Windows Authentication is missing in IIS

Problem

In IIS Manager, Windows Authentication is missing from the list of available authentication methods.

IIS Manager Authentication configuration section - missing Windows Authentication

Solution

1. Open Turn Windows features on or off.

2. Select the Windows Authentication feature and click OK.

Windows Features - Turning on the Windows Authentication feature for IIS

3. Restart your computer.

Once it reboots, you’ll see the Windows Authentication option in IIS.

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