Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Solved Arkivert

I followed all the steps to install on my Mac (os x version) when I try to open it, I get, I get a popup "You cannot use the application "firefox" with this version of Mac OS X."

jscher2000 -... replied
Lfisher

I followed all the steps to install firefox on my Mac (OS X). After installing, I try to click on the Firefox icon and I recieve a popup that says "You cannot use the application "firefox" with this version of Mac OS X. I restarted the computer, tried again, same popup. Then uninstalled and reinstalled and same result. What did I do wrong?

I followed all the steps to install firefox on my Mac (OS X). After installing, I try to click on the Firefox icon and I recieve a popup that says "You cannot use the application "firefox" with this version of Mac OS X. I restarted the computer, tried again, same popup. Then uninstalled and reinstalled and same result. What did I do wrong?

All Replies (1)

Valgt løsning

Unfortunately, Firefox 4 requires either MacOS X 10.5 or 10.6. For 10.4, you can run Firefox 3.6 from here:

http://www.mozilla.com/firefox/all-older