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- Outdated Firefox- The outdated version of the Firefox app may cause this error.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.
Mokhoa oa 1: Mekhoa ea Motheo ea Tharollo ea Mathata
The first approach to solve the Couldn’t load XPCOM error is to try the basic troubleshooting methods listed in this section.
1. Qala hape 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 konopo, tobetsa ea matla button at the bottom-left corner, and click on the Qala hape khetho ea ho qala PC ea hau bocha.
2. Sheba Khokahano ea Marang-rang
An unstable Internet connection may hinder you from using the Firefox browser. You can check the speed of the connection using the Teko ea lebelo 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. Qala Settings ka ho hatella Linotlolo tsa Windows + I hammoho.
2. Tobetsa ho Apps moralo.
3. Tobetsa ho Liphetho tsa li-apps ka lehlakoreng le letšehali.
4. Scroll down and click on the current Web seshebisi.
5. Choose from the option as per your preference.
Hape Bala: Mokhoa oa ho lokisa Firefox e sa kenyeng Maqephe
4. Tlosa lifaele tsa nakoana
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. Ntlafatsa 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. Matha 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. Etsa Tsosoloso ea Sisteme
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.
Hape Bala: Lokisa Khokahano ea Hau ha se Phoso e Sireletsehileng ho Firefox
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. Tšoaea ka Mochini oa Windows, taka Firefox mme o tobetsa ho Mathang e le mookameli kgetho.
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. Otla the Mochini oa Windows, taka Firefox Mme o tobetsa Open.
2. Tlanya ho Bula Menu ya Tshebediso button (indicated by the three horizontal lines) at the top-right corner of the home page and click on the Settings kgetho lethathamong le bontšitsoeng.
3. Ho General tab, tobetsa Sheba lisebelisoa konopo ho Lisebelisoa tsa Firefox karolo.
4. O tla bona Firefox e nchafalitsoe message on the Firefox Updates section.
Hlokomela: 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. Qolla file ea Firefox app ho tswa ho Ho Batla Windows bar.
2. Ka mor'a moo, tobetsa ea Bula Menu ya Tshebediso ebe o tobetsa konopo ea Thusa kgetho lethathamong le bontšitsoeng.
3. Tlanya ho Troubleshoot Mode… ka Thuso ea Firefox fensetere.
4. Joale, tobetsa ea Qala hape konopo ho Qala Firefox bocha ka Mokhoa oa ho rarolla mathata itlhahela fensetere.
5. Tlanya ho Khutlisa Firefox konopo ho Open Firefox in Troubleshoot Mode fensetere ea netefatso.
6. Joale, tobetsa ea Khutlisa Firefox konopo ho Refresh Firefox to its default settings fensetere.
7. Qetellong, tobetsa ho fihlela qetellong konopo ho Import Complete window to Refresh Firefox completely.
Hape Bala: Lokisa Phoso ea Seva e sa Fumaneha ho Firefox
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. bula Mozilla Firefox app ho tswa ho Ho Batla Windows bar.
2. Tlanya ho Bula Menu ya Tshebediso ebe o tobetsa konopo ea Thusa kgetho lethathamong le bontšitsoeng.
3. Joale, tobetsa ea Troubleshoot Mode… ka Thuso ea Firefox fensetere.
4. Tlanya ho Open konopo ho Qala Firefox bocha ka Mokhoa oa ho rarolla mathata itlhahela fensetere.
5. Ka mor'a moo, tobetsa ea Bula Menu ya Tshebediso ebe o tobetsa konopo ea Li-add-on le lihlooho kgetho lethathamong.
6. Tlanya ho Extensions tab on the left pane of the next window and toggle tima the add-ons on the window.
7. Joale, tobetsa ea matheba a mararo a otlolohileng button on the add-on and click on the tlosa button on the list.
8. Tlanya ho tlosa 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. bula Mozilla Firefox app e.
2. Tlanya ho Bula Menu ya Tshebediso ebe o tobetsa konopo ea Bookmarks khetho lethathamong le bontšitsoeng.
3. Ho Bookmarks menu, tobetsa konopo Laola li-bookmark option at the bottom of the list.
4. Ho Library skrine, tobetsa ho Kenya le ho Boloka button at the menu bar and click on the Romella Li-bookmark ho HTML… option in the drop-down menu displayed.
