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For the damaged files, the common solution is to utilize a faulty-free copy to replace them. You may be also interested in this: Windows 10 Notifications Tell Firefox Users to Use Edge Solution 1: Reinstall FirefoxĪs corrupted/damaged files are mainly responsible for Firefox won’t open Windows 10 error, you should consider reinstalling Firefox.
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In this case, you can remove add-ons to fix the issue. However, these add-ons may result in Firefox to misbehave as well especially when they aren’t coded well and have bugs within them.
#Why does firefox open 4 processes install
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Possible Causes of Firefox Won’t Open Error