Step 02 - Type out “firefox.exe -P” and then press OK.Once the problem of Firefox not opening is fixed after creating a new profile, you can simply move the settings from the old one to the new profile. Thus, to see if this is actually the case, you can make a new profile within the Profile Manager. This won’t be fixed by a simple uninstallation and reinstallation of Firefox since the settings won’t be deleted after an uninstallation. How do I fix Firefox not opening? When Firefox worked previously but doesn’t seem to start, there might be corrupt data within your settings. Simply visit the Internet security app’s support site in order to learn how to empty the virtual cache. In order to fix this, you should look out for the virtualization settings of the tool and then clear out its virtual cache. The feature is also available in other types of Internet security tools. Usually, this is present in some ZoneAlarm versions. This is true, especially when the tool has a feature called Virtual Browsing. It typically happens after Firefox is updated. When Firefox still doesn’t open, then you can try the following solutions:Ĭertain software used for Internet security can hinder Firefox from opening. After this, you should try opening the browser again. Usually, when you click the icon for Firefox and no error message or window appears, the first thing you could do is to restart the computer. Part 1: Firefox Not Opening With No Error Message Part 2: Firefox Not Opening With Specific Error Messages Part 3: To Wrap It All up Part 1: Firefox Not Opening With No Error Message This comprehensive guide will teach you how to fix your problem and get yourself ready for another surfing experience with the popular web browser. In this guide, we’ll teach you how to fix the problem when you can’t launch Firefox on your computer. However, there are times when you face the problem of Firefox not opening. People use Firefox in order to surf the web, look for information, stream videos, and more. Firefox is one of the most popular web browsers including Chrome and Safari.

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