This tutorial to show methods to change Windows Product Key and Windows Activation
GUI Mode
1. Open Run Dialog and enter slui 3
2. Enter New Windows Key in Product Key textbox
Windows Server 2008/2008 R2
Windows Server 2012
Windows Server 2012 R2
3. Click on Next or Activate button to activate Windows License
Command Line Mode
1. Open Command Prompt in Administrator Mode
2. Execute command:
slmgr.vbs /ipk <PRODUCT_KEY>
3. Please wait until Windows Script Host dialog appear to show the result.
4. To activate windows, execute command
slmgr.vbs /ato