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All current versions of Firefox will not run unless I open it as an administrator.

  • 2 cavab
  • 7 have this problem
  • 1 view
  • Last reply by Nathaniel

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I've tried unistalling and reinstalling FF 4 and 5 Beta and get the same results. only when I go to my programs file and select "run as admin..." can I run FF. That also limits my mouse's functionality in FF. Using any kind of shotrcuts on the desktop or Start menu will not work to run program.

I've tried unistalling and reinstalling FF 4 and 5 Beta and get the same results. only when I go to my programs file and select "run as admin..." can I run FF. That also limits my mouse's functionality in FF. Using any kind of shotrcuts on the desktop or Start menu will not work to run program.

All Replies (2)

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Check that you do not run Firefox as Administrator.

Right-click the Firefox desktop shortcut and choose "Properties".
Make sure that all items are deselected in the "Compatibility" tab of the Properties window.

  • Privilege Level: "Run this program as Administrator" should not be selected
  • "Run this program in compatibility mode for:" should not be selected

Also check the Properties of the firefox.exe program in the Firefox program directory.


A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.

See:

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Thanks! Will do as prescribed.