A few hours ago I upgraded my Dell Optiplex 3020 from Windows 8.1 to Windows 10 via the updater. Since then I have no network connection. I did the same update on a similar machine and the Internet works fine. The troubleshooter won't identify the problem. The network adapter is visible in Device Manager and the driver is fine but in the network settings it is absent.
I ran netsh int ipv4 reset from Command Prompt but it gave me the error:
Resetting failed , access is denied.
I read that I should find some keys in Regedit and give everyone full control over them, but this did not work.
How can I get my networking to work again?
Best Answer
I had the same problem, do you have VPN software installed? I had an old Cisco VPN installation and I couldn't remove it under windows 10. To fix I had to revert the upgrade and uninstall the VPN then upgrade again. My revert only took a couple minutes, it's usually very fast.
Open start menu and search for "windows 8" you will see a settings option to "Go back to Windows 8.1"
Uninstall VPN
Upgrade again