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

firefox is about 80 percent downloaded onto my new iMac computer and will not finish.

  • 2
  • 3
  • Nzaghachi ikpeazụ nke Hasan

more options

I have a new iMac computer and tried to download Firefox. It downloaded about 80 percent and stopped. what should i do?

I have a new iMac computer and tried to download Firefox. It downloaded about 80 percent and stopped. what should i do?

All Replies (2)

more options

Are you updating or downloading the full version?


If there are problems with updating or with the permissions then easiest is to download the full version and trash the currently installed version to do a clean install of the new version.

Download a new copy of the Firefox program and save the disk image (dmg) file to the desktop

  • Trash the current Firefox application to do a clean (re-)install
  • Install the new version that you have downloaded

Your profile data is stored elsewhere in the Firefox Profile Folder, so you won't lose your bookmarks and other personal data.

more options