If you've ever seen the exclamation mark on your wireless signal icon on the Mac side of your laptop, you know that means your internet is not working. There are many different reasons why this might happen, including an expired password, a clock setting, and many other more complicated issues. However, 8 times out of 10, your problem can be solved by going through each of the following steps:
- Click on the wifi icon in the Menu Bar and select, Open Network Preferences.
- Click the button to turn your Airport off.
- Click the Advanced button and select the 802.1x tab.
- Select the HCPSS-Wireless User Profile on the left, then re-type in your password on the right. If there are multiple user profiles that are the same, delete the extras using the "minus" button below the profiles window.
- Click Apply, then turn Airport back on.
- If needed, enter password again (doesn't always pop up).
If this doesn't work for you, you may need additional assistance from a technician. However, hopefully this will helps some people avoid a trip to my office. NOTE: The above procedure does not work for Mac OS 10.9 (Mavericks) or newer.