We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

when i try to install firefox again it says the computer must be restarted to finish uninstalling previous version, but when rebooted and tried again it says the same thing, What do I do?

more options

when i try to install firefox again it says the computer must be restarted to finish uninstalling previous version, but when rebooted and tried again it says the same thing, What do I do?

when i try to install firefox again it says the computer must be restarted to finish uninstalling previous version, but when rebooted and tried again it says the same thing, What do I do?

Chosen solution

Please try this: Copy the files formhistory.sqlite (or formhistory) and places.sqlite (or places) if they exist and delete the entire Mozilla folder in %APPDATA% and also the Firefox folder in Program Files. Please see this.

Read this answer in context 👍 0

All Replies (2)

more options

Chosen Solution

Please try this: Copy the files formhistory.sqlite (or formhistory) and places.sqlite (or places) if they exist and delete the entire Mozilla folder in %APPDATA% and also the Firefox folder in Program Files. Please see this.

more options

Thank you very much!!