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New Firefox 6.0 will not install, says "close Firefox" when not open

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I'm trying to install Firefox 6.0. It will not run and keeps telling me to "close Firefox" even though I do not have it running. Does it see itself running? Is there a glitch?

I'm trying to install Firefox 6.0. It will not run and keeps telling me to "close Firefox" even though I do not have it running. Does it see itself running? Is there a glitch?

Additional System Details

This happened

Every time Firefox opened

This started when...

I tried to upgrade

Installed Plug-ins

  • My Web Search Plugin Stub for 32-bit Windows
  • IE Tab Plug-in for Mozilla/Firefox
  • np-mswmp
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.0
  • 12.0.1.647
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Provides additional functionality on Facebook. See our web site for details.
  • Google Update
  • Shockwave Flash 10.3 r181
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.1.629
  • GEPlugin
  • Next Generation Java Plug-in 10.0.0 for Mozilla browsers
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In

Application

  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0

More Information

Andrew
  • Moderator
321 solutions 4036 answers

Check in your task manager to make sure the process ended. Otherwise were going to make a new profile.

Check in your task manager to make sure the process ended. Otherwise were going to make a new profile.

Question owner

I tried that, it's not running.

I tried that, it's not running.
SafeBrowser 543 solutions 2390 answers

Must be the "hang at exit" problem.

  1. Stop the Firefox process:
  2. Why Firefox may hang:
  3. Use Firefox Safe Mode to find a problem with an Extension or Plugin:


If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.



Not related to your question, but...

You need to update some plug-ins:

Must be the "hang at exit" problem. <br /><br /> #Stop the Firefox process: #*[http://kb.mozillazine.org/Kill_application Mozillazine - Kill application] #*Windows 7 users click [http://www.techrepublic.com/blog/window-on-windows/reap-the-benefits-of-windows-7s-task-manager/2576 here] #Why Firefox may hang: #*[http://support.mozilla.com/en-US/kb/Firefox+hangs Firefox hangs] (see Hang at exit) #*[http://kb.mozillazine.org/Firefox_hangs Firefox hangs (Mozillazine)] (see Hang at exit and Closing Firefox properly) #*[https://support.mozilla.com/en-US/kb/Firefox+is+already+running+but+is+not+responding Firefox is already running but is not responding] #Use Firefox Safe Mode to find a problem with an Extension or Plugin: #*Don't check anything when entering Safe Mode, just continue #*If the problem does not occur in Safe Mode it is probably and Extension or Plugin causing the problem #*See: #**[[Safe Mode]] and [http://kb.mozillazine.org/Safe_Mode Safe Mode (Mozillazine)] #**[http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes Troubleshooting extensions and themes] #**[http://support.mozilla.com/en-US/kb/Troubleshooting+plugins Troubleshooting plugins] #**[http://support.mozilla.com/en-US/kb/Basic+Troubleshooting Basic Troubleshooting] '''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.''' ------------------------- Not related to your question, but... You need to update some plug-ins: *Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/ *Shockwave Flash (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]

Modified by SafeBrowser