Windows 2019 Change Product Key Not Working

After installing Windows 2019 you may not be able to activate it with the default product key. When you click “change product key” in the activation screen nothing happens.

Solution: change it from the CMD line.

You will get popups each time you run these commands.

  • Open CMD > Shift + Right Click > Run as administrator
  • Remove existing key:
  • slmgr.vbs /upk
  • Clear everything:
  • slmgr.vbs /cpky
  • Enter new key:
  • slmgr.vbs /ipk [your-new-product-key]
  • Activate Windows (you might get an error, but check Server Manager for actual result):
  • slmgr.vbs /ato

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