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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

FF 4.0 "Cannot open...Not supported by this architecture."

  • 1 valiny
  • 19 manana an'ity olana ity
  • 14 views
  • Valiny farany nomen'i the-edmeister

more options

I downloaded FF 4.0 to my iMac G5, running OS X , 10.5.8, put it in my application folder, and then dragged it to the dock.

The logo had a "forbidden" sign superimposed, and when I tried to open FF, received the message: "Cannot be opened...not supported by this architecture."

I downloaded FF 4.0 to my iMac G5, running OS X , 10.5.8, put it in my application folder, and then dragged it to the dock. The logo had a "forbidden" sign superimposed, and when I tried to open FF, received the message: "Cannot be opened...not supported by this architecture."

All Replies (1)

more options

Firefox 4.0 doesn't work with PPC Mac's.

For older Macs that aren't supported in Firefox 4.0, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/