhaca

3. Guji tab guud^{(General )} ee shayga bidix, oo hoos ugu dhaadhac liiska waxqabadka^{(Performance )}

4. Ka saar xulashooyinkan:

• Adeegso dejinta waxqabadka lagu taliyay^{(Use recommended performance settings)}
• Isticmaal dardargelinta qalabka marka la heli karo^{(Use hardware acceleration when available )}

5. Taabo oo Ctrl + Shift + Q keys si aad uga baxdo browserka

6. Ugu dambeyntii, dib u soo celi browserka^{(Relaunch the browser)} .

Sidoo kale akhri: ^{(Also Read:)} Sida loo hagaajiyo Firefox oo aan ciyaarin fiidiyowyada^{(How to Fix Firefox Not Playing Videos)}

Habka 5: Kordhinta Tweak^{(Method 5: Tweak Extensions)}

Haddii aad leedahay wax kordhin dhibaato leh oo karti u siisay biraawsarkaaga, waxa laga yaabaa inaad la kulanto Firefox mar horeba shaqaynaysa, laakiin kama jawaabin khalad. Si aad u xalliso, ama cusboonaysii kordhinta (si loo hagaajiyo dhiqlaha) ama ka dami biraawsarkaaga. Waa kuwan dhowr tilmaamood oo lagu cusboonaysiinayo oo la joojiyo kordhinta Firefox .

Ikhtiyaarka I: Cusbooneysii Firefox Extensions^{(Option I: Update Firefox Extensions)}

Haddii aad leedahay wax kordhin dhibaato ah oo karti u leh browserkaaga, waxaad isku dayi kartaa inaad cusboonaysiiso si aad u xalliso Kiiboodhka^(Keyboard) oo aan ka shaqayn Firefox .

1. Guji astaanta Menu ee Firefox, oo ay ku xigto Add-ons iyo themes^{(Add-ons and themes)}

2. Guji Settings

3. Guji Extensions & Themes

4. Guji goobaha oo dooro Check ^(Settings)for Updates^{(Check for Updates )} option

5A. Raac tilmaamaha shaashadda^{(on-screen instructions)} si aad u cusboonaysiiso kordhintaada.

5B. Haddii aan waxba loo baahnayn in la cusbooneysiiyo markaa- Wax cusub lama helin. Dib u bilaw ^{(No updates found. Restart)} Firefox si aad u hubiso in aad xalisay arinta

Ikhtiyaarka II: Dami Extensions Firefox^{(Option II: Disable Firefox Extensions)}

Haddii aadan wax hagaajin ah ku helin cusbooneysiinta fidinta Firefox -ka, waxaad joojin kartaa iyaga adoo raacaya tillaabooyinka hoos ku xusan.

1. Fur Firefox oo dhagsii astaanta Menu

2. Dooro add-ons iyo mawduucyada^{(Add-ons and themes )}

3. Guji Extensions ee shayga bidix oo dami^{(toggle off)} kordhinta

4. Sidoo kale, dami dhammaan kordhinta mid mid oo hubi kordhinta arrinta keenaysa

5. Ugu dambeyntii, haddii aad aqoonsatay kordhinta dhibka kuu keenaysa, dhagsii astaanta saddexda dhibcood leh ee^{(three-dotted icon )} u dhiganta oo dooro ikhtiyaarka ka saar^{(Remove )}

Habka 6: Nadiifi Cache Browser^{(Method 6: Clear Browser Cache)}

Faylasha ku meel gaadhka ah sida khasnado browserka kharriban waxay sababi karaan kala go'a xidhiidhka isticmaalaha dhamaadka. Tani waxay horseedi kartaa arrinta laga wada hadlay markaad dhex wareegayso internetka. Isku day inaad nadiifiso khasnad browserka oo hubi haddii aad hagaajisay qaladka. Halkan waxaa ah dhowr tilmaamo si aad meesha uga saarto kaydka browserka Firefox .

1. Fur browser webka Firefox .

2. Guji calaamadda Menu ee dhinaca midig ee sare ee shaashadda

3. Liiska hoos-u-dhaca ka dooro ikhtiyaarka Settings

4. Guji Privacy & Security doorashada ee shayga bidix

5. Guji badhanka Clear Data ee ^{(Clear Data)}Kukiyada iyo Xogta Goobta^{( Cookies and Site Data)}

6. Ka saar sanduuqa macluumaadka kuugyada iyo ^{(Cached Web Content)}goobta^{(Cookies and Site Data )} oo calaamadi sanduuqa macluumaadka shabakada ee la kaydiyay .

