1. Open Firefox
2. Go to FIrefox button > Help > About
3. A window should now pop up.
4. Hit "Check For Updates".

Thanks for trying to help, but, when I try to OPEN Firefox on my desktop, the icon spins like it's searching ,but ,then it stops and the program will NOT OPEN...I will try to Uninstall again and then Reinstall.

reinstall from getfirefox.com

I just tried again and I keep getting the message that Firefox is OPEN and needs to be closed before I can Uninstall.....I cannot see where it is OPEN ..I deleted it from my AllPrograms list and I have tried several times to Uninstall from Programs & Features in my Control Panel....WTF  ??

Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

• Microsoft Safety Scanner
• MalwareBytes' Anti-Malware
• TDSSKiller - AntiRootkit Utility
• Hitman Pro
• ESET Online Scanner

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back to us!

The error message as reported does not make sense. You need to use a browser to download something. Complaining that the browser is open when you are trying to download is nonsense. If you cannot get a workable installer downloaded, maybe try this Mozilla page:

• http://www.mozilla.com/en-US/firefox/all.html

If it is actually not possible to download Firefox from there, you could try using a download application such as Star Downloader.

Download and save the Firefox installer to the desktop and start the installation with a double-click on the desktop icon.

You can find the latest Firefox 22.0 release in all languages and for all Operating Systems here:

• http://www.mozilla.org/en-US/firefox/all.html