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.
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?