7. Ugu dambeyntii, dhagsii badhanka Clear si aad u nadiifiso cookies -ka kaydsan ee Firefox .

Sidoo kale akhri: ^{(Also Read:)} Hagaaji Server-ka aan cilad laga helin Firefox^{(Fix Server Not Found Error in Firefox)}

Habka 7: U yeel Xuquuqda Helitaanka Faylka Profile Firefox^{(Method 7: Enable Access Rights for Firefox Profiles Folder)}

Haddii aad isku daydo inaad gasho wax kasta oo ka kooban faylka kaas oo leh oo keliya xuquuqda akhri-kaliya, markaa waxa laga yaabaa inaad la kulanto dhibaatada laga wada hadlay. Hubi inaad siisay xuquuq gelitaanka saxda ah ee gal profile-ka adiga oo raacaya tillaabooyinka hoos ku xusan.

1. Guji Windows + E keys si aad u furto File Explorer

2. Koobbi oo ku dheji dariiqa^(path) hoose ee ciwaanka

C:\Users\USERNAME\AppData\Roaming\Mozilla\Firefox

3. Midig ku dhufo galka Profiles oo dooro Properties

4. Tabaha Guud^{(General )} , ka saar sanduuqa Read-only^{(Read-only (Only applies to files in folder) )}

5. Ugu dambeyntii, dhagsii Codso^{(Apply )} ka dibna OK si aad u badbaadiso isbeddellada

Habka 8: Tirtir File Lock Profile Firefox^{(Method 8: Delete Firefox Profile Lock File)}

Haddii Firefox u burburo si aan caadi ahayn, faylka qufulku wuxuu ku haray File Explorer kaaga . Faylkan waxaa laga yaabaa inuu faragelin ku sameeyo hawlaha caadiga ah ee browserka ee u horseedaya arrinta la sheegay. Waxaa lagugula talinayaa inaad tirtirto faylka qufulka astaanta guud sida lagu faray hoos si aad u xalliso Firefox mar hore ayay dhibaato ka socotaa.

1. Taabo oo Windows + E keys si aad u furto File Explorer

2. Ku dheji dariiqa^(path) soo socda ee menu navigation oo taabo furaha geli^{(Enter key)}

%APPDATA%\Mozilla\Firefox\Profiles\

3. Fur galka ku dhamaanaya .default

4. Hoos^(Scroll) u deg oo midig-guji faylka parent.lock oo tirtir

Fiiro gaar ah:^{(Note: )} Haddii aad Firefox ka bilaabayso -no-remote -line option-line, ka dibna ka saar kan.

Sidoo kale akhri: ^{(Also Read:)} Hagaaji isku xirkaagu maahan khalad sugan Firefox^{(Fix Your Connection is not Secure Error on Firefox)}

Habka 9: Cusbooneysii Firefox^{(Method 9: Update Firefox)}

Firefox inta badan waxay soo saartaa cusbooneysiinta si ay u hagaajiso dhiqlaha dhexdiisa. Waad cusbooneysiin kartaa Firefox si aad u xalliso Firefox mar hore ayay dhibtu ku socotaa sida hoos lagu faray.

1. Fur Firefox oo guji Menu sida ka muuqata

2. Dooro ikhtiyaarka Caawinta^{(Help )}

3. Guji Wax ku saabsan Firefox^{(About Firefox)} .

4A. Daaqad^(Window) cusub ayaa ka soo baxaysa shaashadda. Halkan ka hubi haddii Firefox-kaagu uu casriyaysan yahay^{(Firefox is up-to-date)} .

4B. Haddii kale, raac tilmaamaha shaashadda^{(on-screen instructions)} si aad u cusbooneysiiso Firefox

Habka 10: Cusbooneysii Windows^{(Method 10: Update Windows )}

Microsoft waxay isku dayaysaa inay horumariso dhammaan noocyadeeda Windows si ay u keento PC iyada oo aan wax qalad ah dhicin. Waxaad hagaajin kartaa cilladaha iyo dhibaatooyinka browser-ka la xiriira ee ku jira Windows 10 kombiyuutarka adiga oo cusbooneysiinaya. Raac tillaabooyinka hoos ku xusan si aad u cusboonaysiiso Windows oo aad u xalliso Firefox horeba arrintu u socoto.

