Activation Overview
- Activate Windows
- How to find my Windows product key?
Activation Troubleshooting
- Reactivating after a hardware change
- Why can't I activate Windows?
- Get help with Windows activation errors
- Using the Activation troubleshooter
Applies To
Windows 11 Windows 10
Tip:Having problems activating Windows? Try the troubleshooting steps atGet help with Windows activation errors.
Activation is a technical process that pairs the product key or digital entitlement with the hardware configuration of the device. This does not evaluate the authenticity of the copyitself,and it does not guarantee that the copy of Windows is genuine. It merely ensures that the product key or digital entitlement is valid for the hardware configuration. On the other hand, validation is the process that checks that critical Windows licensing files haven't been damaged, deleted, or removed and it is necessary to receive certain updates and downloads.
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Checking your Windows activation status
You'll first want to find out if your Windows 11is activated and linked to your Microsoft account.
It is essential that you link your Microsoft account to the Windows 11license on your device. Linking your Microsoft account with your digital license enables you to reactivate Windows using the Activation troubleshooter whenever you make a significant hardware change.
To check activation status in Windows 11, select the Start button, and then select Settings > System and then select Activation .Your activation status will be listed next to Activation status.
Check activation status in Settings
You'll see one of these activation status messages on the Activation page:
| Activation status | Description |
|---|---|
| Windows is activated |
|
| Windows is activated with a digital license |
|
| Windows is activated with a digital license linked to your Microsoft account |
|
| Windows is not activated |
|
If you need to purchase a license for your device, see "Purchase a Windows 11license."
If you have purchased a license for this device already and still receive an error message, continue to Methods of activation.
Linking your Microsoft account
To link your Microsoft account, follow these instructions:
-
Sign in as an administrator to add your Microsoft account. To confirm you're using an administrator account, select the Start button, then select Settings > Accounts > Your info . Under your name, you’ll see Administrator . If you’re not an administrator, see Manage user accounts in Windowsto create an administrator account.
Go to your info in Settings
-
Confirm that the administrator account is also your Microsoft account by checking to see if an email address is displayed above Administrator . If an email address is displayed, this is a Microsoft account. If not, you’re logged in with a local account. If you don’t yet have a Microsoft account, see How to create a new Microsoft account.
-
Once you confirm that you’re an administrator and using your Microsoft account, go back to the Activation page, select Add an account, enter your Microsoft account and password, and then select Sign in .
After your Microsoft account has been added, on the Activation page you’ll see Windows is activated with a digital license linked to your Microsoft account.
Methods of Windows activation
Depending on how you got your copy of Windows 11, you'll need either a digital license or a 25-character product key to activate it. Without one of these, you won't be able to activate your device.
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A digital license (called a digital entitlement in Windows 11) is a method of activation in Windows 11that doesn't require you to enter a product key.
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A product key is a 25-character code used to activate Windows. What you'll see is PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX.
After determining which activation method you use, follow the steps in the corresponding Activate using a digital license or Activate using a product key.
Your activation method depends on how you got your copy of Windows 11.
