Apple Accidentally Blacklisted Your Network Cable Port, Follow These Steps to Fix it

In latest software updates, Apple accidentally blacklisted some network cable port on old Mac machines. If you are not using WiFi, and you are unable to connect to the Internet although your phone can access the external website through your home network, you can fix it through the following steps.

macbookpro ports

Scenario 1: Network port unable to connect but WiFi is okay

  1. Hold the Option key and click the Apple menu

  2. Open System Information and a new pop-up window will appear

  3. Find the Software section and select Installations

  4. Find rows labeled ‘Incompatible Kernel Extension Configuration Data’ and its recent version

  5. You need to update the profile if the number is 3.28.1

  6. Open Mac Terminal program by typing Terminal at Spotlight (Search function at the top right corner of your Mac which looks like a magnifier glass)
  7. A new Terminal (like a command line program) will appear
  8. Type sudo softwareupdate –background
  9. It will ask admin password. Usually, it is your password to enter your Mac
  10. When completed, quit the Terminal and reboot your Mac. Your network port should work.

Scenario 2: You are totally offline

  1. Restart your Mac and hold the Command and R key while your Mac is booting
  2. A Mac OSX Utilities will appear
  3. Select Disk Utility and check your main drive name. For this example, the drive name is Macintosh HD
  4. Go to Utilities and find Terminal
  5. You need to remove required file manually by typing this in the Terminal rm -rf “/Volumes/Macintosh HD/System/Library/Extensions/AppleKextExcludeList.kext”
  6. Once completed, restart your Mac. Your network should work, but you still need to update your Mac
  7. Open Mac Terminal program by typing Terminal at Spotlight (Search function in the top right corner of your Mac which looks like a magnifier glass)
  8. A new Terminal (like a command line program) will appear
  9. Type sudo softwareupdate –background
  10. It will ask admin password. Usually, it is your password to enter your Mac

(via Apple)

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