1. Riix  Windows + I keys  isla mar si aad u bilowdo  Settings .

2. Guji meesha  Update & Security  tile, sida ka muuqata.

3.  Taabka Cusboonaysiinta Windows ^{(Windows Update )} , dhagsii badhanka  Hubi updates^{(Check for updates)}  .

4A. Haddii cusbooneysiin cusub la heli karo, dabadeed dhagsii  Hadda Ku rakib^{(Install Now)}  oo raac tilmaamaha si aad u cusbooneysiiso.

4B. Haddii kale, haddii Windows uu yahay mid casri ah, markaa waxay tusi doontaa  inaad^{(You’re up to date)}  fariin cusub tahay.

Sidoo kale akhri: ^{(Also Read:)} Sida loo suurtageliyo Habka qarsoodiga gudaha Chrome^{(How to Enable Incognito Mode in Chrome)}

Habka 11: Abuur Profile Firefox Cusub^{(Method 11: Create New Firefox Profile)}

Abuuritaanka profile cusub Firefox waxay xallin doontaa mashaakilaadka caanka ah ee la xidhiidha astaanta isticmaalaha. Halkan waxaa ah dhowr tilmaamood oo fudud si aad u abuurto profile cusub si loo hagaajiyo Firefox ayaa mar horeba soo baxday arrin.

1. Riix Windows + R keys si aad u furto sanduuqa wada hadalka Run

2. Ku qor firefox.exe –P oo ku dhufo furaha geli^{(Enter key)} .

3. Guji Create Profile… badhanka.

4. Guji Xiga^{(Next )} ee Samee Wizard Profile^{(Create Profile Wizard)} .

5. Ku qor magac profile cusub^{(Enter new profile name )} goobta magaca profile cusub

6. Ugu dambeyntii, dhagsii dhame^{(Finish )} si aad u dhamaystirto hawsha

7. Hadda, waxa laguu wareejin doonaa mar kale Maareeyaha Xogta^{(Profile Manager )} . Mar labaad ku bilow Firefox^{(Start Firefox)} profile cusub oo halkaas ku taxan. Waa inaadan wajihin Firefox mar hore ayaa shaqaynaysa laakiin kama jawaabayso^{(Firefox is already running but is not responding)} arrin

Habka 12: Dib u cusboonaysii Firefox^{(Method 12: Refresh Firefox)}

Markaad dib u cusbooneysiiso browserkaaga, Firefox ayaa badbaadin doonta;

• Bookmarks
• Baadhitaanka iyo soo dejinta taariikhda
• Erayada sirta ah, Kukiyada
• Foomamka shabakada si toos ah u buuxi macluumaadka
• Qaamuuska gaarka ah 

Laakiin waxay tirtirtaa xogta soo socota.

• Kordhinta iyo mawduucyada
• Oggolaanshaha mareegaha
• Dookhyada la beddelay
• Matoorada raadinta ee lagu daray
• Kaydinta DOM
• shahaadada amniga iyo habaynta qalabka
• Soo deji falalka
• ^(User)Hababka isticmaale iyo habaynta^(Toolbar) aaladaha.

Fiiro gaar ah:^{(Note: )} Marka dib loo cusbooneysiiyo biraawsarkaaga, profile-kaagii hore ee Firefox waxaa lagu dhejin doonaa miiskaaga oo wata gal la yiraahdo Old Firefox Data . Waxaad ku soo celin kartaa xogtaada Firefox profile kaaga cusub galkan. Haddii aadan u baahnayn galkan, waad tirtiri kartaa wakhti kasta.

1. Fur Firefox oo dhagsii astaanta Menu

2. Guji ikhtiyaarka Caawinta^{(Help )}

3. Dooro ikhtiyaarka macluumaadka cilad-bixinta oo dheeraad ah^{(More troubleshooting information )}

4. Guji Refresh Firefox

5. Mar labaad, dhagsii ikhtiyaarka Refresh Firefox

6. Guji dhame^{(Finish )} daaqadda Wizard Import^{(Import Wizard)}

7. Ugu dambeyntii, guji Let’s go! Ikhtiyaarka aad ku sii wadi karto dhex galka baadhistaada

Sidoo kale akhri: ^{(Also Read:)} Sida loo Hagaajiyo Chrome ka dhamaaday xusuusta^{(How to Fix Chrome Ran Out of Memory)}

Habka 13: Dib u rakib Firefox^{(Method 13: Reinstall Firefox)}

Haddii aad leedahay faylal rakiban oo musuqmaasuq ah Firefox , waxaad si fudud u xallin kartaa arrintan adiga oo dib u rakibaya browserka Firefox . Raac tillaabooyinka hoos ku xusan si aad dib ugu rakibto biraawsarkaaga Firefox oo aad u xalliso Firefox horayba arrintu u socotay.

