Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

I had to upgrade my Firefox for Mac and it took forever, I have an old version and wonder if or how to delete it? When I open Firefox I get a warning saying it may not be safe due to a download from the internet?

  • 1 பதிலளி
  • 1 இந்த பிரச்சனை உள்ளது
  • 3 views
  • Last reply by Swarnava Sengupta

I have Firefox 4.0 for Mac, and it couldn't update. I downloaded 8.? and wonder if I should remove the other 4.0 that is on my desktop? Not sure if I should or how? When I open Firefox it warns me that it could be unsafe as it was downloaded from in the Internet?

I have Firefox 4.0 for Mac, and it couldn't update. I downloaded 8.? and wonder if I should remove the other 4.0 that is on my desktop? Not sure if I should or how? When I open Firefox it warns me that it could be unsafe as it was downloaded from in the Internet?

All Replies (1)

You can get latest version of Firefox from

review mac installing guideline