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- Outdated Firefox- The outdated version of the Firefox app may cause this error.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.
Pamaagi 1: Basic Troubleshooting Methods
The first approach to solve the Couldn’t load XPCOM error is to try the basic troubleshooting methods listed in this section.
1. I-restart ang 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 Gahum button at the bottom-left corner, and click on the Pag-restart option to restart your PC.
2. Susiha ang Koneksyon sa Internet
An unstable Internet connection may hinder you from using the Firefox browser. You can check the speed of the connection using the Pagsulay sa tulin 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. Paglusad setting pinaagi sa dinalian Mga yawe sa Windows + I sa tingub.
2. I-klik ang apps pagpahimutang.
3. I-klik ang Mga default nga mga app sa wala nga pane.
4. Scroll down and click on the current Web browser.
5. Choose from the option as per your preference.
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4. Pagtangtang Temporary Files
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. Pag-ayo sa 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. Pag-update sa 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. Pagdagan ang Mga Pag-update sa Update sa Windows
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. Buhata ang 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. Ipadayon ang Windows key, matang firefox ug i-klik ang Pagdalagan ingon administrador kapilian.
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. Hit sa Windows key, matang License ug i-klik sa Open.
2. I-klik ang Open Application Menu button (indicated by the three horizontal lines) at the top-right corner of the home page and click on the setting option on the list displayed.
3. Diha sa Kinatibuk-ang tab, i-klik ang Susiha ang mga update button sa Mga Update sa Firefox seksyon.
4. Makita nimo ang Ang Firefox kay pinakabag-o message on the Firefox Updates section.
Mubo nga sulat: 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. Ilunsad ang License app gikan sa Pagpangita sa Windows bar
2. Sunod, i-klik ang Open Application Menu buton ug pag-klik sa Tabangi option on the list displayed.
3. I-klik ang Troubleshoot Mode… sa Firefox help bintana.
4. Karon, i-klik ang Pag-restart button sa I-restart ang Firefox sa Troubleshoot Mode pop-up nga bintana.
5. I-klik ang Palihug sa Firefox button sa Open Firefox in Troubleshoot Mode confirmation window.
6. Unya, i-klik ang Palihug sa Firefox button sa Refresh Firefox to its default settings bintana.
7. Sa katapusan, i-klik ang Humana button sa 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. Ablihi ang Mozilla License app gikan sa Pagpangita sa Windows bar
2. I-klik ang Open Application Menu buton ug pag-klik sa Tabangi option on the list displayed.
3. Karon, i-klik ang Troubleshoot Mode… sa Firefox help bintana.
4. I-klik ang Open button sa I-restart ang Firefox sa Troubleshoot Mode pop-up nga bintana.
5. Sunod, i-klik ang Open Application Menu buton ug pag-klik sa Mga add-on ug tema option on the list.
6. I-klik ang extensions tab sa wala nga pane sa sunod nga bintana ug i-toggle sa ang mga add-on sa bintana.
7. Unya, i-klik ang tulo nga pinahigda nga tuldok button sa add-on ug i-klik ang Kuhaa buton sa lista.
8. I-klik ang Kuhaa 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. Ablihi ang Mozilla License app.
2. I-klik ang Open Application Menu buton ug pag-klik sa bookmark option in the list displayed.
3. Diha sa bookmark menu, i-klik ang Pagdumala sa mga bookmark option at the bottom of the list.
4. Diha sa Library screen, i-klik ang Import and Backup button at the menu bar and click on the Export Bookmarks to HTML… option in the drop-down menu displayed.
5. Diha sa Export Bookmarks File window, browse and select a location, and click on the Luwasa 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. Ilunsad ang License browser app.
2. Matang bahin sa: mga profile in the URL address bar at the top and press the Pagsulod yawi aron maablihan ang About Profiles bintana.
3. I-klik ang Paghimo usa ka Bag-ong Profile buton sa bintana.
4. Sunod, i-klik ang sunod button sa Welcome to the Create Profile Wizard.
5. Type a name for the Profile in the Pagsulud bag-ong ngalan sa profile field ug i-klik ang Humana button in the window to create the Profile.
Mubo nga sulat: I-klik ang Choose Folder… button to change the location for storing the User Profile name instead of the default location.
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Pamaagi 7: I-install pag-usab ang 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. Ipadayon ang Windows key, matang control panel ug i-klik sa Open.
2. Click on the option Kategoriya sa View by drop-down menu and click on the Pag-uninstall sa usa ka programa kapilian sa mga programa ulohan.
3. Pilia ang Mozilla Firefox (x64 en-US) sa lista, i-klik ang Pag-uninstall button sa ibabaw sa bar ug i-klik ang Oo buton sa bintana sa UAC.
4. Unya, i-klik ang sunod button sa Pag-uninstall sa Mozilla Firefox wizard.
5. Sunod, i-klik ang Pag-uninstall buton sa sunod nga bintana.
6. I-klik ang Humana buton sa katapusan nga bintana aron hingpit nga ma-uninstall ang Firefox app.
7. Ipadayon ang Windows+ E mga yawe dungan sa pag-abli sa File Explorer ug pag-navigate sa Kini nga PC> Local Disk (C :)> Program Files> Mozilla Firefox folder.
8. Pag-klik sa tuo sa Mozilla License folder ug i-klik ang Tangtanga kapilian sa lista aron mapapas ang mga file.
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. Hit sa Windows key, matang google chrome ug i-klik sa Open.
Mubo nga sulat: Mahimo nimong gamiton ang bisan unsang web browser aron ma-download ang Firefox browser sa imong PC.
2. Ablihi ang opisyal nga website sa Mozilla Firefox browser sa Google Chrome ug i-klik ang I-download ang Firefox buton sa bintana.
3. Dobleng pag-klik sa na-download nga executable file Ang Firefox Installer.exe sa pagdagan sa instalasyon file.
4. Paghulat nga makompleto ang proseso sa pag-instalar.
5. Ilunsad ang License Web Browser app sa imong 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. Ablihi ang License app.
2. I-klik ang Open Application Menu buton ug pag-klik sa setting option on the list displayed.
3. Diha sa Kinatibuk-ang tab, i-klik ang Mga setting… button sa Mga Setting sa Network seksyon.
4. Pilia ang Manual proxy configuration kapilian sa Mga setting sa koneksyon bintana.
5. Matang SOCKS Host: 127.0.0.1 Port: 9050 sa Http nga proxy field, type 8080 sa Port field, and click on the OK button.
6. Unya, type Mahitungod sa: config on the search bar of the Firefox browser and click on the Dawata ang Peligro ug Pagpadayon button.
7. Finally, type network.proxy.socks_remote_dns sa search bar ug i-klik ang toggle button to set the type of the entry to be tinuod nga.
8. Karon, i-type https://check.torptoject.org/ in the search bar on the Firefox browser and press the Pagsulod key to check the issues with the Tor Browser.
girekomendar:
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.