How to Activate Windows 10/11 Pro – Complete Guide

Thank you for purchasing Windows from Digital Ms Deals! Below are the two ways to activate your license: first try activating with your Product Key; if that doesn't work, use Phone Activation with our GET CID tool.

Method 1 – Activate with your Product Key

  1. Open Settings.
  2. Go to:
    • Windows 11: System → Activation
    • Windows 10: Update & Security → Activation
  3. Find Change product key and click Change.
  4. Enter your 25-character product key.
  5. Click Next.
  6. Click Activate.
  7. Once completed, Windows should display Windows is activated.

If you get an error (for example 0xC004C008 or 0xC004C003, “product key has already been used on another device”), don't worry: continue with Method 2.

Method 2 – Phone Activation (GET CID)

  1. Go to Settings → System → Activation.
  2. Under the activation options, select Activate by phone or Automated Guide, as shown in the images below.

Windows 10/11 activation – Activate by phone button

Windows 10/11 activation – Automated Guide via the product activation portal

  1. When prompted to select your country or region, choose Italy.
  2. Windows will display an Installation ID. Keep this window open.

Windows 10/11 activation – Installation ID

  1. Open the following page: https://digitalmsdeals.com/en/get-cid-microsoft-phone-activation/
  2. Enter the email address used for your purchase and the Installation ID displayed by Windows.
  3. You will receive your Confirmation ID (CID).
  4. Return to the Windows activation window and enter the Confirmation ID in the corresponding fields.
  5. Click Activate Windows to complete the activation.
  6. Once activation is successful, restart your computer.

After restarting, you can verify the activation status under Settings → System → Activation.

Need help?

If you need assistance, email us at [email protected] for quick support or remote assistance.

Thank you for choosing Digital Ms Deals!