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- Outdated Firefox- The outdated version of the Firefox app may cause this error.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.
Fomba 1: Fomba famahana olana fototra
The first approach to solve the Couldn’t load XPCOM error is to try the basic troubleshooting methods listed in this section.
1. Avereno indray ny 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 key, click on the Power button at the bottom-left corner, and click on the Haverina velomina safidy hanombohana indray ny PC.
2. Jereo ny fifandraisana Internet
An unstable Internet connection may hinder you from using the Firefox browser. You can check the speed of the connection using the Fitsapana haingana 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. fandefasana Settings amin'ny tsindrio Windows + I fanalahidy miaraka.
2. Click on Apps faritra.
3. Click on Default apps eo amin'ny pane ankavia.
4. Scroll down and click on the current Web browser.
5. Choose from the option as per your preference.
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4. Fafao ireo fisie vonjimaika
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. Fanavaozana ny Windows
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. Manaova Windows Update Troubleshooter
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. Manaova System Restore
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. Tsindrio ny Windows key, karazana Firefox ary tsindrio ny Manaova toy ny mpandrindra safidy.
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. Tsindrio ny Windows key, karazana Firefox ary tsindrio eo amin'ny Open.
2. Tsindrio ny Sokafy ny Menu Application button (indicated by the three horizontal lines) at the top-right corner of the home page and click on the Settings safidy eo amin'ny lisitra aseho.
3. Ao amin'ny General tab, tsindrio ny Hijerena ny vaovao farany bokotra ao amin'ny Fanavaozana ny Firefox faritra.
4. Ho hitanao ny Vaovao farany ny Firefox message on the Firefox Updates section.
Fanamarihana: 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. Mandrosoa ny Firefox app from the Windows Search bar.
2. Manaraka, tsindrio ny Sokafy ny Menu Application bokotra ary kitiho ny Vonjeo safidy eo amin'ny lisitra aseho.
3. Tsindrio ny Troubleshoot Mode… ao amin'ny Fanampiana Firefox varavarankely.
4. Ankehitriny, tsindrio ny Haverina velomina bokotra eo amin'ny Avereno indray ny Firefox amin'ny fomba famahana olana varavarankely pop-up.
5. Tsindrio ny Hamafiso Firefox bokotra eo amin'ny Open Firefox in Troubleshoot Mode varavarankely fanamafisana.
6. Avy eo, tsindrio ny Hamafiso Firefox bokotra eo amin'ny Refresh Firefox to its default settings varavarankely.
7. Farany, kitiho ny farany bokotra eo amin'ny 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. Sokafy ny Mozilla Firefox app from the Windows Search bar.
2. Tsindrio ny Sokafy ny Menu Application bokotra ary kitiho ny Vonjeo safidy eo amin'ny lisitra aseho.
3. Ankehitriny, tsindrio ny Troubleshoot Mode… ao amin'ny Fanampiana Firefox varavarankely.
4. Tsindrio ny Open bokotra eo amin'ny Avereno indray ny Firefox amin'ny fomba famahana olana varavarankely pop-up.
5. Manaraka, tsindrio ny Sokafy ny Menu Application bokotra ary kitiho ny Fanampiny sy lohahevitra safidy ao amin'ny lisitra.
6. Tsindrio ny fanitarana tab on the left pane of the next window and toggle eny the add-ons on the window.
7. Avy eo, tsindrio ny teboka telo mitsivalana button on the add-on and click on the Esory button on the list.
8. Tsindrio ny Esory 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. Sokafy ny Mozilla Firefox App.
2. Tsindrio ny Sokafy ny Menu Application bokotra ary kitiho ny Bookmarks safidy ao amin'ny lisitra aseho.
3. Ao amin'ny Bookmarks menu, tsindrio ny Mitantana tsoratadidy option at the bottom of the list.
4. Ao amin'ny fitehirizam-boky screen, tsindrio ny Import sy Backup button at the menu bar and click on the Manondrana tsoratadidy amin'ny HTML… option in the drop-down menu displayed.
5. Ao amin'ny Export Bookmarks File window, browse and select a location, and click on the Save bokotra hitahiry ny rakitra tsoratadidy.
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. Mandrosoa ny Firefox fampiharana navigateur.
2. Type momba: profiles in the URL address bar at the top and press the Midira lakile hanokatra ny Momba ny Profiles varavarankely.
3. Tsindrio ny Mamorona mombamomba vaovao bokotra eo amin'ny varavarankely.
4. Manaraka, tsindrio ny Manaraka bokotra eo amin'ny Tongasoa eto amin'ny Create Profile Wizard.
5. Type a name for the Profile in the Ampidiro ny anarana vaovao saha ary tsindrio ny farany bokotra eo amin'ny varavarankely mba hamoronana ny Profile.
Fanamarihana: Tsindrio eo amin'ny Choose Folder… button to change the location for storing the User Profile name instead of the default location.
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Fomba 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. Tsindrio ny Windows key, karazana takelaka fikirakirana ary tsindrio eo amin'ny Open.
2. Tsindrio ny safidy SOKAJY ao amin'ny Hizaha drop-down menu and click on the Esory ny programa iray safidy ao amin'ny Programs sasin-tenin'ny.
3. Select the Mozilla Firefox (x64 en-US) in the list, click on the esory bokotra eo an-tampon'ny bara ary tsindrio ny Eny button on the UAC window.
4. Avy eo, tsindrio ny Manaraka bokotra ao amin'ny Mozilla Firefox Uninstall Magicien.
5. Manaraka, tsindrio ny esory button in the next window.
6. Tsindrio ny farany button on the last window to completely uninstall the Firefox app.
7. Tsindrio ny Windows+ E fanalahidy together to open the File Explorer and navigate to the This PC > Local Disk (C:) > Program Files > Mozilla Firefox fampirimana.
8. Kitiho havanana amin'ny Mozilla Firefox folder ary tsindrio ny Fafao 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. Tsindrio ny Windows key, karazana google chrome ary tsindrio eo amin'ny Open.
Fanamarihana: You can use any web browser to download the Firefox browser on your PC.
2. Sokafy ny tranonkala ofisialin'ny Browser Mozilla Firefox on Google Chrome and click on the Download Firefox bokotra eo amin'ny varavarankely.
3. Double-click on the downloaded executable file Firefox Installer.exe to run the installation file.
4. Andraso ny dingana fametrahana ho vita.
5. Mandrosoa ny 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. Sokafy ny Firefox App.
2. Tsindrio ny Sokafy ny Menu Application bokotra ary kitiho ny Settings safidy eo amin'ny lisitra aseho.
3. Ao amin'ny General tab, tsindrio ny Settings ... bokotra ao amin'ny Network Settings faritra.
4. Select the Manual proxy configuration safidy amin'ny Fikirana fifandraisana varavarankely.
5. Type SOCKS Host: 127.0.0.1 Port: 9050 ao amin'ny Http proxy saha, karazany 8080 ao amin'ny Port field, and click on the OK bokotra.
6. Avy eo, soraty About: config on the search bar of the Firefox browser and click on the Ekeo ny risika dia tohizo bokotra.
7. Finally, type network.proxy.socks_remote_dns ao amin'ny bara fitadiavana ary tsindrio ny Toggle button to set the type of the entry to be marina.
8. Ankehitriny, soraty https://check.torptoject.org/ in the search bar on the Firefox browser and press the Midira key to check the issues with the Tor Browser.
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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.