Installing the Microsoft Loopback Adapter in Windows

This article helps fix an issue where you can't find the Microsoft Loopback Adapter.

Applies to:   Windows 10 – all editions, Windows Server 2012 R2
Original KB number:   2777200


You're trying to install the Microsoft Loopback Adapter, but are unable to find it.


The Microsoft Loopback Adapter was renamed in Windows 8 and Windows Server 2012. The new name is "Microsoft KM-TEST Loopback Adapter".


When using the Add Hardware Wizard to manually add a network adapter, choose Manufacturer "Microsoft" and choose network adapter "Microsoft KM-TEST Loopback Adapter".

Data collection

If you need assistance from Microsoft support, we recommend you collect the information by following the steps mentioned in Gather information by using TSSv2 for deployment-related issues.