Click the Start menu.
Search for “cmd".
Right-click on “cmd” and select “Run as Administrator”
Enter “hdwwiz.exe”
In the "Welcome to the Add Hardware Wizard", click Next.
Select "Install the hardware that I manually select from a list (Advanced)" and click Next.
Scroll down and select "Network adapters" and click Next.
Select under Manufacturer "Microsoft" and then under Network Adapter "Microsoft Loopback Adapter" and click Next.
done