Mozilla Firefox is a trusted Web Browser and is compatible with most devices. However, the Couldn’t load XPCOM error message pops up now and then. The XPCOM is a cross-platform component model from the Mozilla Firefox, so the Cannot load XPCOM error disrupts the browsing. You may click on the OK button to close the error message, but you may not be able to use the Firefox app. The article addresses the error and the methods to resolve the XPCOM Firefox error are explained here.
How to Fix Mozilla Firefox Couldn’t Load XPCOM Error on Windows 10
The list of causes for which the XPCOM error occurs on Firefox is given in this section.
- Outdated Firefox- The outdated version of the Firefox app may cause this error.
- Corrupt Firefox User Profile- The User Profile on the Firefox Web Browser may be corrupt or may have malware sources.
- Third-party Extensions on Firefox- The issue with the XPCOM may arise if there are third-party extensions installed on the Firefox app.
- Corrupt System Files- The System files installed locally on your PC may have been corrupt or the PC may be infected with a virus.
Indlela 1: Izindlela Eziyisisekelo Zokuxazulula Inkinga
The first approach to solve the Couldn’t load XPCOM error is to try the basic troubleshooting methods listed in this section.
1. Qala kabusha i-PC
There might be some glitches on your PC that prevent you from using the Firefox browser; you can restart your PC to fix the error. Press the Windows ukhiye, chofoza inkinobho Power button at the bottom-left corner, and click on the Qala kabusha inketho yokuqalisa kabusha i-PC yakho.
2. Hlola Ukuxhumana Kwe-inthanethi
An unstable Internet connection may hinder you from using the Firefox browser. You can check the speed of the connection using the Ukuhlolwa kwejubane and assess its quality.
- If the speed is low, try using any other Wi-Fi network for browsing on Firefox.
- Consider changing the data plan of the Internet Connection to a better plan.
3. Switch to Another Web Browser
If the XPCOM error with the Firefox Web Browser is still not resolved, you can try switching to another Web Browser like Google Chrome. Follow the steps below to switch to a different browser:
I-1. Qalisa Amasethingi ngokucindezela Windows + I okhiye ndawonye.
I-2. Chofoza Apps ukusetha.
I-3. Chofoza Izinhlelo zokusebenza ezizenzakalelayo kufasitelana lesokunxele.
4. Scroll down and click on the current Isiphequluli sewebhu.
5. Choose from the option as per your preference.
Funda futhi: Uyilungisa kanjani iFirefox ingalayishi amakhasi
4. Susa Amafayela Esikhashana
The numerous temporary files saved locally on your PC may have disrupted the browsing activity on Firefox. You can read the method to delete the temp files on your PC using the link given here.
5. Lungisa Amafayela Akhohlakele
The files on your PC may be corrupt and have some issues which may cause the Couldn’t load XPCOM error. Read the article to repair system files on Windows 10 for corrupt files using the link provided here.
6. Buyekeza iWindows
In most instances, using an outdated OS may cause issues on the PC; you need to update the Windows on your PC to the latest version to fix this error. Read the article on how to update Windows on your PC using the link given here.
7. Qalisa i-Windows Vuselela Isixazululo
The issues with the Firefox browser can be cleared by using the Windows Troubleshooter on your PC. Read the method to run the Windows Troubleshooter using the link here and fix the error.
8. Disable Antivirus Temporarily (If Applicable)
The third-party security services on your PC may disrupt you from using the Firefox app; you can disable the anti-virus program to fix this error. Implement the steps given in the link here to disable the Anti-virus software on your PC.
9. Yenza Ukubuyisela Isistimu
If the Firefox app performed better on the previous version of the Windows PC, you can try performing a System Restore on your PC to fix the error. The link which is given here will provide you with the method to perform a System Restore on your PC.
Funda futhi: Lungisa Uxhumo Lwakho Akulona Iphutha Elivikelekile kuFirefox
Method 2: Run Firefox as Administrator
The Couldn’t load XPCOM error might appear if the Firefox is not granted the administrative permissions on your PC. You have to run the Firefox app as an Administrator on your Pc to fix the error.
I-1. Cindezela u Ukhiye weWindows, thayipha Firefox bese uchofoza ku Qalisa njengomphathi inketho.
Method 3: Update Firefox Browser
Using an outdated version of the Firefox Web Browser can be a reason for this error. Follow the steps below to update the Firefox app on your PC.
