How to Activate Windows 10 Using CMD without any software. You can easily activate your windows 10 pro operating system. Just follow the few steps and enjoy using Windows 10.
Step1: You need to press Windows Key + X then you can select Command Prompt (Admin).
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Step2: Just type the below command in the cmd and just hit enter.
slmgr /ipk with product_key
Note: Never forget to replace the 25 digits product key for Windows 10.
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Step3: If you see the new message pop up saying “Installed product key XXXXX-XXXXX-XXXXX-XXXXX-XXXXX successfully.”
Step4: Just close the pop-up message and restart your PC or Laptop.
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Good stuff. Worked instantly.