https://itemku.com/tanya-answer/article/cara-trading-game/115004529848 This product is in the form of cdkeys  and is sent via the my item message feature This product cannot be used to upgrade any version of Windows and can only be activated under Windows 10 Professional! activation guide: In case of any problems with key activation, please try phone activation instead. Here is how you can find it: Click on Start icon and select Settings / Update & security / Activation. Select Activate by phone. Select your country in the drop-down menu and follow the on-screen instructions. Call the toll free number and follow instructions to activate your Windows. If you are having any problems with the first two steps, you could also try the following: Open Run window (can also be found under Start), type in SLUI 04 and follow with enter. The rest of the steps should be the same.