Activation in Windows 10

Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow. Depending on how you got your copy of Windows 10, activation will use either a digital license or a 25-character product key.

Digital license (called a digital entitlement in Windows 10, Version 1511) is a method of activation in Windows 10 that doesn't require you to enter a product key.

How you got Windows 10	Activation method
You upgraded to Windows 10 for free from an eligible device running a genuine copy of Windows 7 or Windows 8.1.	Digital license
You bought genuine Windows 10 from the Store and successfully activated Windows 10.	Digital license
You bought a Windows 10 Pro upgrade from the Store and successfully activated Windows 10.	Digital license
You’re a Windows Insider and upgraded to the newest Windows 10 Insider Preview build on an eligible device that was running an activated earlier version of Windows and Windows 10 Preview.	Digital license
You bought a copy of Windows 10 from an authorized retailer.	Product key (On a label inside the Windows 10 box. A digital license will be given to your device for Windows 10 based on the valid product key you entered.)
You bought a digital copy of Windows 10 from an authorized retailer.	Product key (In the confirmation email you received after buying Windows 10 or in a digital locker accessible through the retailer’s website. A digital license will be given to your device for Windows 10 based on the valid product key you entered.)
You have a Volume Licensing agreement for Windows 10 or MSDN subscription.	Product key (Available through the web portal for your program.)
You bought a new device running Windows 10.	Product key (Preinstalled on your device, included with the device packaging, or included as a card or on the Certificate of Authenticity (COA) attached to the device.)

For more detailed info, see the section about activating Windows 10 that applies to you. If you need to install and activate Microsoft Office, see Download and install or reinstall Office on your PC or Mac.

Show all

Checking activation status

Activating after reinstalling Windows 10

How you activate Windows 10 after reinstalling it depends on how Windows 10 was originally installed on your device.

If you activated a free upgrade to Windows 10 or bought and activated Windows 10 from the Store, you have a digital license for your device. This means you can reinstall the same edition of Windows 10 that your device has a digital license for without entering a product key. During reinstallation, if you’re asked to enter a product key, you can skip this step. Windows 10 will automatically activate online after the installation is complete.

Notes

Make sure that Windows 10 is activated before you try to reinstall it. Select the Start button, then select Settings > Update & security > Activation. If Windows 10 isn’t activated on your device, see Get help with Windows 10 activation errors for more info.

For more info about how to create installation media to reinstall Windows 10, go to the Microsoft software download website. When creating installation media, make sure to choose the edition of Windows 10 that matches the edition already installed on your device.

Activating Windows 10 when installing it for the first time

You’ll need to use a valid product key to activate Windows 10 on a device that has never had an activated copy of Windows 10 on it.

You’ll also need to use a valid product key if you're installing an edition of Windows 10 that wasn’t previously activated on the device. For example, you'll need a valid product key to install and activate Windows 10 Pro on a device that had Windows 10 Home installed on it.

During the installation, you’ll be asked to enter a valid product key. After the installation is complete, Windows 10 will automatically be activated online. To check activation status in Windows 10, select the Start button, then select Settings > Update & security > Activation. If Windows 10 isn’t activated on your device, see Get help with Windows 10 activation errors for more info.

Note

If you don't have a Windows 10 product key, you'll have the option to buy one during setup.

Activating a new device running Windows 10

If you bought a new device running Windows 10, it will automatically activate when you connect your device to the Internet. If the activation servers are busy, you might need to wait a while for Windows to activate.

To check activation status, select the Start button, then select Settings > Update & security > Activation.

Note

In some cases, you might need to enter the Windows 10 product key that came with the device packaging, or included as a card or on the Certificate of Authenticity (COA) attached to the device.

Activating the latest Windows 10 Insider Preview

If you’re a Windows Insider and have been running Windows 10 Insider Preview builds, you’ll automatically receive new builds that have been activated, provided Windows was activated on your device before upgrading to the new build.

To check activation status in Windows 10, select the Start button, then select Settings > Update & security > Activation. If Windows 10 isn’t activated on your device, see Get help with Windows 10 activation errors for more info.

Select the Start button, then select Settings > Update & Security > Advanced options and then select the Get Insider Builds check box to become part of the Windows Insider Program.

Note

If you’re reinstalling Windows 10 Insider Preview, automatic activation occurs by digital license if the same edition of Windows 10 or Windows 10 Insider Preview (builds newer than 10240) was already activated on the device. For more info, see Activating after reinstalling Windows 10 in this topic.

Activating Windows 10 after a hardware configuration change

If you made a significant hardware change to your device (such as replacing the motherboard), Windows 10 might no longer be activated and you might see the activation error codes 0x803f7001 or 0xC004C008. If you're running Windows 10, version 1607 or later, and added your Microsoft account and linked it to the digital license on your device, you can use the Activation troubleshooter to reactivate Windows. For more info, see Using the Activation troubleshooter.

If your Original Hardware Manufacturer (OEM) changed the motherboard for you, your PC should reactivate automatically or you should be provided with a replacement product key. If you see the Activation error “Unable to reach Windows activation servers” then follow the steps in this additional help article.

Properties

Article ID: 12440 - Last Review: May 22, 2017 - Revision: 53

Applies to

Windows 10

Feedback

Was this information helpful?