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- Outdated Firefox- The outdated version of the Firefox app may cause this error.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.
Usoro 1: Isi Nchọpụta nsogbu ụzọ
The first approach to solve the Couldn’t load XPCOM error is to try the basic troubleshooting methods listed in this section.
1. Malitegharịa ekwentị 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 igodo, pịa na ike button at the bottom-left corner, and click on the Malitegharịa ekwentị nhọrọ ịmalitegharị PC gị.
2. Lelee njikọ Ịntanetị
An unstable Internet connection may hinder you from using the Firefox browser. You can check the speed of the connection using the Nnwale ọsọ ọsọ 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. Mwepụta Settings site na ịpị Igodo Windows + I ọnụ.
2. Pịa na Apps nhazi.
3. Pịa na Ihe ngwugwu anatara n'aka ekpe.
4. Scroll down and click on the current Nchọgharị weebụ.
5. Choose from the option as per your preference.
Gụọ kwa: How to Fix Firefox Not Loading Pages
4. Hichapụ Nwa Oge faịlụ
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. Melite 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. Na-agba Windows Windows Nsogbu Ntanetị
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. Mee System Weghachi
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. Pịa Igodo Windows, ụdị firefox ma pịa na Na-agba ọsọ dị ka onye nlekọta nhọrọ.
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. Kpọọ Igodo Windows, ụdị Firefox na pịa Open.
2. Pịa na Mepee NchNhr ngwa button (indicated by the three horizontal lines) at the top-right corner of the home page and click on the Settings nhọrọ na ndepụta egosiri.
3. Na General taabụ, pịa na Lelee maka mmelite bọtịnụ na Mmelite Firefox ngalaba.
4. Ị ga-ahụ Firefox is up to date message on the Firefox Updates section.
Cheta na: 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. Mwepụta nke Firefox ngwa si Windows Search mgbochi
2. Ọzọ, pịa na Mepee NchNhr ngwa bọtịnụ ma pịa na Enyemaka nhọrọ na ndepụta egosiri.
3. Pịa na Troubleshoot Mode… na Firefox help window.
4. Ugbu a, pịa na Malitegharịa ekwentị bọtịnụ na Malitegharịa ekwentị Firefox na ọnọdụ nsogbu windo mmapụta.
5. Pịa na Megharia Firefox bọtịnụ na Open Firefox in Troubleshoot Mode confirmation window.
6. Mgbe ahụ, pịa na Megharia Firefox bọtịnụ na Refresh Firefox to its default settings window.
7. N'ikpeazụ, pịa na Imecha bọtịnụ na 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. mepee Mozilla Firefox ngwa si Windows Search mgbochi
2. Pịa na Mepee NchNhr ngwa bọtịnụ ma pịa na Enyemaka nhọrọ na ndepụta egosiri.
3. Ugbu a, pịa na Troubleshoot Mode… na Firefox help window.
4. Pịa na Open bọtịnụ na Malitegharịa ekwentị Firefox na ọnọdụ nsogbu windo mmapụta.
5. Ọzọ, pịa na Mepee NchNhr ngwa bọtịnụ ma pịa na Tinye-ons na gburugburu nhọrọ na ndepụta.
6. Pịa na Extensions tab on the left pane of the next window and toggle anya the add-ons on the window.
7. Mgbe ahụ, pịa na atọ kwụ ọtọ ntụpọ button on the add-on and click on the wepụ button on the list.
8. Pịa na wepụ 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. mepee Mozilla Firefox ngwa.
2. Pịa na Mepee NchNhr ngwa bọtịnụ ma pịa na Ibe edokwubara option in the list displayed.
3. Na Ibe edokwubara menu, pịa na Jikwaa ibe edokọbara option at the bottom of the list.
4. Na Library ihuenyo, pịa na Import and Backup button at the menu bar and click on the Export Bookmarks to HTML… option in the drop-down menu displayed.
5. Na Export Bookmarks File window, browse and select a location, and click on the Save 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. Mwepụta nke Firefox ngwa nchọgharị.
2. Ụdị gbasara: profaịlụ in the URL address bar at the top and press the Tinye isi ihe na-emeghe About Profiles window.
3. Pịa na Mepụta profaịlụ ọhụrụ bọtịnụ na window.
4. Ọzọ, pịa na Osote bọtịnụ na Welcome to the Create Profile Wizard.
5. Type a name for the Profile in the Tinye aha profaịlụ ọhụrụ ubi na pịa na Imecha button in the window to create the Profile.
Cheta na: Pịa na 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. Pịa Igodo Windows, ụdị ogwe njikwa na pịa Open.
2. Click on the option Category na Lee ya drop-down menu and click on the Iwepụ mmemme nhọrọ na Programs n'isi.
3. Họrọ nke Mozilla Firefox (x64 en-US) in the list, click on the Uninstall button at the top of the bar and click on the Ee bọtịnụ na windo UAC.
4. Mgbe ahụ, pịa na Osote bọtịnụ na Mozilla Firefox Uninstall ọkachamara.
5. Ọzọ, pịa na Uninstall button in the next window.
6. Pịa na Imecha button on the last window to completely uninstall the Firefox app.
7. Pịa Windows+ E igodo together to open the File Explorer and navigate to the This PC > Local Disk (C:) > Program Files > Mozilla Firefox folder.
8. Pịa aka nri na Mozilla Firefox folda ma pịa Hichapụ 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. Kpọọ Igodo Windows, ụdị Google chrome na pịa Open.
Cheta na: You can use any web browser to download the Firefox browser on your PC.
2. Mepee ukara website nke Ihe nchọgharị Mozilla Firefox on Google Chrome and click on the Download Firefox bọtịnụ na 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. Mwepụta nke 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. mepee Firefox ngwa.
2. Pịa na Mepee NchNhr ngwa bọtịnụ ma pịa na Settings nhọrọ na ndepụta egosiri.
3. Na General taabụ, pịa na Ntọala… bọtịnụ na Ntọala Ntọala ngalaba.
4. Họrọ nke Manual proxy configuration nhọrọ na Ntọala Njikọ window.
5. Ụdị SOCKS Host: 127.0.0.1 Port: 9050 na Http Proxy ubi, ụdị 8080 na Port field, and click on the OK bọtịnụ.
6. Mgbe ahụ, pịnye Gbasara: hazi on the search bar of the Firefox browser and click on the Nabata Egwu ahụ ma Gaa n'ihu bọtịnụ.
7. Finally, type netwọk.proxy.socks_remote_dns na search mmanya na pịa na gbanwee button to set the type of the entry to be ezi.
8. Ugbu a, pịnye https://check.torptoject.org/ in the search bar on the Firefox browser and press the Tinye key to check the issues with the Tor Browser.
-atụ aro:
Isiokwu ahụ na-atụle ụzọ isi dozie ya 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.