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Installing the Microsoft Loopback Adapter in Windows

  • Article
  • 01/15/2025

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

Original KB number:   2777200

Symptoms

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

Cause

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

Resolution

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 TSS for deployment-related issues.