Microsoft Loopback Adapter Windows 11 Verified Jun 2026

Over the years, it has been renamed to "Microsoft KM-TEST Loopback Adapter," which is the name you will look for during installation on Windows 11. Its primary purpose is not to connect to the internet, but to route network traffic back to the local machine, allowing programs and virtual machines to communicate as if they were on a real network, without any physical hardware.

After installation, you can configure the adapter to meet your testing needs. microsoft loopback adapter windows 11

Microsoft Loopback Adapter (officially renamed to Microsoft KM-TEST Loopback Adapter Over the years, it has been renamed to