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.

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

Mulongo oyo etiyamaki na archive. Tuna motuna mosusu soki osengeli na lisalisi

Firefox crashed. tried to delete old to install new. won't delete. tried to replace old with new, but tells me i need to close it first but it's not open

jposes
jposes
more options

Fire fox crashed. I deleted it and installed new version, it worked fine. Got an email with possible virus, so system restored to an earlier date. When I did this, it brought back the old firefox. I tried to delete it, but it won't delete. When I tried to download new version to replace old version, it says I have to close firefox first, but it's not open. What do I do now?

Fire fox crashed. I deleted it and installed new version, it worked fine. Got an email with possible virus, so system restored to an earlier date. When I did this, it brought back the old firefox. I tried to delete it, but it won't delete. When I tried to download new version to replace old version, it says I have to close firefox first, but it's not open. What do I do now?

All Replies (1)

Francisco MJ
Francisco MJ
more options

Hi jposes

Before installing the new firefox go to Windows Task Manager (Ctrl+Alt+Supr), go to the Processes tab and search for any "firefox.exe" (or firefox.exe*32), give a right click and select "End Process Tree". This should be enough to let you install the new FireFox.

Take care and hope this had been useful to you.