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- Outdated Firefox- The outdated version of the Firefox app may cause this error.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.
ວິທີທີ່ 1: ວິທີການແກ້ໄຂບັນຫາພື້ນຖານ
The first approach to solve the Couldn’t load XPCOM error is to try the basic troubleshooting methods listed in this section.
1. ຣີສະຕາດ 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 ພະລັງງານ button at the bottom-left corner, and click on the ເລີ່ມຕົ້ນໃຫມ່ ທາງເລືອກທີ່ຈະ restart PC ຂອງທ່ານ.
2. ກວດເບິ່ງການເຊື່ອມຕໍ່ອິນເຕີເນັດ
An unstable Internet connection may hinder you from using the Firefox browser. You can check the speed of the connection using the ການທົດສອບຄວາມໄວ 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 ເປີດຕົວ ການຕັ້ງຄ່າ ໂດຍການກົດ ປຸ່ມ Windows + I ຮ່ວມກັນ.
2 ໃຫ້ຄລິກໃສ່ ກິດ ຕັ້ງ.
3 ໃຫ້ຄລິກໃສ່ ແອັບຯມາດຕະຖານ ຢູ່ ໜ້າ ເບື້ອງຊ້າຍ.
4. Scroll down and click on the current ຕົວທ່ອງເວັບຂອງເວັບໄຊຕ໌.
5. Choose from the option as per your preference.
ຍັງອ່ານ: How to Fix Firefox Not Loading Pages
4. ລຶບໄຟລ໌ຊົ່ວຄາວ
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. ອັບເດດ 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. ດຳ ເນີນການແກ້ໄຂບັນຫາ Windows Update
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. ດໍາເນີນການຟື້ນຟູລະບົບ
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.
ຍັງອ່ານ: Fix Your Connection is not Secure Error on 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.
ກົດປຸ່ມ ປຸ່ມ Windows, ປະເພດ firefox ແລະຄລິກໃສ່ ດໍາເນີນການບໍລິຫານ ທາງເລືອກ.
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. ຕີໄດ້ ປຸ່ມ Windows, ປະເພດ Firefox ແລະຄລິກໃສ່ ເປີດ.
2 ໃຫ້ຄລິກໃສ່ Open Application Menu button (indicated by the three horizontal lines) at the top-right corner of the home page and click on the ການຕັ້ງຄ່າ option on the list displayed.
3 ໃນ ໂດຍທົ່ວໄປ ແຖບ, ໃຫ້ຄລິກໃສ່ ກວດສອບການປັບປຸງ ປຸ່ມໃນ ອັບເດດ Firefox ສ່ວນ.
4. ທ່ານຈະເຫັນໄດ້ Firefox ແມ່ນອັບເດດແລ້ວ message on the Firefox Updates section.
ຫມາຍເຫດ: 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. ເປີດຕົວ Firefox app from the Windows Search ບາ.
2. ຕໍ່ໄປ, ໃຫ້ຄລິກໃສ່ Open Application Menu ແລະກົດປຸ່ມ ຊ່ວຍເຫຼືອ option on the list displayed.
3 ໃຫ້ຄລິກໃສ່ Troubleshoot Mode… ໃນ Firefox help window.
4. ໃນປັດຈຸບັນ, ໃຫ້ຄລິກໃສ່ ເລີ່ມຕົ້ນໃຫມ່ ປຸ່ມໃນ ຣີສະຕາດ Firefox ໃນໂໝດແກ້ໄຂບັນຫາ ປ່ອງຢ້ຽມປ໊ອບອັບ.
5 ໃຫ້ຄລິກໃສ່ ລີເຟດ Firefox ປຸ່ມໃນ Open Firefox in Troubleshoot Mode confirmation window.
6. ຫຼັງຈາກນັ້ນ, ໃຫ້ຄລິກໃສ່ ລີເຟດ Firefox ປຸ່ມໃນ Refresh Firefox to its default settings window.
7. ສຸດທ້າຍ, ກົດທີ່ປຸ່ມ ສໍາເລັດຮູບ ປຸ່ມໃນ Import Complete window to Refresh Firefox completely.
ຍັງອ່ານ: Fix Server Not Found Error in 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. ເປີດ Mozilla Firefox app from the Windows Search ບາ.
2 ໃຫ້ຄລິກໃສ່ Open Application Menu ແລະກົດປຸ່ມ ຊ່ວຍເຫຼືອ option on the list displayed.
3. ໃນປັດຈຸບັນ, ໃຫ້ຄລິກໃສ່ Troubleshoot Mode… ໃນ Firefox help window.
4 ໃຫ້ຄລິກໃສ່ ເປີດ ປຸ່ມໃນ ຣີສະຕາດ Firefox ໃນໂໝດແກ້ໄຂບັນຫາ ປ່ອງຢ້ຽມປ໊ອບອັບ.
5. ຕໍ່ໄປ, ໃຫ້ຄລິກໃສ່ Open Application Menu ແລະກົດປຸ່ມ ສ່ວນເສີມ ແລະຮູບແບບສີສັນ option on the list.
6 ໃຫ້ຄລິກໃສ່ ການຂະຫຍາຍ tab on the left pane of the next window and toggle ໄປ the add-ons on the window.
7. ຫຼັງຈາກນັ້ນ, ໃຫ້ຄລິກໃສ່ ສາມຈຸດທາງນອນ button on the add-on and click on the ເອົາ button on the list.
8 ໃຫ້ຄລິກໃສ່ ເອົາ 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. ເປີດ Mozilla Firefox app
2 ໃຫ້ຄລິກໃສ່ Open Application Menu ແລະກົດປຸ່ມ Bookmarks option in the list displayed.
