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Unable to Install Firefox 5, Firefox 4 won't boot. FF5 says I must close 4 before installing but 4 is not open. I am in a loop. So now I can't use any Firefox What to do?

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Unable to Install Firefox 5, Firefox 4 won't boot. FF5 says I must close 4 before installing but 4 is not open. I am in a loop. So now I can't use any Firefox What to do?

I got a message under my original Firefox telling me to update. I followed instructions and downloaded new files for Firefox 5. Download was successful. When I followed Wizard to set up, I am told to close Firefox 4 which stopped working. When I click on old icon nothing happens so I am stuck using Internet explorer which I hate. I have tried multiple times to install 5 and always end up in the close old version of firefox before you install 5 loop. Running Windows 7 Home edition

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New Contributor

Re: Unable to Install Firefox 5, Firefox 4 won't boot. FF5 says I must close 4 before installing but 4 is not open. I am in a loop. So now I can't use any Firefox What to do?

My situation is a similar 4 - 5.0.1 upgrade in my laptop XP home SP3. But the day started out with my FF link not working because the program (and most of its components) had vanished from Program Files\Mozilla Firefox. Maybe as a by-product of the previous session having ended with a forced low-battery shutdown? Then I installed FF4.0 (that was the latest setup I had, although I thought I had been on 5) and it immediately advised the upgrade. (My tabs and add-ons appeared normal.) When the upgrade finished it required a reboot to finish the upgrade. And that began the loop of requiring the reboot to finish the prior upgrade.

I tried removing FF with XP's Add/Remove Programs but that also prompts for the pending reboot instead of starting the removal.

New Contributor

Re: Unable to Install Firefox 5, Firefox 4 won't boot. FF5 says I must close 4 before installing but 4 is not open. I am in a loop. So now I can't use any Firefox What to do?

I hated IE so I tried Chrome and love it. I don't have the time to troubleshoot FF5.