---
title: Key Management Services (KMS) client activation and product keys
description: Find the Generic Volume License Keys (GVLKs) required to activate Windows and Windows Server editions using a Key Management Services (KMS) host.
ms.topic: concept-article
author: robinharwood
ms.author: roharwoo
ms.date: 06/25/2025
---

# KMS client activation and product keys

To use Key Management Services (KMS), you need to have a KMS host available on your local network. Computers that activate with a KMS host need to have a specific product key. This key is sometimes referred to as the KMS client key, but it's formally known as a Microsoft Generic Volume License Key (GVLK). Computers that are running volume licensing editions of Windows Server and Windows client are, by default, KMS clients with no extra configuration needed as the relevant GVLK is already there.

There are some scenarios where you'll need to add the GVLK to the computer you wish to activate against a KMS host, such as:

- Converting a computer from using a Multiple Activation Key (MAK)
- Converting a retail license of Windows to a KMS client
- If the computer was previously a KMS host

To use the GVLKs listed, you need a KMS host on your local network. If you don't have one, you can learn how to [create a KMS host](kms-create-host.md).

The KMS host requires its own key, known as the KMS host key, to activate or authenticate with Microsoft. This key is available in the [Microsoft 365 admin center](https://go.microsoft.com/fwlink/p/?linkid=2024339) for Open, Open Value, Select, Enterprise, and Services Provider License agreements. You can get help from the local [Microsoft Activation Center](https://www.microsoft.com/licensing/existing-customer/activation-centers).

> [!CAUTION]
> When you activate Windows or Windows Server with a KMS host, the keys provided here are intended for volume licensing scenarios and **can't be used** with retail editions. KMS client keys **won't activate** or serve as a retail license key. If you installed a retail copy of Windows, you must use another activation method, like a MAK or by purchasing a genuine retail license. To learn more, see:
>
> - [Activate Windows](https://support.microsoft.com/windows/activate-windows-c39005d4-95ee-b91e-b399-2820fda32227).
> - [Windows Server pricing and licensing](https://www.microsoft.com/windows-server/pricing).

## Install a product key

If you're converting a computer from a KMS host, MAK, or retail edition of Windows to a KMS client, install the applicable product key (GVLK) from the list in this article. To install a client product key, open an administrative command prompt on the client, and run the following command and then press **Enter**:

```cmd
slmgr /ipk <product key>
```

For example, to install the product key for Windows Server 2022 Datacenter Edition, run the following command and then press **Enter**:

```cmd
slmgr /ipk WX4NM-KYWYW-QJJR4-XV3QB-6VM33
```

## Generic Volume License Keys

In the tables that follow, you'll find the GVLKs for each version and edition of Windows. LTSC is _Long-Term Servicing Channel_, while LTSB is _Long-Term Servicing Branch_.

### Windows 11 and Windows 10 Semi-Annual Channel

See the [Windows lifecycle fact sheet](https://support.microsoft.com/help/13853/windows-lifecycle-fact-sheet) for information about supported versions and end of service dates.

| Operating system edition          | KMS Client Product Key        |
|-----------------------------------|-------------------------------|
| Windows 11 Pro<br>Windows 10 Pro | W269N-WFGWX-YVC9B-4J6C9-T83GX |
| Windows 11 Pro N<br>Windows 10 Pro N | MH37W-N47XK-V7XM9-C7227-GCQG9 |
| Windows 11 Pro for Workstations<br>Windows 10 Pro for Workstations | NRG8B-VKK3Q-CXVCJ-9G2XF-6Q84J |
| Windows 11 Pro for Workstations N<br>Windows 10 Pro for Workstations N | 9FNHH-K3HBT-3W4TD-6383H-6XYWF |
| Windows 11 Pro Education<br>Windows 10 Pro Education | 6TP4R-GNPTD-KYYHQ-7B7DP-J447Y |
| Windows 11 Pro Education N<br>Windows 10 Pro Education N | YVWGF-BXNMC-HTQYQ-CPQ99-66QFC |
| Windows 11 Education<br>Windows 10 Education | NW6C2-QMPVW-D7KKK-3GKT6-VCFB2 |
| Windows 11 Education N<br>Windows 10 Education N | 2WH4N-8QGBV-H22JP-CT43Q-MDWWJ |
| Windows 11 Enterprise<br>Windows 10 Enterprise | NPPR9-FWDCX-D2C8J-H872K-2YT43 |
| Windows 11 Enterprise N<br>Windows 10 Enterprise N | DPH2V-TTNVB-4X9Q3-TJR4H-KHJW4 |
| Windows 11 Enterprise G<br>Windows 10 Enterprise G | YYVX9-NTFWV-6MDM3-9PT4T-4M68B |
| Windows 11 Enterprise G N<br>Windows 10 Enterprise G N | 44RPN-FTY23-9VTTB-MP9BX-T84FV |

