Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Been trying to uninstall Firefox 3.6.8 from XP SP3 (3.6.6 seems to be there too), but receiving "Your computer must be restarted to complete a previous upgrade of Firefox. Do you want to reboot now?" message.

Followed the instructions,

but uninstaller is repeating it's mantra "Your computer must be restarted..."

Just want to get rid of FF. Thanks!

share|improve this question
Presumably you've tried rebooting? – DMA57361 Sep 3 '10 at 14:54
up vote 2 down vote accepted

From I keep getting this message “your computer must be restarted to complete a previous uninstall of firefox” ?

rename file C:\Program Files\Mozilla Firefox\firefox.exe.moz-delete to firefox.exe.moz-delete.old and the installer will work, if you rename or remove the complete folder you will also loose all your settings and plugins

I had to rename the file called C:\Program Files\Mozilla Firefox\firefox.exe.moz-upgrade to firefox.exe.moz-upgrade.old for it to work, but it finally worked.

share|improve this answer
Harry you made my day, thanks! – Aki Oct 3 '10 at 9:17
@Aki: If this worked, you should accept the answer. – harrymc Oct 3 '10 at 9:37

Maybe you can try force-uninstalling it with Revo?

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.