Microsoft Loopback Adapter Windows 11 [new]

Select Network adapters from the list of device types and click Next . Select Manufacturer and Model: Under Manufacturer, select Microsoft . Under Model, select Microsoft KM-TEST Loopback Adapter . Click Next .

When using tools like Wireshark to analyze internal traffic, regular localhost or 127.0.0.1 traffic is often bypassed. By binding traffic to the Loopback Adapter , you can capture this traffic.

Because it is a virtual device, you cannot install it through traditional "Add Hardware" methods in Settings. You must use the Legacy Hardware wizard.

: Safely test network-dependent software (like web servers or databases) on a local machine without exposing them to a real network. microsoft loopback adapter windows 11

: You can find it in Control Panel > Network and Internet > Network Connections and rename it (e.g., "Loopback") to distinguish it from physical ports.

The Microsoft Loopback Adapter (known in modern Windows versions as the ) is a vital diagnostic tool for developers, network engineers, and IT professionals. It allows a computer to simulate a network environment where it can communicate with itself using standard networking protocols.

Press Win + R , type ncpa.cpl , and hit Enter. Configure Properties: Right-click your new " Microsoft KM-TEST Loopback Adapter Go to product viewer dialog for this item. " and select Properties . Select Network adapters from the list of device

Once installed, the adapter appears as a new "Ethernet" connection in your network settings: Windows 11 Microsoft KM-TEST Loopback Adapter is unstable

Now, let's proceed with the installation.

Optionally, go to > Show hidden devices in Device Manager to ensure no ghost instances remain. Click Next

: Go to Control Panel > Network and Internet > Network Connections .

Click Next through the prompt, and finally, click Finish .