I've been having a frustrating issue with my Ethernet connection on Windows 11. A few days ago, I noticed my download speeds were extremely slow, and now it says my Ethernet is connected but has 'no internet' and 'no DHCP server was found.' This problem coincided with when I installed Proton VPN, but I uninstalled it, and the issue persists. I've tried several troubleshooting methods: resetting network settings multiple times, reinstalling Ethernet drivers, rebooting both my router and computer, checking the cable connections, and running various CMD tasks to reset the network. I'm not very tech-savvy, so any help to get my Ethernet working again would be greatly appreciated!
6 Answers
Also, check the Device Manager. Try removing your network adapter and restarting your computer. When it boots back up, it should reinstall everything fresh and might solve the problem.
You might want to give the netcfg /d command a shot. It completely resets your network stack, which can fix persistent issues like yours.
Since you're seeing a 'no DHCP server' message, it's likely your PC isn’t communicating with the router. Do you have another laptop? Try connecting it with the same Ethernet cable to see if that works. If it does, then we know it's just your PC that's having issues.
This is a great suggestion! Identifying if it's a device issue will save you a lot of time.
It sounds like a tough situation! First off, you should definitely check the cable by trying it on another device or swapping it with a different one to rule out any cable issues. Sometimes, the connection can seem fine, but the cable can be faulty.
Good point! I had a similar issue where a cable looked okay but actually wasn't working. Testing on another device is a solid move.
Have you tried doing a clean boot using msconfig? This can help eliminate any potential software conflicts that might have been left over from the VPN installation. Just make sure to disable any unnecessary startup programs.
Yes! After I did a clean boot, my issues cleared up as some startup apps were interfering with the network.
Oh, and make sure you've checked your Windows Firewall settings. If there are any leftover rules from the VPN installation, they might be blocking your connection.

That's a good tip! I used that command and it worked wonders for me before.