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!

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 have just downloaded Firefox 4 and get a message that says "You cannot open the application “Firefox” because it is not supported on this architecture." I'm on a Mac with OS X 10.5.8 and it has a PC G5 chip. Does anyone know what is happening?

more options

Details are in the question.

For extra information, I got the same message when I downloaded the latest update for Skype. I'm wondering whether it's the G5 chip or the Leopard OS - because I can't upgrade to Snow Leopard (10.6) on G5 chip!

Details are in the question. For extra information, I got the same message when I downloaded the latest update for Skype. I'm wondering whether it's the G5 chip or the Leopard OS - because I can't upgrade to Snow Leopard (10.6) on G5 chip!

Isisombulu esikhethiweyo

Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox

If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

Funda le mpendulo kwimeko leyo 👍 2

All Replies (2)

more options

Isisombululo esiKhethiweyo

Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox

If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

more options

It really is getting annoying on problem with skype. Please clear this up so we can download again.