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- Outdated Firefox- The outdated version of the Firefox app may cause this error.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 yoku-1: Iindlela ezisisiseko zokulungisa iingxaki
The first approach to solve the Couldn’t load XPCOM error is to try the basic troubleshooting methods listed in this section.
1. Qala kwakhona iPC
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 key, click on the amandla button at the bottom-left corner, and click on the Phinda Uqalele option to restart your PC.
2. Jonga uQhakamshelwano lwe-Intanethi
An unstable Internet connection may hinder you from using the Firefox browser. You can check the speed of the connection using the Uvavanyo lwesantya 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:
1. Qalisa izicwangciso ngokucindezela Izitshixo zeWindows + I kunye.
2. Cofa kwi apps ukuseta.
3. Cofa kwi Iifayile ezizenzekelayo kwicala lasekhohlo.
4. Scroll down and click on the current Isikhangeli sewebhu.
5. Choose from the option as per your preference.
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4. Cima iifayili zethutyana
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. Repair Corrupt Files
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. Hlaziya iiWindows
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 Windows uHlaziyo lweeNgxaki
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 uBuyiselo lweNkqubo
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.
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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.
1. Cinezela Isitshixo seWindows, thayipha firefox kwaye nqakraza Ukusebenza njengomlawuli ukhetho.
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. Betha i Isitshixo seWindows, thayipha Firefox kwaye nqakraza vula.
2. Cofa kwi Open Application Menu button (indicated by the three horizontal lines) at the top-right corner of the home page and click on the izicwangciso option on the list displayed.
3. Kwi ngokubanzi ithebhu, nqakraza Jonga uvuselelo iqhosha kwi Uhlaziyo lweFirefox icandelo.
4. Uya kubona i Firefox is up to date message on the Firefox Updates section.
Phawula: 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 inkqubo ye- Firefox app evela kwi- Usesho lweWindows ibar.
2. Okulandelayo, cofa kwi Open Application Menu iqhosha kwaye ucofe kwi Nceda option on the list displayed.
3. Cofa kwi Troubleshoot Mode… kwi Firefox help window.
4. Ngoku, cofa kwi Phinda Uqalele iqhosha kwi Qala kwakhona iFirefox kwiNdlela yokuJonga ingxaki ifestile ezivelelayo.
5. Cofa kwi Hlaziya kwakhona iFilifox iqhosha kwi Open Firefox in Troubleshoot Mode ifestile yokuqinisekisa.
6. Emva koko, cofa kwi Hlaziya kwakhona iFilifox iqhosha kwi Refresh Firefox to its default settings window.
7. Okokugqibela, cofa apha Gqiba iqhosha kwi Import Complete window to Refresh Firefox completely.
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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.
1. Vula Mozilla Firefox app evela kwi- Usesho lweWindows ibar.
2. Cofa kwi Open Application Menu iqhosha kwaye ucofe kwi Nceda option on the list displayed.
3. Ngoku, cofa kwi Troubleshoot Mode… kwi Firefox help window.
4. Cofa kwi vula iqhosha kwi Qala kwakhona iFirefox kwiNdlela yokuJonga ingxaki ifestile ezivelelayo.
5. Okulandelayo, cofa kwi Open Application Menu iqhosha kwaye ucofe kwi Izongezo kunye nemixholo option on the list.
6. Cofa kwi izandiso tab on the left pane of the next window and toggle off the add-ons on the window.
7. Emva koko, cofa kwi amachaphaza amathathu oxwesileyo button on the add-on and click on the Susa button on the list.
8. Cofa kwi 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.
1. Vula Mozilla Firefox app.
2. Cofa kwi Open Application Menu iqhosha kwaye ucofe kwi bookmarks option in the list displayed.
3. Kwi bookmarks menu, cofa kwi Lawula amanqaku encwadi option at the bottom of the list.
4. Kwi IThala leencwadi isikrini, nqakraza Import and Backup button at the menu bar and click on the Export Bookmarks to HTML… option in the drop-down menu displayed.
5. Kwi Export Bookmarks File window, browse and select a location, and click on the Gcina button to save the bookmarks file.
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 inkqubo ye- Firefox usetyenziso lwebhrawuza.
2. Uhlobo malunga: Iiprofayili in the URL address bar at the top and press the faka isitshixo sokuvula ifayile About Profiles window.
3. Cofa kwi Yenza iProfayile entsha button on the window.
4. Okulandelayo, cofa kwi Okulandelayo iqhosha kwi Welcome to the Create Profile Wizard.
5. Type a name for the Profile in the Ngenisa igama elitsha leprofayile indawo kwaye nqakraza kwi Gqiba button in the window to create the Profile.
Phawula: Nqakraza kwi Choose Folder… button to change the location for storing the User Profile name instead of the default location.
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Method 7: Reinstall Firefox
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.
1. Cinezela Isitshixo seWindows, thayipha iphaneli yokulawula kwaye nqakraza vula.
2. Cofa ukhetho udidi kwi Jonga nge drop-down menu and click on the Khupha inkqubo ukhetho kwi Iinkqubo intloko.
3. Khetha Mozilla Firefox (x64 en-US) in the list, click on the Khipha button at the top of the bar and click on the Ewe iqhosha kwi UAC window.
4. Emva koko, cofa kwi Okulandelayo iqhosha kwi Mozilla Firefox Uninstall iwizard.
5. Okulandelayo, cofa kwi Khipha button in the next window.
6. Cofa kwi Gqiba button on the last window to completely uninstall the Firefox app.
7. Cinezela IWindows+ E izitshixo together to open the File Explorer and navigate to the This PC > Local Disk (C:) > Program Files > Mozilla Firefox ifolda.
8. Cofa ekunene kwi Mozilla Firefox ulawulo kwaye nqakraza kwi 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. Betha i Isitshixo seWindows, thayipha Google chrome kwaye nqakraza vula.
Phawula: You can use any web browser to download the Firefox browser on your PC.
2. Open the official website of the Isikhangeli seMozilla Firefox on Google Chrome and click on the Khuphela iFiFiFi button on the window.
3. Double-click on the downloaded executable file IFirefox Installer.exe to run the installation file.
4. Linda inkqubo yokufakela ukuba igqitywe.
5. Qalisa inkqubo ye- Firefox Web Browser app on your PC.
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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.
1. Vula Firefox app.
2. Cofa kwi Open Application Menu iqhosha kwaye ucofe kwi izicwangciso option on the list displayed.
3. Kwi ngokubanzi ithebhu, nqakraza NONE iqhosha kwi Izicwangciso zenethiwekhi icandelo.
4. Khetha Manual proxy configuration ukhetho kwi Useto lodibaniso window.
5. Uhlobo SOCKS Host: 127.0.0.1 Port: 9050 kwi Ummeli weHTTP intsimi, thayipha 8080 kwi izibuko field, and click on the OK iqhosha.
6. Emva koko, chwetheza Malunga: lungiselela on the search bar of the Firefox browser and click on the Yamkela umngcipheko kwaye uqhubeke iqhosha.
7. Finally, type network.proxy.socks_remote_dns kwibar yokukhangela kwaye nqakraza kwi guqula button to set the type of the entry to be oyinyaniso.
8. Ngoku, chwetheza 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.
Ithethelelwe:
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.