### Windows Enterprise LTSC and LTSB

# [Windows 11 LTSC 2024 <br> Windows 10 LTSC 2021, 2019](#tab/windows1110ltsc)

| Operating system edition          | KMS Client Product Key        |
|-----------------------------------|-------------------------------|
| Windows 11 Enterprise LTSC 2024 <br> Windows 10 Enterprise LTSC 2021 <br> Windows 10 Enterprise LTSC 2019 | M7XTQ-FN8P6-TTKYV-9D4CC-J462D |
| Windows 11 Enterprise N LTSC 2024 <br> Windows 10 Enterprise N LTSC 2021 <br> Windows 10 Enterprise N LTSC 2019 | 92NFX-8DJQP-P6BBQ-THF9C-7CG2H |

# [Windows IoT LTSC](#tab/winowsiot)

| Operating system edition          | KMS Client Product Key        |
|-----------------------------------|-------------------------------|
| Windows IoT Enterprise LTSC 2024 <br> Windows IoT Enterprise LTSC 2021 | KBN8V-HFGQ4-MGXVD-347P6-PDQGT |

> [!NOTE]
> For ImageVersion: 10.0.19044.2905 or later, see [Windows IoT Enterprise LTSC in Volume License](/windows/iot/iot-enterprise/deployment/volume-license).

# [Windows 10 LTSB 2016](#tab/windows102016)

| Operating system edition          | KMS Client Product Key        |
|-----------------------------------|-------------------------------|
| Windows 10 Enterprise LTSB 2016   | DCPHK-NFMTC-H88MJ-PFHPY-QJ4BJ |
| Windows 10 Enterprise N LTSB 2016 | QFFDN-GRT3P-VKWWX-X7T3R-8B639 |

# [Windows 10 LTSB 2015](#tab/windows102015)

| Operating system edition          | KMS Client Product Key        |
|-----------------------------------|-------------------------------|
| Windows 10 Enterprise LTSB 2015   | WNMTR-4C88C-JK8YV-HQ7T2-76DF9 |
| Windows 10 Enterprise N LTSB 2015 | 2F77B-TNFGY-69QQF-B8YKP-D69TJ |

---

### Earlier versions of Windows Client

# [Windows 8.1](#tab/windows81)

| Operating system edition | KMS Client Product Key        |
|--------------------------|-------------------------------|
| Windows 8.1 Pro          | GCRJD-8NW9H-F2CDX-CCM8D-9D6T9 |
| Windows 8.1 Pro N        | HMCNV-VVBFX-7HMBH-CTY9B-B4FXY |
| Windows 8.1 Enterprise   | MHF9N-XY6XB-WVXMC-BTDCT-MKKG7 |
| Windows 8.1 Enterprise N | TT4HM-HN7YT-62K67-RGRQJ-JFFXW |

# [Windows 8](#tab/windows8)

| Operating system edition | KMS Client Product Key        |
|--------------------------|-------------------------------|
| Windows 8 Pro            | NG4HW-VH26C-733KW-K6F98-J8CK4 |
| Windows 8 Pro N          | XCVCF-2NXM9-723PB-MHCB7-2RYQQ |
| Windows 8 Enterprise     | 32JNW-9KQ84-P47T8-D8GGY-CWCK7 |
| Windows 8 Enterprise N   | JMNMF-RHW7P-DMY6X-RF3DR-X2BQT |

