How to fix Mozilla Firefox Couldn’t load XPCOM Error?

Mozilla Firefox is one of the popular browsers since Google Chrome, this is a favorite browser for web developers because there are many extensions for its development, Mozilla releases its updates to Firefox because it gets new features, sometimes -Never it becomes inconsistent for windows due to new features or due to other installed programs Sometimes this works strange and gives you errors, ” Mozilla Firefox Couldn’t load XPCOM Error ” when launching Firefox on one of these Windows computers, if you scan it by virus, delete junk files and reboot system several times Try

There are two Ways to Fix Couldn’t Load XPCOM error.

1. Close XP XPCOM error the error message, open another browser like Internet Explorer or Google Chrome Download the latest version of Mozilla Firefox and upgrade to the new version.

2. Complete uninstall and restore Firefox:

Uninstalling completely means that you need to remove all things related to Firefox from your computer such as:

• Uninstall Firefox
• Remove Registry Entries
• Remove from program files
• Delete entries from the app data folder
• Delete from program data folder

All the above functions are exhausting, especially removing entries from the registry because I do not recommend playing with Registry Editor, deleting incorrect registry keys may cause other errors or complete system failure.

Download and install Iobit Uninstaller and uninstall Firefox through Uninstaller, also powerful scan that finds all the registry entries of Firefox and the remaining items, select all the remaining items and delete them.

• After uninstalling Firefox by Iobit Uninstaller, you need to delete another folder from AppData.

• Press Win + R button Run this Run dialog box, type% appdata% in it and enter the entry.

• 

• It will open Roaming folder find and delete Mozilla folder.

Firefox is now completely removed from your computer, now Download Latest version of Firefox using another browser and install it, you would be able to open and browse the internet in Firefox without any error.

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