1. Microsoft Activation online
Run PowerShell via admin

irm https://get.activated.win | iex
or
irm https://massgrave.dev/get | iex
 

2. Microsoft Activation offline
slmgr /skms kms-server-address
slmgr /ipk your-license-key
slmgr /ato

| Windows Server 2025 Datacenter | D764K-2NDRG-47T6Q-P8T8W-YP6DF |
| Windows Server 2022 Datacenter | WX4NM-KYWYW-QJJR4-XV3QB-6VM33 |

| Windows 11 Enterprise | Windows 10 Enterprise | NPPR9-FWDCX-D2C8J-H872K-2YT43 |
 
slmgr /ipk D764K-2NDRG-47T6Q-P8T8W-YP6DF
slmgr /ato

slmgr /ipk WX4NM-KYWYW-QJJR4-XV3QB-6VM33
slmgr /ato

slmgr /ipk NPPR9-FWDCX-D2C8J-H872K-2YT43
slmgr /ato