1. Guji Start , ku qor Control Panel , oo ku dhufo furaha Gelida^{(Enter key)} .

2. Set View by > Large icons oo guji Programs and Features

3. Guji Firefox oo dooro ikhtiyaarka Uninstall

4. Xaqiiji isla markiiba haddii ay jirto, oo sug ilaa browserka uu ka soo dejinayo qalabkaaga. Kadib, dib u bilow kombuyutarkaaga^{(reboot your PC)}

5. Kala soo deg browserka Mozilla Firefox ka bogga rasmiga ah^{(official website)} .

6. Ku socodsii Firefox Installer adigoo laba jeer gujinaya faylka setup.exe.

lagu taliyay:^{(Recommended:)}

• Hagaaji Teamviewer oo aan ku xidhnayn Windows 10^{(Fix Teamviewer Not Connecting in Windows 10)}
• Hagaaji qaladka Windows 0 ERROR_SUCCESS^{(Fix Windows Error 0 ERROR_SUCCESS)}
• Hagaaji Khaladaadka XAALADDA Google Chrome^{(Fix Google Chrome STATUS BREAKPOINT Error)}
• Sida loo hagaajiyo Firefox Aan Bogagga Soo Raacin^{(How to Fix Firefox Not Loading Pages)}

Waxaan rajeyneynaa in hagahan uu ahaa mid waxtar leh oo aad awooday inaad hagaajiso Firefox horayba wuu u shaqaynayaa laakiin kama jawaabayo^{(Firefox is already running but is not responding)} Windows 10^{(Windows 10)} . Nala soo socodsii habka kuugu fiican. Sidoo kale, haddii aad hayso wax su'aalo ah / soo jeedin ah oo ku saabsan maqaalkan, ka dib waxaad xor u tahay inaad ku riddo qaybta faallooyinka.

Fix Firefox is Already Running

Fіrefоx is one of the popular web browsers in the internet world. For the proper functiоning of the browser, you need an unlocked profile. If it gets locked accidentаlly you will receive a mеssage, Firefox is already running, but is not responding. Also, if Firefox is not shut down properly and is running in the background, you will face the same problem. There are a lot of reasons that cause the issue so, continue reading.

How to Fix Firefox is Already Running in Windows 10

All the data you store in Firefox are collected in the Firefox profile. This profile is stored in a local storage disk. If anything is wrong with Firefox, you can use this folder stored on your PC. When you reinstall the browser, all the data can be restored if needed. For consistency and stability reasons, sometimes your browser locks your profile which indicates that your browser is locked. In this case, the application uses this profile file to run the browser, thereby triggering the issue. Here are some reasons that causes Firefox is already running, but is not responding issue:

• Several Firefox tasks are running in the background, but not visible.
• When Firefox crashes in the middle of browsing, you will face the same issue.
• Firefox is updated, yet changes are not reflected in the browser.
• Sometimes, Firefox freezes due to the presence of application bugs thus all the browser tasks are left in the background.
• Corrupt cache and extensions in the browser.
• Any glitches in the user profile and incompatible browser settings.

In this section, we have compiled a list of methods that will help you fix the problem. The methods are arranged according to the severity and effectiveness of the same. Follow them in the same order to attain perfect results.

Method 1: Restart PC

The first and foremost troubleshooting method for any PC-related problem is restarting the computer. Rebooting the computer will fix all the temporary glitches associated with it helping you to fix all browser conflicts. Follow the below-mentioned instructions to reboot the PC or alternatively shut down the computer and start it over again.

1. Navigate to the Desktop by pressing Windows + D keys simultaneously.

2. Now, press Alt + F4 keys simultaneously. You will see a pop-up window as shown below.

3. Now, click on the drop-down box and select the Restart option.

4. Finally, hit Enter to reboot your system.

Method 2: Restart Firefox

You can manually terminate all the Firefox processes by following the below-mentioned steps.

