Windows Server 2012 R2 Standard Build 9600 Product Key Activation -

Run as Admin: slmgr.vbs /dli to see partial key. For full key, use a third-party tool like ProduKey (Nirsoft) – but you must own the license legally.

DISM /online /Set-Edition:ServerStandard /ProductKey:YOUR-PRODUCT-KEY /AcceptEula Replace ServerStandard with ServerStandardEval if needed, but typically it’s just ServerStandard. Run as Admin: slmgr

slmgr.vbs /ato If successful, you’ll see: “Product activated successfully.” you’ll see: “Product activated successfully.”