1. Shaya i Ukhiye weWindows, thayipha Firefox bese uchofoza Vula.
2. Chofoza ku- Vula Imenyu Yohlelo button (indicated by the three horizontal lines) at the top-right corner of the home page and click on the Amasethingi option on the list displayed.
I-3. Ku General ithebhu, chofoza ku Hlola izibuyekezo inkinobho ku Ukuvuselelwa kweFirefox ingxenye.
4. Uzobona i Firefox is up to date message on the Firefox Updates section.
Qaphela: If there is an update for the Firefox browser, you will be prompted accordingly.
Method 4: Refresh Firefox Browser
To fix the Couldn’t load XPCOM error on the Firefox app, you can refresh Firefox entirely.
1. Qalisa Firefox uhlelo lokusebenza kusuka Ukuseshwa kweWindows ibha.
2. Okulandelayo, chofoza ku- Vula Imenyu Yohlelo bese uqhafaza kufayela le- Usizo option on the list displayed.
3. Chofoza ku- Troubleshoot Mode… ku Usizo lweFirefox iwindi.
4. Manje, chofoza inkinobho Qala kabusha inkinobho ku Qala kabusha iFirefox kumodi yokuxazulula inkinga iwindi le-pop-up.
5. Chofoza ku- Qala kabusha i-Firefox inkinobho ku Open Firefox in Troubleshoot Mode iwindi lokuqinisekisa.
6. Bese, chofoza inkinobho Qala kabusha i-Firefox inkinobho ku Refresh Firefox to its default settings iwindi.
7. Ekugcineni, chofoza ku Qeda inkinobho ku Import Complete window to Refresh Firefox completely.
Funda futhi: Lungisa Iphutha Elingatholakali Iseva kuFirefox
Method 5: Disable Firefox Extensions
The extensions on the Firefox Web Browser can be a reason for the Couldn’t load XPCOM error. You can disable the extensions on the browser to fix the error.
I-1. Vula I-Mozilla Firefox uhlelo lokusebenza kusuka Ukuseshwa kweWindows ibha.
2. Chofoza ku- Vula Imenyu Yohlelo bese uqhafaza kufayela le- Usizo option on the list displayed.
3. Manje, chofoza inkinobho Troubleshoot Mode… ku Usizo lweFirefox iwindi.
4. Chofoza ku- Vula inkinobho ku Qala kabusha iFirefox kumodi yokuxazulula inkinga iwindi le-pop-up.
5. Okulandelayo, chofoza ku- Vula Imenyu Yohlelo bese uqhafaza kufayela le- Izengezo nezindikimba option on the list.
6. Chofoza ku- Izandiso tab on the left pane of the next window and toggle off the add-ons on the window.
7. Bese, chofoza inkinobho amachashazi amathathu aqondile button on the add-on and click on the Susa button on the list.
8. Chofoza ku- Susa button on the confirmation pop-up message window.
Method 6: Create New Firefox Profile
The current User Profile on the Firefox web browser may be corrupt; you can create a new User Profile to fix the Couldn’t load XPCOM error.
Step I: Import Saved Bookmarks
As a first step, you need to import the Bookmarks you have saved on the current User Profile to avoid any loss of data.
I-1. Vula I-Mozilla Firefox uhlelo lokusebenza.
2. Chofoza ku- Vula Imenyu Yohlelo bese uqhafaza kufayela le- Amabhukumaka inketho ohlwini olubonisiwe.
I-3. Ku Amabhukumaka menu, chofoza inkinobho Phatha amabhukumaka option at the bottom of the list.
I-4. Ku Library isikrini, chofoza ku Ngenisa futhi Yenza Ikhophi Yasenqolobaneni button at the menu bar and click on the Thumela Amabhukumaka ku-HTML... option in the drop-down menu displayed.
I-5. Ku Khipha Ifayela Lamabhukumaka window, browse and select a location, and click on the Londoloza inkinobho yokulondoloza ifayela lamabhukumaka.
Step II: Create New User Profile
This section will introduce the method to create a new User Profile on the Firefox app to fix the Couldn’t load XPCOM error.
1. Qalisa Firefox uhlelo lokusebenza lwesiphequluli.
I-2. Thayipha mayelana: amaphrofayli in the URL address bar at the top and press the Faka ukhiye wokuvula Mayelana namaphrofayili iwindi.
