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- Outdated Firefox- The outdated version of the Firefox app may cause this error.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.
Methode 1: Basismethoden voor probleemoplossing
The first approach to solve the Couldn’t load XPCOM error is to try the basic troubleshooting methods listed in this section.
1. Start de pc opnieuw op
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 Dakramen en raamkozijnen toets, klik op de Power button at the bottom-left corner, and click on the Herstart optie om uw pc opnieuw op te starten.
2. Controleer Internetverbinding
An unstable Internet connection may hinder you from using the Firefox browser. You can check the speed of the connection using the Snelheidstest 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. Lancering Instellingen door te drukken Windows + I-toetsen samen.
2. Klik op Apps instellen.
3. Klik op Standaard apps op het linkerdeelvenster.
4. Scroll down and click on the current Web Browser.
5. Choose from the option as per your preference.
Lees ook: Hoe u kunt oplossen dat Firefox pagina's niet laadt
4. Verwijder tijdelijke bestanden
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. Herstel corrupte bestanden
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. Werk Windows bij
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. Voer de probleemoplosser voor Windows Update uit
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. Voer Systeemherstel uit
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.
Lees ook: Herstel uw verbinding is niet veilig Fout in 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. druk de Windows-toetstype firefox en klik op de Als administrator uitvoeren optie.
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. Druk op de Windows-toetstype Firefox en klik op Openen.
2. Klik op het Open het applicatiemenu button (indicated by the three horizontal lines) at the top-right corner of the home page and click on the Instellingen optie in de weergegeven lijst.
3. In de Algemeen tab, klik op de Controleren op updates knop in de Firefox-updates pagina.
4. Je zult het zien Firefox is up-to-date message on the Firefox Updates section.
Opmerking: 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. Lanceer de Firefox app van de Windows Search bar.
2. Klik vervolgens op de Open het applicatiemenu knop en klik op de Help optie in de weergegeven lijst.
3. Klik op het Modus oplossen… in de Firefox-hulp venster.
4. Klik nu op de Herstart knop op de Start Firefox opnieuw in de probleemoplossingsmodus pop-up venster.
5. Klik op het Vernieuw Firefox knop op de Open Firefox in Troubleshoot Mode bevestigingsvenster.
6. Klik vervolgens op de Vernieuw Firefox knop op de Refresh Firefox to its default settings venster.
7. Klik ten slotte op het Finish knop op de Importeren voltooid window to Refresh Firefox completely.
Lees ook: Fout bij server niet gevonden in Firefox repareren
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. Open de Mozilla Firefox app van de Windows Search bar.
2. Klik op het Open het applicatiemenu knop en klik op de Help optie in de weergegeven lijst.
3. Klik nu op de Modus oplossen… in de Firefox-hulp venster.
4. Klik op het Openen knop op de Start Firefox opnieuw in de probleemoplossingsmodus pop-up venster.
5. Klik vervolgens op de Open het applicatiemenu knop en klik op de Add-ons en thema's optie op de lijst.
6. Klik op het uitbreidingen tab on the left pane of the next window and toggle korting the add-ons on the window.
7. Klik vervolgens op de drie horizontale stippen button on the add-on and click on the verwijderen knop op de lijst.
8. Klik op het verwijderen 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. Open de mozilla Firefox app.
2. Klik op het Open het applicatiemenu knop en klik op de bladwijzers optie in de weergegeven lijst.
3. In de bladwijzers menu, klik op de Beheer bladwijzers optie onderaan de lijst.
4. In de Bibliotheek scherm, klik op de Importeren en reservekopie button at the menu bar and click on the Exporteer bladwijzers naar HTML option in the drop-down menu displayed.
5. In de Bladwijzerbestand exporteren window, browse and select a location, and click on the Bespaar knop om het bladwijzerbestand op te slaan.
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. Lanceer de Firefox browser-app.
2. Type over: profielen in the URL address bar at the top and press the Enter sleutel om het te openen Over profielen venster.
3. Klik op het Maak een nieuw profiel aan knop op het raam.
4. Klik vervolgens op de Volgende knop op de Welkom bij de wizard Profiel maken.
5. Type a name for the Profile in the Voer een nieuwe profielnaam in veld en klik op de Finish in het venster om het profiel aan te maken.
Opmerking: Klik op de Choose Folder… button to change the location for storing the User Profile name instead of the default location.
Lees ook: Fix Firefox is al actief
Methode 7: Installeer Firefox opnieuw
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. druk de Windows-toetstype bedieningspaneel en klik op Openen.
2. Klik op de optie Categorie in de View by vervolgkeuzemenu en klik op de Een programma verwijderen optie in het Programma's rubriek.
3. Selecteer de Mozilla Firefox (x64 nl-VS) in the list, click on the Installatie ongedaan maken knop bovenaan de balk en klik op de Ja button on the UAC window.
4. Klik vervolgens op de Volgende knop in de Mozilla Firefox verwijderen wizard.
5. Klik vervolgens op de Installatie ongedaan maken knop in het volgende venster.
6. Klik op het Finish button on the last window to completely uninstall the Firefox app.
7. druk de Windows+E toetsen together to open the File Explorer and navigate to the This PC > Local Disk (C:) > Program Files > Mozilla Firefox map.
8. Klik met de rechtermuisknop op de Mozilla Firefox map en klik op de Verwijder 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. Druk op de Windows-toetstype Google Chrome en klik op Openen.
Opmerking: You can use any web browser to download the Firefox browser on your PC.
2. Open de officiële website van de Mozilla Firefox-browser on Google Chrome and click on the Download Firefox knop op het raam.
3. Double-click on the downloaded executable file Firefox Installer.exe to run the installation file.
4. Wacht tot het installatieproces is voltooid.
5. Lanceer de Firefox Web Browser app on your PC.
Lees ook: Fix Geen geluid in Firefox op 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. Open de Firefox app.
2. Klik op het Open het applicatiemenu knop en klik op de Instellingen optie in de weergegeven lijst.
3. In de Algemeen tab, klik op de Instellingen ... knop in de Netwerkinstellingen pagina.
4. Selecteer de Handmatige proxyconfiguratie optie op de Verbindingsinstellingen venster.
5. Type SOCKS Host: 127.0.0.1 Port: 9050 in de Http-proxy veld soort 8080 in de Haven veld, en klik op de OK knop.
6. Typ vervolgens Over: config on the search bar of the Firefox browser and click on the Accepteer het risico en ga verder knop.
7. Finally, type network.proxy.socks_remote_dns in the search bar and click on the toggle button to set the type of the entry to be waar.
8. Typ nu https://check.torptoject.org/ in the search bar on the Firefox browser and press the Enter key to check the issues with the Tor Browser.
Aanbevolen:
In het artikel worden de methoden besproken die u kunt oplossen 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.