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- Outdated Firefox- The outdated version of the Firefox app may cause this error.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.
Métode 1: Métode ngungkulan Dasar
The first approach to solve the Couldn’t load XPCOM error is to try the basic troubleshooting methods listed in this section.
1. Balikan deui 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 kakuatan button at the bottom-left corner, and click on the Uihan deui option to restart your PC.
2. Pariksa Sambungan Internét
An unstable Internet connection may hinder you from using the Firefox browser. You can check the speed of the connection using the Tés gancang 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. Ngajalankeun setélan ku mencét Windows + I konci babarengan.
2. Klik aplikasi setelan.
3. Klik aktip standar dina jandela kénca.
4. Scroll down and click on the current browser wéb.
5. Choose from the option as per your preference.
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4. Hapus Payil Sementara
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. Apdet 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. Jalankeun 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. Ngalaksanakeun System Mulangkeun
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. Pencét Konci Windows, jenis Firefox teras klik dina Ngajalankeun sakumaha administrator pilihan.
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. Pencét éta Konci Windows, jenis Firefox teras klik dina kabuka.
2. Klik di Open Application Menu button (indicated by the three horizontal lines) at the top-right corner of the home page and click on the setélan pilihan dina daptar dipintonkeun.
3. Dina umum tab, klik dina Mariksa apdet tombol di Pembaruan Firefox bagian.
4. Anjeun bakal ningali Firefox is up to date message on the Firefox Updates section.
Catetan: 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. Luncurkeun teh Firefox aplikasi ti Pilarian Windows Malar.
2. Salajengna, klik dina Open Application Menu tombol teras pencét dina Tulung pilihan dina daptar dipintonkeun.
3. Klik di Troubleshoot Mode… dina Firefox help jandela.
4. Ayeuna, klik dina Uihan deui tombol dina Balikan deui Firefox dina Modeu Troubleshoot jandela pop-up.
5. Klik di Anyarkeun Firefox tombol dina Open Firefox in Troubleshoot Mode confirmation window.
6. Lajeng, klik dina Anyarkeun Firefox tombol dina Refresh Firefox to its default settings jandela.
7. Tungtungna, pencét dina ngabereskeun tombol dina 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. buka Mozilla Firefox aplikasi ti Pilarian Windows Malar.
2. Klik di Open Application Menu tombol teras pencét dina Tulung pilihan dina daptar dipintonkeun.
3. Ayeuna, klik dina Troubleshoot Mode… dina Firefox help jandela.
4. Klik di kabuka tombol dina Balikan deui Firefox dina Modeu Troubleshoot jandela pop-up.
5. Salajengna, klik dina Open Application Menu tombol teras pencét dina Add-ons sareng téma pilihan dina daptar.
6. Klik di ekstensi tab on the left pane of the next window and toggle off the add-ons on the window.
7. Lajeng, klik dina tilu titik-titik horisontal button on the add-on and click on the mindahkeun button on the list.
8. Klik di mindahkeun 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. buka Mozilla Firefox aplikasi.
2. Klik di Open Application Menu tombol teras pencét dina tetengger option in the list displayed.
3. Dina tetengger menu, klik dina Ngatur tetengger option at the bottom of the list.
4. Dina taman pustaka layar, pencét dina Import and Backup button at the menu bar and click on the Export Bookmarks to HTML… option in the drop-down menu displayed.
5. Dina Export Bookmarks File window, browse and select a location, and click on the Simpen 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. Luncurkeun teh Firefox aplikasi browser.
2. ngetik ngeunaan: propil in the URL address bar at the top and press the asup konci pikeun muka About Profiles jandela.
3. Klik di Nyiptakeun Profil Anyar button on the window.
4. Salajengna, klik dina Teras tombol dina Welcome to the Create Profile Wizard.
5. Type a name for the Profile in the Lebetkeun nami profil énggal sawah teras klik dina ngabereskeun button in the window to create the Profile.
Catetan: Klik dina 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. Pencét Konci Windows, jenis panél kontrol teras klik dina kabuka.
2. Click on the option Kategori dina Témbongkeun ku drop-down menu and click on the Uninstall program pilihan dina program judul.
3. pilih Mozilla Firefox (x64 en-US) in the list, click on the uninstall button at the top of the bar and click on the nuhun tombol dina jandela UAC.
4. Lajeng, klik dina Teras tombol di Mozilla Firefox Uninstall wizard.
5. Salajengna, klik dina uninstall button in the next window.
6. Klik di ngabereskeun button on the last window to completely uninstall the Firefox app.
7. Pencét Windows+ E kenop together to open the File Explorer and navigate to the This PC > Local Disk (C:) > Program Files > Mozilla Firefox polder.
8. Pencét-katuhu dina Mozilla Firefox folder teras klik dina pupus 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. Pencét éta Konci Windows, jenis google krom teras klik dina kabuka.
Catetan: You can use any web browser to download the Firefox browser on your PC.
2. Buka ramatloka resmi ti Browser Mozilla Firefox on Google Chrome and click on the Undeur Firefox button on the window.
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. Luncurkeun teh 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. buka Firefox aplikasi.
2. Klik di Open Application Menu tombol teras pencét dina setélan pilihan dina daptar dipintonkeun.
3. Dina umum tab, klik dina Setélan… tombol di Setélan jaringan bagian.
4. pilih Manual proxy configuration pilihan dina Setélan Konéksi jandela.
5. ngetik SOCKS Host: 127.0.0.1 Port: 9050 dina HTTP proxy sawah, ngetik 8080 dina palabuhan field, and click on the OK tombol.
6. Lajeng, ngetik Ngeunaan: config on the search bar of the Firefox browser and click on the Nampi Resiko teras Teraskeun tombol.
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 bener.
8. Ayeuna, ngetik https://check.torptoject.org/ in the search bar on the Firefox browser and press the asup key to check the issues with the Tor Browser.
disarankeun:
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.