| If you got Windows 11by... | Activation method |
|---|---|
| Upgrading to Windows 11for free from an eligible device running a genuine copy of Windows 10, Windows 8.1or Windows 7 | Digital license If you associated or signed onto a Microsoft Account or associated your MSA with your digital license, that will be your MSA containing the digital license. |
| Buying a Windows11Pro upgrade from the Microsoft Store app and successfully activated Windows11 | Digital license When purchasing from Microsoft Store, a confirmation email was sent to confirm the purchase. That email address (MSA) will contain the digital license. |
| Being a Windows Insider and upgrading to the newest Windows11Insider Preview build on an eligible device that was running an activatedearlier version of Windows 11and Windows11Preview | Digital license The email address that you used for your Windows Insider login will likely be the MSA containing your digital license. |
| Buying genuine Windows11from the Microsoft Store app | Digital license When purchasing from Microsoft Store, a confirmation email was sent to confirm the purchase. That email address (MSA) will contain the digital license. |
| Buying a PC that came with Windows 11 | Product key Find your product key either on the device packaging or on the Certificate of Authenticity (COA) attached to your device. |
| Buying a box copy of Windows 11from an authorized retailer | Product key Find your product key on a label inside the Windows 11box. |
| Buying a digital copy of Windows 11from an authorized retailer | Product key Find your product key in the confirmation email you received after buying Windows 11or in a digital locker accessible through the retailer’s website. A digital license will be given to your device for Windows 11based on the valid product key you entered. |
| Having a Volume Licensing agreement for Windows11or MSDN subscription | Product key Your product key is available through the web portal for your program. |
| Buying a new or refurbished device running Windows11 | Product key Your product key is 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. If you bought a refurbished PC, the refurbisher, not Microsoft, must provide you a product key. |
| Buying from the Microsoft Store online | Product key Find your product key in the confirmation email that contains the order history. |
If you don't have a digital license or a product key, you can purchase a Windows 11digital license after installation finishes. Here's how:
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Select the Start button.
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Select Settings > System > Activation .
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Select Go to Store.
This opens the Microsoft Store app where you can purchase a Windows 11digital license.
Activate Windows using a digital license
Digital licenses are associated with your hardware and linked to your Microsoft account, so there's nothing you need to find on your PC. You're all set once your PC is connected to the internet and you log in to your Microsoft account.
If you don't have a digital license, you can use a product key to activate. To learn how to activate using a product key, follow the steps at Activate using a product key.
If you are installing Windows on a new device or motherboard for the first time and you do not have a product key, select I don't have a product key during the installation setup screens. When prompted, enter the Microsoft accountyou want to use to purchase a digital license for this device. Once the setup screens are completed and Windows has finished installing, go toactivation settings: Select the Start button, and then select Settings > System > Activation . Then select Open Store to purchase a digital license to activate Windows.
If you have a digital license for your device, you can reinstall the same edition of Windows 11on this device without entering a product key.
Make sure that Windows 11is activated before you try to reinstall it. To find out, select the Start button, and then select Settings > System > Activation . You’ll be able to confirm that your Windows 11has been activated and that your Microsoft account is associated with your digital license.
Check activation status in Settings
Here are the possible messages that display on the Activation page:
| Activation status | Description |
|---|---|
| Windows is activated with a digital license | Your Microsoft account is not linked to your digital license. Follow instructions for Linking your Microsoft account. |
| Windows is activated with a digital license linked to your Microsoft account | Your Microsoft account is already linked to your digital license. |
If Windows11isn’t activated on your device, see Get help with Windowsactivation errors for more info.
If your digital license is not linked to your Microsoft account, follow the steps underChecking your Activation status, Linking your Microsoft account.
Once you have your account linked, then you can run setup to reinstall Windows 11. For more info about how to create installation media to reinstall Windows 11, go to the Microsoft software download website. When creating installation media, make sure to choose the edition of Windows 11that matches the edition already installed on your device.
During reinstallation, if you’re asked to enter a product key, you can skip this step by selecting I don't have a product key.Windows 11will automatically activate online after the installation is complete. If you linked your digital license with your Microsoft account, be sure to sign in to the Microsoft account that is linked to the digital license.
When you make a significant hardware change to your device, such as replacing the motherboard, Windows11might no longer be activated.
Make sure you associate your Microsoft account to your digital license to prepare for hardware changes. The association enables you to reactivate Windows using the Activation troubleshooter if you make a significant hardware change later. Formore info, see Reactivating Windowsafter a hardware change.
Activate Windows using a product key
A product key is a25-character code, that looks like this:
PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
During installation, you'll be prompted to enter a product key. Or, after installation, to enter the product key, select the Start button, and then select Settings > System > Activation > Change product key.
Change product key in Settings
To locate your product key, see the product key table in Activation methods, What activation method do I use, a digital license or a product key?