5. Ho Romella Li-bookmark File window, browse and select a location, and click on the Save konopo ho boloka faele ea li-bookmark.
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. Qolla file ea Firefox sesebelisoa sa sebatli.
2. Tšoaea mabapi le: litlaleho in the URL address bar at the top and press the kena senotlolo sa ho bula Mabapi le Profiles fensetere.
3. Tlanya ho Theha Profaele e Ncha konopo e fensetereng.
4. Ka mor'a moo, tobetsa ea E 'ngoe konopo ho Rea u amohela ho Theha Profaele Wizate.
5. Type a name for the Profile in the Kenya lebitso le lecha la boemo tšimong ebe o tobetsa konopo ea fihlela qetellong ka fensetere ho theha Profile.
Hlokomela: Tobetsa Choose Folder… button to change the location for storing the User Profile name instead of the default location.
Hape Bala: Lokisa Firefox e se e ntse e sebetsa
Mokhoa oa 7: Kenya Firefox hape
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. Tšoaea ka Mochini oa Windows, taka lebokose la taolo Mme o tobetsa Open.
2. Tobetsa ho khetho Category ka Sheba ka drop-down menu and click on the Senya lenaneo khetho ho Programs hlooho.
3. Khetha ea Mozilla Firefox (x64 en-US) in the list, click on the Tlosa konopo ka holimo ho bar ebe o tobetsa konopo ea E button on the UAC window.
4. Joale, tobetsa ea E 'ngoe konopo ho Tlosa Mozilla Firefox wizard.
5. Ka mor'a moo, tobetsa ea Tlosa button in the next window.
6. Tlanya ho fihlela qetellong button on the last window to completely uninstall the Firefox app.
7. Tšoaea ka Windows+ E linotlolo together to open the File Explorer and navigate to the This PC > Local Disk (C:) > Program Files > Mozilla Firefox Folder.
8. Tobetsa ka ho le letona ho Mozilla Firefox foldareng ebe o tobetsa konopo ea hlakola 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. Otla the Mochini oa Windows, taka google chrome Mme o tobetsa Open.
Hlokomela: You can use any web browser to download the Firefox browser on your PC.
2. Bula websaeteng ya semmuso ya Sebatli sa Mozilla Firefox on Google Chrome and click on the Tlosa Firefox konopo e fensetereng.
3. Double-click on the downloaded executable file Firefox Installer.exe to run the installation file.
4. Wait for the installation process to complete.
5. Qolla file ea Firefox Web Browser app on your PC.
Hape Bala: Lokisa ha ho na molumo ho Firefox ho 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.
1. bula Firefox app e.
2. Tlanya ho Bula Menu ya Tshebediso ebe o tobetsa konopo ea Settings kgetho lethathamong le bontšitsoeng.
3. Ho General tab, tobetsa Litlhophiso… konopo ho Mefuta ea Mecha karolo.
4. Khetha ea Tokiso ea proxy ka letsoho khetho ho Litlhophiso tsa Khokahano fensetere.
5. Tšoaea SOCKS Host: 127.0.0.1 Port: 9050 ka Moemeli oa HTTP tšimo, thapa 8080 ka Port field, and click on the OK konopo.
6. Joale, thaepa Mabapi le: config on the search bar of the Firefox browser and click on the Amohela Kotsi 'me U Tsoele Pele konopo.
7. Finally, type network.proxy.socks_remote_dns ka bareng ea ho batla ebe o tobetsa ho toggle button to set the type of the entry to be 'nete.
8. Joale, ngola https://check.torptoject.org/ in the search bar on the Firefox browser and press the kena key to check the issues with the Tor Browser.
Recommended:
Sehlooho se bua ka mekhoa ea ho lokisa 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.