Windows 11 | Microsoft Loopback Adapter

The Microsoft Loopback Adapter: A Virtual Network Interface for Windows 11

Method 2: Using PowerShell (Alternative)

# Run PowerShell as Admin
pnputil /add-device "C:\Windows\Inf\Netloop.inf"

Access Legacy Hardware: Select your computer name at the top of the list, click the Action menu, and select Add legacy hardware. Start the Wizard: Click Next on the welcome screen. microsoft loopback adapter windows 11

B. PowerShell (DevCon or PNPUTIL alternative) The Microsoft Loopback Adapter: A Virtual Network Interface

• There’s no single built-in PowerShell cmdlet that adds the legacy KM-TEST driver by name; common approaches:

  5. Common use cases and patterns

  • Local service binding: Run a server bound to a loopback adapter IP to avoid external exposure.
  • Testing multi-homed applications: Simulate multiple network interfaces with distinct IPs and routing.
  • Routing/firewall policy testing: Create routes and firewall rules that target the virtual adapter.
  • Legacy licensing or apps that expect a “network card” presence for activation.
  • Network stack debugging: packet capture on the virtual adapter via Wireshark (choose the virtual NIC).
  • Integration with VMs: Use internal Hyper-V switches to connect host and guests without external network access.

  Launch the Wizard: Press Win + R, type hdwwiz.exe, and press Enter. Access Legacy Hardware: Select your computer name at

  Step 4: Select Network Adapter

  1. Scroll down the list of hardware types and select Network adapters.
  2. Click Next.