Troubleshooting VirtualBox High Sierra No Internet Connection

Troubleshooting VirtualBox High Sierra No Internet Connection

This article will guide you through the process of troubleshooting a High Sierra virtual machine in VirtualBox when it has no internet connection.

Verifying the Host Machine's Internet Connection

Before diving into the virtual machine, it is essential to ensure that the host machine has an active internet connection. You can check this by visiting a website using a web browser or by running the following command:

Checking VirtualBox Host-Only Network Adapter Settings

VirtualBox includes a VirtualBox Host-Only Network adapter. By default, this adapter is not enabled. To enable it, perform the following steps:

1. Navigate to File > Host Network Manager.
2. Click the "Create" button to create a new host-only network.
3. Click the "Settings" button next to the newly created network.
4. Navigate to the "Adapter" tab.
5. Ensure the "Enable" checkbox is checked.
6. Click "OK" to apply the changes and close the dialog.

Checking the Virtual Machine Network Adapter Settings

After confirming the VirtualBox Host-Only Network adapter settings, it's time to check your virtual machine's network adapter settings. Follow these steps:

1. Select the virtual machine from the VirtualBox Manager.
2. Click the "Settings" button.
3. Navigate to the "Network" settings.
4. Ensure that the "Attached to" drop-down is set to "NAT" or "Bridged Adapter" (depending on your network setup).
5. If "NAT" is selected, ensure that the "Enable Network Adapter" checkbox is checked.
6. Click "OK" to apply the changes and close the dialog.

Confirming the High Sierra Guest's Internet Connection

After configuring the network adapters, start your virtual machine and check if the guest can access the internet using a web browser or by running the following command:

Additional Troubleshooting Steps

If the High Sierra guest still cannot access the internet, perform the following additional troubleshooting steps:

1. Disable and re-enable the network adapter in the guest operating system.
2. Restart the VirtualBox Host-Only Network adapter on the host machine.
3. Restart the guest operating system.

• Confirm that the host machine has an active internet connection.
• Verify the VirtualBox Host-Only Network adapter settings.
• Check the Virtual Machine Network Adapter Settings.
• Confirm the High Sierra Guest's Internet Connection.
• Perform additional troubleshooting steps if the guest still cannot access the internet.

References

• VirtualBox NAT Networking
• VirtualBox Bridged Networking
• VirtualBox Host-Only Networking