If you're running Mac 10.6 or 10.7, this post will help you with Mac wireless troubleshooting.

Note: the hardware in Mac OS X 10.6 (Snow Leopard) is called ‘Airport’. The hardware in Mac OS X 10.7 (Lion) is called ‘Wifi’.

Here are some common techniques to troubleshoot Mac wireless problems:

Remove an Old Profile (OS X 7 Lion)

  • Open System Preferences (Command + Spacebar > Type in System Preferences > Press Enter)
  • Click on Profiles
  • Select the profile you want to remove and click the minus button

Remove Duplicate Entries (OS X 6 Snow Leopard)

  • Open Network Preferences > Airport > Advanced
  • On the first tab, remove all duplicate entries for your wireless entry
  • Click on 802.1x tab
  • Remove any duplicate entries

Renew IP Address

  • Open Network Preferences > Airport > Advanced
  • Go to TCP/IP tab
  • Click DHCP Release
  • Click OK
  • Click Apply

Further Mac Wireless Troubleshooting

If you need to reset the network adapter settings, see the linked post.

If none of the above helps, you should take a look at your wireless router and make sure the signal is appropriately broadcasting or check the status of the Internet.

If none of these work you can head over to Apple's support page on How to troubleshoot Wifi connectivity. They have a few other things to try.

That's it for this post on Mac wireless troubleshooting. Let me know what tips got you up and running.

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