Slmgr /ato How to Check If Your Windows 10 Is Activated or Not Type the following command lines and remember to hit Enter after you type each line. If you buy or find the activiation key for Windows 10 Pro, you can replace 'Windows 10 license key' in the command line after slmgr /ipk. Copy and paste the following command line in Command Prompt window and hit Enter. Click Start and type cmd, right-click Command Prompt app and choose Run as administrator. Read More How to Activate Windows 10 Pro with CMD
