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How to activate Windows 10/11?

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🔑 Windows Product Key

The product key is a 25-character code in the following format:

XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

📥 When should you enter the product key?
  • During Windows installation, you’ll be prompted to enter the product key.
  • Or after installation, follow these steps to enter the key:
  • Click the  Start button
  • Select  Settings
  • Go to  Update & Security
  • Choose  Activation > Change product key

👉 Click to open the product key change settings

🧩 After successful activation
  • Back up your activation for lifetime use – See backup instructions
  • Or sign in with your Microsoft account to link the license to your email.

Illustration of changing the product key
✦ Note: Use the key directly, do not verify the key using any app or website.