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How do I uninstall current ver of Firefox and then install ver 5


I currently have Mozilla Fire fox 18.0.1(x86en.us) and Mozilla Maintenance Service 23.0.1 in my Windows-7 x64 computer. I have new software that recommends changing the current fire fox browser to Fir Fox Ver 4 or later and the software will run better. I am thinking of ver 5. However my control panel does not let me uninstall Firefox. They do show ways how is can be done but I am not comfortable even trying them.

Surely you should be able to show me the proper way.

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.8 r800
  • Google Update
  • Citrix Online App Detector Plugin
  • SiteAdvisor
  • 5.1.20513.0
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.03
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • McAfee MSC FF plugin DLL
  • McAfee MSS+ NPAPI Plugin
  • VLC media player Web Plugin 2.0.2
  • ActiveTouch General Plugin Container Version 105
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0

More Information

  • Top 25 Contributor
528 solutions 5041 answers

Um actually they mean Firefox 4 and Up, installing a version as old as 5 puts you at risk for exploits. Firefox 23 should work fine.