3. Chofoza ku- Dala iphrofayela entsha inkinobho efasiteleni.
4. Okulandelayo, chofoza ku- Olandelayo inkinobho ku Siyakwamukela kuWizadi Yakha Iphrofayela.
5. Type a name for the Profile in the Faka igama elisha lephrofayela bese ucindezela inkinobho Qeda inkinobho efasiteleni ukuze udale Iphrofayela.
Qaphela: Chofoza on the Choose Folder… button to change the location for storing the User Profile name instead of the default location.
Funda futhi: Ukulungisa IFirefox Isivele Iyasebenza
Indlela 7: Faka kabusha iFirefox
The Firefox app installed on your PC might be corrupt or not properly installed. You can reinstall Firefox on your PC to fix the Couldn’t load XPCOM error.
Step I: Uninstall Firefox
The first step is to uninstall the existing version of the Firefox web browser on your PC using the Control Panel.
I-1. Cindezela u Ukhiye weWindows, thayipha iphaneli yokulawula bese uchofoza Vula.
2. Click on the option Isigaba ku Buka ngu drop-down menu and click on the Khipha uhlelo inketho ku Izinhlelo ikhanda.
I-3. Khetha I-Mozilla Firefox (x64 en-US) in the list, click on the Khipha inkinobho phezulu kwebha bese uchofoza ku- Yebo button on the UAC window.
4. Bese, chofoza inkinobho Olandelayo inkinobho ku Khipha i-Mozilla Firefox iwijethi.
5. Okulandelayo, chofoza ku- Khipha button in the next window.
6. Chofoza ku- Qeda button on the last window to completely uninstall the Firefox app.
I-7. Cindezela u IWindows+ E okhiye together to open the File Explorer and navigate to the This PC > Local Disk (C:) > Program Files > Mozilla Firefox ifolda.
8. Qhafaza kwesokudla ku- I-Mozilla Firefox folda bese uchofoza ku- Susa option on the list to delete the files.
Step II: Reinstall Firefox
The next step to fix the Couldn’t load XPCOM error is to reinstall the Firefox Web Browser on your PC.
1. Shaya i Ukhiye weWindows, thayipha i-Google Chrome bese uchofoza Vula.
Qaphela: You can use any web browser to download the Firefox browser on your PC.
2. Vula iwebhusayithi esemthethweni ye- Isiphequluli seMozilla Firefox on Google Chrome and click on the Landa i-Firefox inkinobho efasiteleni.
3. Double-click on the downloaded executable file IFirefox Installer.exe to run the installation file.
4. Linda kuze kuqedwe inqubo yokufaka.
5. Qalisa Firefox Web Browser app on your PC.
Funda futhi: Lungisa Akukho Umsindo kuFirefox Windows 10
Method 8: Modify Tor Web Browser Settings
If you are using the Tor Web browser, in addition to Firefox, the issues on the Tor browser may cause the Couldn’t load XPCOM error. To fix this error, you can try checking for the issues on the Tor browser using Firefox to fix the error.
I-1. Vula Firefox uhlelo lokusebenza.
2. Chofoza ku- Vula Imenyu Yohlelo bese uqhafaza kufayela le- Amasethingi option on the list displayed.
I-3. Ku General ithebhu, chofoza ku Izilungiselelo… inkinobho ku Izilungiselelo zenethiwekhi ingxenye.
I-4. Khetha Manual proxy configuration inketho on Izilungiselelo Zokuxhuma iwindi.
I-5. Thayipha SOCKS Host: 127.0.0.1 Port: 9050 ku Ummeleli we-HTTP field, thayipha 8080 ku Port field, and click on the OK inkinobho.
6. Bese, thayipha Cishe: hlela on the search bar of the Firefox browser and click on the Yamukela ubungozi bese uqhubeka inkinobho.
7. Finally, type inethiwekhi.proxy.socks_remote_dns kubha yokusesha bese uchofoza ku- guqula button to set the type of the entry to be weqiniso.
8. Manje, thayipha https://check.torptoject.org/ in the search bar on the Firefox browser and press the Faka key to check the issues with the Tor Browser.
Kunconywe:
The article discusses the methods to fix couldn’t load XPCOM Firefox error on Windows 10 PC. Try implementing the methods discussed in the article to fix the error and please leave your suggestions on the same in the comments section. If you have any queries on the Cannot load XPCOM error, post them in the comments.