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No Internet connection on Mac or VM after Ethernet cable plugged into MacBook Air

  • Parallels Desktop 10 for Mac
  • Parallels Desktop 8 for Mac


After switching to Ethernet Network connection on MacBook Air using Apple USB Ethernet Adapter, Network connection stops working both on the Mac side and inside the Virtual Machine.


The MacBook Air Ethernet dongle is a USB device and it can be accidentally connected to the Virtual Machine. If your Virtual Machine has Shared Network mode set in Configuration (by default) Network connection would be lost both on the Mac side an inside the Virtual Machine.


In order to get Network connection working on both sides and prevent this issue to occur in future, please follow the steps below:

  1. Go to Parallels Desktop menu -> Preferences

  2. Open USB tab and highlight Apple USB Ethernet Adapter in the list of devices.

  3. Select Connect it to my Mac option and close Preferences tab.

  4. Restart the Virtual Machine.

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