The Microsoft Loopback adapter is a testing tool for a
virtual network environment where network access is not available. You can bind
network clients, protocols, and other
network configuration
items to the Loopback adapter, and you can install the network adapter
driver or network adapter later while retaining the network
configuration information.
To installa Microsoft Loopback adapter in WIndows 7
1. Click
Start – Search for cmd, right-click cmd and select
“Run as Administrator”
2. From the
command prompt, run “
hdwwiz.exe“. This should launch the “
Add Hardware Wizard“. Click Next.

4. Now from the list select
Network Adapters and click Next.

5. Under Manufacturers, select
Microsoft and select “
Microsoft Loopback Adapter” under Network Adapter and click Next. This should start the installation. Click Finish when the installation completes.

To confirm the loopback adapter installed, right-click Computer,
select properties. Click Device Manager and expand Network Adapters and
you can see the Loopback adapter installed there.