1. Launch Task Manager by hitting Ctrl + Shift + Esc keys simultaneously.

2. In the Processes tab, select Firefox process.

3. Finally, click on End task and reboot the PC.

4. Now, again launch the Mozilla Firefox browser.

Also Read: How To Fix Firefox Black Screen Issue

Method 3: Open Firefox in Troubleshoot Mode

Restarting Firefox in troubleshooting mode will disable all the extensions, turn off hardware acceleration, and use default toolbar settings, themes, instead. This will help you fix Firefox is already running, but is not responding issue as well as Firefox right click not working issue. as well as Firefox right click not working issue.. So, to restart Firefox in troubleshooting mode, follow the below-mentioned steps:

1. Launch Firefox and click on the Application Menu

2. Select the Help option

3. Click on Troubleshoot Mode

Note: You can also press the Shift key while opening Firefox to launch it in Troubleshooting mode.

4. Confirm the prompt by clicking on Restart

5. Again, confirm the prompt by clicking on Open

Note: To turn off troubleshooting mode, follow steps 1 & 2 and click on Turn Troubleshoot Mode off

Method 4: Turn Off Hardware Acceleration (If Applicable)

You may face the issue if your browser has some issues with graphical processors and driver setups. You can try turning it off by following the below-mentioned steps:

1. Launch Firefox and click on the Menu icon

2. Click on Settings from the drop-down menu

3. Click on General tab in the left pane, and scroll down to the Performance menu

4. Uncheck these options:

• Use recommended performance settings
• Use hardware acceleration when available

5. Press and hold Ctrl + Shift + Q keys together to quit the browser

6. Finally, Relaunch the browser.

Also Read: How to Fix Firefox Not Playing Videos

Method 5: Tweak Extensions

If you have any problematic extensions enabled in your browser, you may face Firefox is already running, but is not responding error. To resolve them, either update the extensions (to fix bugs) or disable them from your browser. Here are a few instructions to update and disable Firefox extensions.

Option I: Update Firefox Extensions

If you have any problematic extensions enabled in your browser, you could try updating them to resolve Keyboard not working in Firefox.

1. Click on the Menu icon in Firefox, followed by Add-ons and themes

2. Click on Settings

3. Click on Extensions & Themes

4. Click on the Settings and select the Check for Updates option

5A. Follow the on-screen instructions to update your extension.

5B. If nothing needs to be updated then-No updates found. Restart Firefox to check if you have fixed the issue

Option II: Disable Firefox Extensions

If you did not attain any fix by updating your Firefox extensions, you can disable them by following the below-mentioned steps.

1. Launch Firefox and click on the Menu icon

2. Select Add-ons and themes

3. Click on Extensions in the left pane and toggle off the extensions

4. Likewise, disable all the extensions one by one and check which extension is causing the issue

5. Finally, if you have identified which extension is causing you the trouble, click on the three-dotted icon corresponding to it and select the Remove option

Method 6: Clear Browser Cache

Temporary files like corrupt browser cache might cause interruptions in the end-user connection. This may lead to the discussed issue when you surf the internet. Try clearing the browser cache and check if you have fixed the error. Here are a few instructions to remove the Firefox browser cache.

1. Launch Firefox web browser.

2. Click on the Menu icon at the top right corner of the screen

3. Select the Settings option from the drop-down list

4. Click on Privacy & Security option in the left pane

5. Click on Clear Data button for Cookies and Site Data

6. Uncheck the Cookies and Site Data box and check Cached Web Content box.

7. Finally, click on the Clear button to clear the Firefox cached cookies.

Also Read: Fix Server Not Found Error in Firefox

Method 7: Enable Access Rights for Firefox Profiles Folder

If you try to access any contents of the file that has only read-only rights, then you may face the discussed problem. Ensure you have granted proper access rights to the profile folder by following the below-mentioned steps.

1. Click on the Windows + E keys to open File Explorer

2. Copy and paste the below path in the address bar

C:\Users\USERNAME\AppData\Roaming\Mozilla\Firefox

3. Right-click on the Profiles folder and select Properties

4. In the General tab, uncheck the box Read-only (Only applies to files in folder)

5. Finally, click on Apply and then OK to save the changes

Method 8: Delete Firefox Profile Lock File

If Firefox crashes abnormally, the lock file is leftover in your File Explorer. This file may interfere with the normal functions of the browser leading to the said issue. You are advised to delete this profile lock file as instructed below to solve Firefox is already running problem.

