How to Manually Activate Windows 11 Against a KMS Server

Summary

Cyril from TheITBros demonstrates how to manually activate a Windows 11 Pro client against an organization’s KMS server using the built-in slmgr tool, without third-party software. This process is intended for devices covered by volume licensing and connected to the corporate network.

Tutorial Steps

1. Open an elevated PowerShell console and check the current licensing status:

powershell slmgr.vbs /dlv

1. Find the Generic Volume License Key (GVLK) for the Windows edition on Microsoft’s published list, then install it on the client:

powershell slmgr.vbs /ipk <GVLK>

1. Check whether the KMS host is discoverable through DNS. If no KMS SRV record is available, specify the server manually:

powershell slmgr.vbs /skms <KMS-server-name-or-IP>:1688

1. Confirm that the client can reach the KMS host on the default port, 1688.

2. Start activation:

powershell slmgr.vbs /ato

1. Use slmgr licensing commands to review activation details, including the KMS server and activation expiration date.

The video’s example successfully activates a Windows 11 machine through the organization’s KMS service. Its main takeaway is to connect to the corporate network, install the correct GVLK, and configure the client to use the KMS host.

Main speaker/source: Cyril, TheITBros. The tutorial also refers viewers to Microsoft’s GVLK list and TheITBros’ accompanying written guide.