How to activate a Windows 11 key?

2 min. readlast update: 04.22.2026

Redeeming a Windows 11 key is really simple, just follow these steps:

Download the Windows 11 installer here.

See our Video Activation Guide below.



1. Get Installation ID

  • Press Win + R, type SLUI 4, and press Enter
  • Select your country/region

Write down the Installation ID.

2. Open Microsoft Activation Portal

3. Generate Confirmation ID

  • Enter the Installation ID on the portal
  • Copy the Confirmation ID provided

4. Complete Activation

  • Return to the original PC
  • Enter the Confirmation ID to finish activation.

OPTION 2

If you will encounter any issues during the Windows 10 activation, please refer to the official Microsoft’s troubleshooting website.

  1. Visit the official Microsoft website and download the official Windows 11 installer. 
  2. Click the download button below “Windows 11 Installation Assistant” to download it. 
  3. When you are performing an installation of Windows 11 on your PC, you will be prompted to enter your activation code

Are you getting error code 0xC004C008 during activation? Check out our guide on how to resolve it! LINK 

If you will encounter any issues during the Windows 11 activation, please refer to the official Microsoft’s troubleshooting website.

The key is not working

If you have activated the key according to the guide but the code appears not to work, please check what type of error message you receive and depending on it follow the appropriate instructions:

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