After purchasing a new iMac a few months back and having no problems whatsoever, I just started getting this error two nights ago and have not been able to resolve it.
I have my iMac connecting wirelessly to a LinkSys WRT54G router with DD-WRT installed. My wireless network has a WPA-PSK password and restricts access based on MAC addresses.
One of four things happen when I try to get AirPort to connect:
1) It gets the correct IP address, but the internet still does not work. (this is rare)
2) It gets a self-assigned IP address (169.xxx, you know the story)
3) I get prompted for the network password and it then tells me "Invalid password" (and yes, I am putting in the correct password)
4) I get prompted for the network password and it then tells me "Connection timed out".
Again, I changed nothing; this just started occurring out of the blue. I've tried a bajillion things:
- Restarting modem, router, computer, powercycling, etc.
- Removing all security measures from wireless network (password, MAC filtering, etc.)
- Manually specifying IP address
- Deleting files in /Library/Preference/SystemConfiguration
I should note that all of the other (windows) machines in my house still connect and work fine. Also, AirPort still seems to be scanning properly because it recognizes all of the nearby networks.
I'm totally bummed out about this, so if anyone has suggestions outside of what I've already tried, I'd love to hear them.
Thanks,
Aaron