This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Why can't I uninstall Firefox 51.0?

more options

Attempted to uninstall Firefox with the windows control panel but it doesn't work. Why?

Attempted to uninstall Firefox with the windows control panel but it doesn't work. Why?

All Replies (1)

more options

Try uninstalling Firefox immediately after restarting Windows. The Firefox.exe process might be "hung"; the restart would kill the hung process.