1. Press and hold Windows + E keys together to open the File Explorer

2. Paste the following path in the navigation menu and press Enter key

%APPDATA%\Mozilla\Firefox\Profiles\

3. Open folder ending with .default

4. Scroll down and right-click on the parent.lock file and delete

Note: If you are starting Firefox with -no-remote command-line options, then remove this.

Also Read: Fix Your Connection is not Secure Error on Firefox

Method 9: Update Firefox

Firefox often releases updates to fix bugs in it. You can update Firefox to solve Firefox is already running problem as instructed below.

1. Open Firefox and click on the Menu as shown

2. Select Help option

3. Click on About Firefox.

4A. A new Window pops up on the screen. Here check if your Firefox is up-to-date.

4B. Else, follow the on-screen instructions to update Firefox

Method 10: Update Windows

Microsoft is trying to improve all of its versions of Windows to bring a PC without any errors. You can fix the bugs and browser-related problems in your Windows 10 computer by updating it. Follow the below-mentioned steps to update Windows and fix Firefox is already running issue.

1. Press Windows + I keys simultaneously to launch Settings.

2. Click on the Update & Security tile, as shown.

3. In the Windows Update tab, click on Check for updates button.

4A. If a new update is available, then click Install Now and follow the instructions to update.

4B. Otherwise, if the Windows is up-to-date, then it will show You’re up to date message.

Also Read: How to Enable Incognito Mode in Chrome

Method 11: Create New Firefox Profile

Creating a new Firefox profile will resolve common problems associated with the user profile. Here are a few simple instructions to create a new profile to fix Firefox is already running issue.

1. Press the Windows + R keys together to open the Run dialog box

2. Type firefox.exe –P and hit Enter key.

3. Click on Create Profile… button.

4. Click on Next in Create Profile Wizard.

5. Type a new profile name in the Enter new profile name field

6. Finally, click on Finish to complete the process

7. Now, you will be navigated to the Profile Manager again. Start Firefox again with a new profile listed there. You shouldn’t face Firefox is already running but is not responding issue

Method 12: Refresh Firefox

By refreshing your browser, Firefox will save;

• Bookmarks
• Browsing and download history
• Passwords, Cookies
• Webform auto-fill information
• Personal dictionary 

But it deletes the following data.

• Extensions and themes
• Website permissions
• Modified preferences
• Added search engines
• DOM storage
• security certificate and device settings
• Download actions
• User styles and Toolbar customizations.

Note: Upon refreshing your browser, your old Firefox profile will be placed on your desktop with a folder named Old Firefox Data. You can restore your Firefox data to your new profile from this folder. If you do not need this folder, you can delete it anytime.

1. Open Firefox and click on the Menu icon

2. Click on Help option

3. Select the More troubleshooting information option

4. Click on Refresh Firefox

5. Again, click on the Refresh Firefox option

6. Click on Finish in the Import Wizard window

7. Finally, click on Let’s go! Option to continue surfing your browsing

Also Read: How to Fix Chrome Ran Out of Memory

Method 13: Reinstall Firefox

If you have corrupt installation files in Firefox, you can easily fix this issue by reinstalling the Firefox browser. Follow the below-mentioned steps to reinstall the Firefox browser and fix Firefox is already running issue.

1. Click on Start, type Control Panel, and hit the Enter key.

2. Set View by > Large icons and click on Programs and Features

3. Click on Firefox and select the Uninstall option

4. Confirm the prompt if any, and wait until the browser gets uninstalled on your device. Then, reboot your PC

5. Download the Mozilla Firefox browser from the official website.

6. Run the Firefox Installer by double-clicking on setup.exe file.

Recommended:

• Fix Teamviewer Not Connecting in Windows 10
• Fix Windows Error 0 ERROR_SUCCESS
• Fix Google Chrome STATUS BREAKPOINT Error
• How to Fix Firefox Not Loading Pages

We hope that this guide was helpful and you were able to fix Firefox is already running but is not responding on Windows 10. Let us know which method worked for you the best. Also, if you have any queries/suggestions regarding this article, then feel free to drop them in the comments section.

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