# [Windows 7](#tab/windows7)

| Operating system edition | KMS Client Product Key        |
|--------------------------|-------------------------------|
| Windows 7 Professional   | FJ82H-XT6CR-J8D7P-XQJJ2-GPDD4 |
| Windows 7 Professional N | MRPKT-YTG23-K7D7T-X2JMM-QY7MG |
| Windows 7 Professional E | W82YF-2Q76Y-63HXB-FGJG9-GF7QX |
| Windows 7 Enterprise     | 33PXH-7Y6KF-2VJC9-XBBR8-HVTHH |
| Windows 7 Enterprise N   | YDRBP-3D83W-TY26F-D46B2-XCKRJ |
| Windows 7 Enterprise E   | C29WB-22CC8-VJ326-GHFJW-H9DH4 |

# [Windows Vista](#tab/windowsvista)

| Operating system edition | KMS Client Product Key        |
|--------------------------|-------------------------------|
|Windows Vista Business | YFKBB-PQJJV-G996G-VWGXY-2V3X8 |
|Windows Vista Business N | HMBQG-8H2RH-C77VX-27R82-VMQBT |
|Windows Vista Enterprise | VKK3X-68KWM-X2YGT-QR4M6-4BWMV |
|Windows Vista Enterprise N | VTC42-BM838-43QHV-84HX6-XJXKV |

---

### Windows Server LTSC

# [Windows Server 2025](#tab/server2025)

| Operating system edition       | KMS Client Product Key        |
|--------------------------------|-------------------------------|
| Windows Server 2025 Standard   | TVRH6-WHNXV-R9WG3-9XRFY-MY832 |
| Windows Server 2025 Datacenter | D764K-2NDRG-47T6Q-P8T8W-YP6DF |
| Windows Server 2025 Datacenter: Azure Edition | XGN3F-F394H-FD2MY-PP6FD-8MCRC |

# [Windows Server 2022](#tab/server2022)

| Operating system edition       | KMS Client Product Key        |
|--------------------------------|-------------------------------|
| Windows Server 2022 Standard   | VDYBN-27WPP-V4HQT-9VMD4-VMK7H |
| Windows Server 2022 Datacenter | WX4NM-KYWYW-QJJR4-XV3QB-6VM33 |
| Windows Server 2022 Datacenter: Azure Edition | NTBV8-9K7Q8-V27C6-M2BTV-KHMXV |

# [Windows Server 2019](#tab/server2019)

| Operating system edition       | KMS Client Product Key        |
|--------------------------------|-------------------------------|
| Windows Server 2019 Standard   | N69G4-B89J2-4G8F4-WWYCC-J464C |
| Windows Server 2019 Datacenter | WMDGN-G9PQG-XVVXX-R3X43-63DFG |
| Windows Server 2019 Essentials | WVDHN-86M7X-466P6-VHXV7-YY726 |

# [Windows Server 2016](#tab/server2016)

| Operating system edition       | KMS Client Product Key        |
|--------------------------------|-------------------------------|
| Windows Server 2016 Standard   | WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY |
| Windows Server 2016 Datacenter | CB7KF-BWN84-R7R2Y-793K2-8XDDG |
| Windows Server 2016 Essentials | JCKRF-N37P4-C2D82-9YXRT-4M63B |

---

### Windows Server Semi-Annual Channel

#### Windows Server, versions 20H2, 2004, 1909, 1903, and 1809

| Operating system edition  | KMS Client Product Key        |
|---------------------------|-------------------------------|
| Windows Server Standard   | N2KJX-J94YW-TQVFB-DG9YT-724CC |
| Windows Server Datacenter | 6NMRW-2C8FM-D24W7-TQWMY-CWH2D |

> [!IMPORTANT]
> Windows Server, version 20H2 reached end of service on August 9, 2022 and is no longer receiving security updates. This includes the retirement of Windows Server Semi-Annual Channel (SAC) with no future releases.
>
> Customers using Windows Server SAC should move to **[Azure Stack HCI](/azure/azure-local/)**. Alternatively, customers might use the Long-Term Servicing Channel of Windows Server.

