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I still cannot get firefox to boot up after downloading the update. Get message that I must restart the computer. Unable to delete the program so I can download the program again. Same message comes up.

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  • Last reply by cor-el

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firefox message comes up every time I try to get on the interner with firefox. I received an email about two weeks ago from Mozilla advising me to download the updated firefox program. I have not been able to get to firefox since. I have tried to delete mozilla from my computer and get the message that I must reboot the system. I get the same message when I try to get on the internet with firefox. STATEMENT IS "Your computer must be restarted to complete previous upgrade of Firefox."

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Try to run the Firefox program once as Administrator (right-click firefox.exe: Run as Administrator).

If that doesn't solve the problem then remove the Firefox program folder (C:\Program Files\Mozilla Firefox\) to do a clean reinstall.


Download a fresh Firefox copy and save the file to the desktop.

Uninstall your current Firefox version, if possible.

  • Do NOT remove personal data when you uninstall the current version or you lose your bookmarks and other data in the profile folder.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.