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WINDOWS ACTIVATION GUIDE

How to Activate Windows 10 Pro

Follow these steps to confirm your Windows edition, enter your 25-character product key, complete online activation and check that Windows 10 Pro is activated correctly.

About 5 minutes Beginner friendly Secure activation
PREPARATION

Before you start

Make sure you have the following before entering your product key:

Windows 10 Pro installedThe installed edition must match the purchased product.

Your product keyKeep the 25-character key from your delivery email ready.

Internet connectionYour computer should be connected during online activation.

Administrator accessUse an account that can change Windows settings.

Important: A Windows 10 Pro key is intended for Windows 10 Pro. It will not activate Windows 10 Home.

1
STEP 01

Check your Windows edition

  1. 1

    Open the Start menu and select Settings.

  2. 2

    Go to System, then open About.

  3. 3

    Under Windows specifications, confirm that the edition says Windows 10 Pro.

Settings
System About
EditionWindows 10 Pro
2
STEP 02

Enter the Windows 10 Pro product key

  1. 1

    Open Settings from the Start menu.

  2. 2

    Select Update & Security → Activation.

  3. 3

    Next to Change product key, select Change.

  4. 4

    Enter your 25-character product key exactly as provided.

  5. 5

    Select Next, then choose Activate.

SettingsUpdate & SecurityActivationChange product key

For your security, do not share your product key publicly or send it to anyone outside the support process for your order.

3
STEP 03

Verify that Windows is activated

Return to Settings → Update & Security → Activation. A successful activation should display an activated status.

Activation state Active

Windows 10 Pro is activated on this device.

TROUBLESHOOTING

Common activation problems

The key does not match the installed edition

Open Settings → System → About and confirm that Windows 10 Pro—not Home—is installed.

The product key was entered incorrectly

Copy the key carefully and check similar characters such as B/8, G/6 and 0/O.

Windows cannot reach the activation service

Check your internet connection, restart the device and try the Activation page again.

Activation still does not complete

Take a screenshot of the full error message and contact WDKey with your order number.

NEED MORE HELP?

Send us the activation error

Include your order number, installed Windows edition and a screenshot of the complete error message.

Contact support
FAQ

Windows 10 Pro activation questions

Your product key and delivery instructions are sent to the email address used during checkout. Check your inbox and spam folder.

No. The installed Windows edition must match the purchased product. A Windows 10 Pro key is intended for Windows 10 Pro.

An internet connection is normally required to complete online activation and verify the activation status.

Send your order number, the installed Windows edition and a screenshot showing the complete activation error. Do not publish your product key.

WDKEY SUPPORT

Need help activating Windows 10 Pro?

Our support team can help you check the installed edition and review the activation message.

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