Note:Microsoft only keeps a record of product keys if you purchased from the Microsoft online store. You can find out if you purchased from Microsoft in your Microsoft account Order history.For more help, see Find your Windows product key.
If you have a product key, then you can use Change product key to activate Windows 11in each of the following scenarios. Below is supplemental information that might help you with activation:
You’ll need to use a valid product key to activate Windows 11on a device that has never had an activated copy of Windows 11on it.
You’ll also need to use a valid product key if you're installing an edition of Windows 11that wasn’t previously activated on the device. For example, you'll need a valid product key to install and activate Windows 11Pro on a device that had Windows 11Home installed.
During the installation, you’ll be asked to enter a valid product key. After the installation is complete, Windows 11will automatically be activated online. To check activation status in Windows 11, select the Start button, and then select Settings > System > Activation .
Check activation status in Settings
If Windows 11isn’t activated on your device, see Get help with Windowsactivation errors for more info.
Note:In some cases, you might need to enter the Windows 11product key that either came with the device packaging, was included as a card, or that appears on the Certificate of Authenticity (COA) attached to the device. If you don't have a Windows 11product key, you'll have the option to buy one during installation.
When you buy a refurbished device running Windows 11, you'll need to activate Windows using the product key on the Certificate of Authenticity (COA) that's attached to your device.
If your original hardware manufacturer (OEM) changed the motherboard for you, your PC should reactivate automatically. If it doesn't activate, your OEM might have provided a COA card with a 25-character key under a gray scratch cover. Follow these steps to get activated:
Note:To remove the gray coating that conceals the product key, gently scratch it off using a coin or your fingernail.
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Select the Start button, and then select Settings > System > Activation .
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Select Change product key.
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Type in the product key found on the COA and follow the instructions.
Change product key in Settings
During reinstallation, you’ll be asked to enter a product key. When you type in your product key, you will have an activated edition of Windows 11.
If you finished setup and did not enter your product key, you can still enter your product key. Select the Start button, and then select Settings > System > Activation > Change product key.
Change product key in Settings
When you make a significant hardware change to your device, such as replacing the motherboard, Windows11might no longer be activated.
If you do not reinstall Windows, then you can select the Start button, and then select Settings > System > Activation >Change product key to reactivate your device. Otherwise you can enter your product key during installation of Windows.
If your original hardware manufacturer (OEM) changed the motherboard for you, your PC should reactivate automatically. If it doesn’t activate, your OEM might have provided a COA card that has a gray coating over a 25-character key. Follow these steps to get activated.
Note:To remove the gray coating that conceals the product key, gently scratch it off using a coin or your fingernail.
-
Select the Start button, and then select Settings > System > Activation .
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Select Change product key.
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Type in the product key found on the COA and follow the instructions.
Change product key in Settings
For more info, see Reactivating Windows after a hardware change.
Need more info?
If your license doesn’t match the Windows edition that you bought or are entitled to, Windows will not activate. Check to see which edition you purchased, Windows 11Home or Windows 11Pro. To see the edition, select the Start button, then select Settings > System > Activation .
Check your Windows edition in Settings
If you purchased the edition called Windows 11Home, you’ll need to again install Windows 11Home. If you don’t want to continue with Windows 11Home and would like to change editions, see Upgrade Windows Home to Windows Pro.
If you’re a Windows Insider and have been running Windows11Insider 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 Windows11, select the Start button, and then select Settings > System > Activation .
Check activation status in Settings
If Windows11isn’t activated on your device, see Get help with Windowsactivation errors for more info.
If you’re not already part of the Windows Insider program and you’d like to join, select the Start button and thenselect Settings > Windows Update > Windows Insider Program > Get started.
Join Windows Insider Program
Note:If you're reinstalling Windows 11Insider Preview, and the same edition of Windows 11or Windows 11Insider Preview was already activated on your device, your digital license will automatically activate Windows.
Related links
How to install or upgrade Windows using a product key
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