The (renamed to Microsoft KM-TEST Loopback Adapter in newer versions of Windows) is a virtual network interface used to simulate a network connection on a single machine. It is primarily used for testing network software, developing applications that require a network interface without having a physical one active, or troubleshooting connectivity issues. How to Install on Windows 11
—is a virtual network interface that mimics a physical network card. It is primarily used for testing network configurations, software development, or connecting virtual machines when no physical network is available. Stack Overflow Installation Guide for Windows 11 You can install the adapter manually using the Add Hardware Wizard Launch the Wizard hdwwiz.exe , and press Start the Setup on the welcome screen. Manual Selection microsoft loopback adapter windows 11
For the loopback adapter to function correctly for testing (so it doesn't rely on DHCP), you should assign it a static IP address. The (renamed to Microsoft KM-TEST Loopback Adapter in