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Solving Mac OS Networking Issues

Sometimes (I’m not sure under which circumstances) it happens that networkng in Mac OS gets broken. In this case you might not be able to establish a connection at all although you entered the IPs and everything. The easiest way to fix this is to delete the entire networking configuration. Note: Everything network-related will be gone then, so make sure that you note down everything you need before proceeding.

Step 1 – Delete the configuration file

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cd /Library/Preferences/SystemConfiguration
sudo rm preferences.plist

You can rename and keep the file instead if you want to be safe.

Step 2 – Create a new networking profile

If you go to [System Preferences] –> [Network]  you’ll notice that the window is empty.mac network preferences 01Click on [Location] –> [Edit Locations…]  to create a new profile. The default name should be “Automatic” if I’m not mistaken but the name doesn’t really matter. Within the new profile the default interfaces will be added automatically. If you need something else, you can add it by clicking the + button in the bottom left corner.mac network preferences 02

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