If it works there, the adapter isn't faulty. Additionally, to be 100% certain, take the suspect adapter to a different network (or just connect it directly to another computer). If another adapter gives you the same results, it's highly likely the issue isn't the adapter. This is fairly easy to diagnose try another one.

Network security measures preventing you from obtaining network access.

Removing their 'Ethernet' config from the Network settings and then re-addingĭoes anyone have other suggestions? Thanks in advanceĪssuming that there is no firewall running (you can do this by issuing the command sudo pfctl -d at the command line), there are two possibilities that would be causing this:.

If that was already set, try the 'Advanced' button, then 'Renew DHCP Lease'.

On my computer I went to /Library/Preferences/ and ran sudo rm

To reset the firewall, go to the /Macintosh HD/Library/Preferences/ folder and remove the file called ',' and then restart your computer.

I have also tried steps listed as potential solutions in this post: How do I check network traffic on my Mac? I am comfortable using the terminal.

Inspect the network traffic or the router logs to see if and why the Mac DHCP broadcast packet is being ignored.

Is there anywhere else I can check for additional firewalls? Would firewalls somehow impact ethernet and Wi-fi differently?

According to System Preferences/Security & Privacy/Firewall, my firewall is off.

Find and disable whatever firewall is intercepting the DHCP return traffic.

When I replace the IP address with a the Wi-Fi IP address I use to successfully connect to the same network under 'Using DHCP with manual address', the Apple USB Ethernet Adapter icon is green and displays the message 'Apple USB Ethernet Adapter is currently active and has the IP address xx.xx.xx.252.' However there is no actual internet connection (i.e., I cannot visit any website).Īccording to this solution to a similar problem, I can: I can connect to the internet with the same ethernet port on my Windows 10 machine.

'Apple USB Ethernet Adapter has a self-assigned IP address and will.

I am receiving this error under System Preferences/Network: Cannot connect MacBook Pro (Retina, 15-inch, Mid 2015) (10.13.3) to the internet through my Apple USB Ethernet Adapter.

Trendnet usb to ethernet for mac