3 ໃນ Bookmarks ເມນູ, ໃຫ້ຄລິກໃສ່ ຈັດການບຸກມາກ option at the bottom of the list.
4 ໃນ ຫ້ອງສະຫມຸດ ໜ້າ ຈໍ, ກົດທີ່ Import and Backup button at the menu bar and click on the Export Bookmarks to HTML… option in the drop-down menu displayed.
5 ໃນ Export Bookmarks File window, browse and select a location, and click on the ບັນທຶກ 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. ເປີດຕົວ Firefox ແອັບ browser.
2 ປະເພດ ກ່ຽວກັບ: ໂປຣໄຟລ in the URL address bar at the top and press the ກະລຸນາໃສ່ ທີ່ສໍາຄັນທີ່ຈະເປີດ About Profiles window.
3 ໃຫ້ຄລິກໃສ່ ສ້າງໂປຣໄຟລ໌ໃໝ່ ປຸ່ມເທິງປ່ອງຢ້ຽມ.
4. ຕໍ່ໄປ, ໃຫ້ຄລິກໃສ່ ຖັດໄປ ປຸ່ມໃນ Welcome to the Create Profile Wizard.
5. Type a name for the Profile in the ໃສ່ຊື່ໂປຼໄຟລ໌ ໃໝ່ ພາກສະຫນາມແລະໃຫ້ຄລິກໃສ່ ສໍາເລັດຮູບ button in the window to create the Profile.
ຫມາຍເຫດ: ໃຫ້ຄລິກໃສ່ Choose Folder… button to change the location for storing the User Profile name instead of the default location.
ຍັງອ່ານ: ແກ້ໄຂ Firefox ເຮັດວຽກຢູ່ແລ້ວ
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.
ກົດປຸ່ມ ປຸ່ມ Windows, ປະເພດ ແຜງຄວບຄຸມ ແລະຄລິກໃສ່ ເປີດ.
2. Click on the option ປະເພດ ໃນ ເບິ່ງໂດຍ drop-down menu and click on the ຖອນການຕິດຕັ້ງໂປລແກລມ ທາງເລືອກໃນການ ໂຄງການ ຫົວຂໍ້.
3 ເລືອກເອົາ Mozilla Firefox (x64 en-US) in the list, click on the ຖອນການຕິດຕັ້ງ button at the top of the bar and click on the ແມ່ນແລ້ວ button on the UAC window.
4. ຫຼັງຈາກນັ້ນ, ໃຫ້ຄລິກໃສ່ ຖັດໄປ ປຸ່ມໃນ Mozilla Firefox Uninstall wizard
5. ຕໍ່ໄປ, ໃຫ້ຄລິກໃສ່ ຖອນການຕິດຕັ້ງ button in the next window.
6 ໃຫ້ຄລິກໃສ່ ສໍາເລັດຮູບ button on the last window to completely uninstall the Firefox app.
ກົດປຸ່ມ Windows+ E ໃຊ້ together to open the File Explorer and navigate to the This PC > Local Disk (C:) > Program Files > Mozilla Firefox ໂຟນເດີ.
8. ກົດຂວາໃສ່ປຸ່ມ Mozilla Firefox ໂຟນເດີແລະໃຫ້ຄລິກໃສ່ ລົບ 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. ຕີໄດ້ ປຸ່ມ Windows, ປະເພດ google chrome ແລະຄລິກໃສ່ ເປີດ.
ຫມາຍເຫດ: You can use any web browser to download the Firefox browser on your PC.
2. ເປີດເວັບໄຊທ໌ທາງການຂອງ ຕົວທ່ອງເວັບ Mozilla Firefox on Google Chrome and click on the ດາວໂຫລດ Firefox ປຸ່ມເທິງປ່ອງຢ້ຽມ.
3. Double-click on the downloaded executable file Firefox Installer.exe to run the installation file.
4. ລໍຖ້າຂະບວນການຕິດຕັ້ງສໍາເລັດ.
5. ເປີດຕົວ Firefox Web Browser app on your PC.
ຍັງອ່ານ: Fix No Sound in Firefox on 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. ເປີດ Firefox app
2 ໃຫ້ຄລິກໃສ່ Open Application Menu ແລະກົດປຸ່ມ ການຕັ້ງຄ່າ option on the list displayed.
3 ໃນ ໂດຍທົ່ວໄປ ແຖບ, ໃຫ້ຄລິກໃສ່ ການຕັ້ງຄ່າ ... ປຸ່ມໃນ ການຕັ້ງຄ່າເຄືອຂ່າຍ ສ່ວນ.
4 ເລືອກເອົາ Manual proxy configuration ທາງເລືອກໃນການ ການຕັ້ງຄ່າການເຊື່ອມຕໍ່ window.
5 ປະເພດ SOCKS Host: 127.0.0.1 Port: 9050 ໃນ ຕົວແທນ HTTP ພາກສະຫນາມ, ປະເພດ 8080 ໃນ Port field, and click on the OK ປຸ່ມ.
6. ຫຼັງຈາກນັ້ນ, ພິມ ກ່ຽວກັບ: config on the search bar of the Firefox browser and click on the ຍອມຮັບຄວາມສ່ຽງແລະສືບຕໍ່ ປຸ່ມ.
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 ທີ່ແທ້ຈິງ.
8. ໃນປັດຈຸບັນ, ພິມ https://check.torptoject.org/ in the search bar on the Firefox browser and press the ກະລຸນາໃສ່ key to check the issues with the Tor Browser.
ແນະນໍາໃຫ້:
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.