Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Firefix upgrade will not finish. It is proabably due to upgrading in a limited XP account. How do I fix this and upgrade?

Brian Clougherty
Brian Clougherty
more options

I get this Setup message: "Your computer must be restarted to complete a previous upgrade of Firefox. Do you want to reboot now?" anytime I try to start Firefox or if I try to upgrade, uninstall, reinstall or start Firefox in Safe Mode. Reboot does not correct this. It is probably due to upgrading from a limited XP account. I cannot now upgrade or fix this from an administrator account. How do I fix this and upgrade?

I get this Setup message: "Your computer must be restarted to complete a previous upgrade of Firefox. Do you want to reboot now?" anytime I try to start Firefox or if I try to upgrade, uninstall, reinstall or start Firefox in Safe Mode. Reboot does not correct this. It is probably due to upgrading from a limited XP account. I cannot now upgrade or fix this from an administrator account. How do I fix this and upgrade?

All Replies (1)

Michael Verdi
Michael Verdi
more options

Try running Firefox as an admin - https://support.mozilla.com/en-US/kb/Software%20Update%20Failed#w_run-as-administrator

If that doesn't work, try removing and reinstalling Firefox.