Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've got an iMac running OS X 10.8.3. I connect to the internet via ethernet and have ICS setup to share the ethernet connection over wi-fi.

I then have a Windows XP Dell laptop that connects to the iMac's Wi-Fi. This works fine, the Dell laptop can access the internet.

My problem is that I want to use Microsoft's Remote Desktop on the iMac and use that to connect to the Dell.

This used to work fine but for some reason it doesn't anymore.

The iMac's ethernet connection uses and as the router.

The Wi-fi on the iMac has a "self-assigned IP" of (but I can't see how this is used anywhere). I can't connect to any Wi-fi networks as the ICS is enabled.

On the windows laptop, the IP it gets assigned is and the router (which must be the iMac is

For the remote desktop connection I would always use and it would work.

Now it doesn't, says "The Mac cannot connect to the Windows-based computer".

From the iMac I cannot even ping - "request timeout".

The Windows firewall is off on the Windows laptop.

Any ideas?


share|improve this question
To recover your account, sign up using the same email address you used to post the question. If that doesn't work, request merging your accounts here. – Dennis Apr 3 '13 at 14:45

The Wi-fi on the iMac has a "self-assigned IP" of


On the windows laptop, the IP it gets assigned is and the router (which must be the iMac is

However, the iMac's Wireless IP isn't that at all. You have observed that it is instead This is (at least) one of the reasons why it isn't working.

Manually set the iMac's Wireless IP address to, with a subnet of It should work. Or, you'll be one step closer. The real reason why it stopped working is the same reason the iMac's WiFi changed its IP address.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.