### Earlier versions of Windows Server

# [Windows Server, version 1803](#tab/version1803)

| Operating system edition  | KMS Client Product Key        |
|---------------------------|-------------------------------|
| Windows Server Standard   | PTXN8-JFHJM-4WC78-MPCBR-9W4KR |
| Windows Server Datacenter | 2HXDN-KRXHB-GPYC7-YCKFJ-7FVDG |

# [Windows Server, version 1709](#tab/version1709)

| Operating system edition  | KMS Client Product Key        |
|---------------------------|-------------------------------|
| Windows Server Standard   | DPCNP-XQFKJ-BJF7R-FRC8D-GF6G4 |
| Windows Server Datacenter | 6Y6KB-N82V8-D8CQV-23MJW-BWTG6 |

# [Windows Server 2012 R2](#tab/2012r2)

| Operating system edition               | KMS Client Product Key        |
|----------------------------------------|-------------------------------|
| Windows Server 2012 R2 Standard        | D2N9P-3P6X9-2R39C-7RTCD-MDVJX |
| Windows Server 2012 R2 Datacenter      | W3GGN-FT8W3-Y4M27-J84CP-Q3VJ9 |
| Windows Server 2012 R2 Essentials      | KNC87-3J2TX-XB4WP-VCPJV-M4FWM |

# [Windows Server 2012](#tab/2012)

| Operating system edition                | KMS Client Product Key        |
|-----------------------------------------|-------------------------------|
| Windows Server 2012                     | BN3D2-R7TKB-3YPBD-8DRP2-27GG4 |
| Windows Server 2012 N                   | 8N2M2-HWPGY-7PGT9-HGDD8-GVGGY |
| Windows Server 2012 Single Language     | 2WN2H-YGCQR-KFX6K-CD6TF-84YXQ |
| Windows Server 2012 Country Specific    | 4K36P-JN4VD-GDC6V-KDT89-DYFKP |
| Windows Server 2012 Standard            | XC9B7-NBPP2-83J2H-RHMBY-92BT4 |
| Windows Server 2012 MultiPoint Standard | HM7DN-YVMH3-46JC3-XYTG7-CYQJJ |
| Windows Server 2012 MultiPoint Premium  | XNH6W-2V9GX-RGJ4K-Y8X6F-QGJ2G |
| Windows Server 2012 Datacenter          | 48HP8-DN98B-MYWDG-T2DCC-8W83P |
| Windows Server 2012 Essentials          | HTDQM-NBMMG-KGYDT-2DTKT-J2MPV |

# [Windows Server 2008 R2](#tab/2008r2)

| Operating system edition                         | KMS Client Product Key        |
|--------------------------------------------------|-------------------------------|
| Windows Server 2008 R2 Web                       | 6TPJF-RBVHG-WBW2R-86QPH-6RTM4 |
| Windows Server 2008 R2 HPC edition               | TT8MH-CG224-D3D7Q-498W2-9QCTX |
| Windows Server 2008 R2 Standard                  | YC6KT-GKW9T-YTKYR-T4X34-R7VHC |
| Windows Server 2008 R2 Enterprise                | 489J6-VHDMP-X63PK-3K798-CPX3Y |
| Windows Server 2008 R2 Datacenter                | 74YFP-3QFB3-KQT8W-PMXWJ-7M648 |
| Windows Server 2008 R2 for Itanium-based Systems | GT63C-RJFQ3-4GMB6-BRFB9-CB83V |

# [Windows Server 2008](#tab/2008)

| Operating system edition                       | KMS Client Product Key        |
|------------------------------------------------|-------------------------------|
| Windows Web Server 2008                        | WYR28-R7TFJ-3X2YQ-YCY4H-M249D |
| Windows Server 2008 Standard                   | TM24T-X9RMF-VWXK6-X8JC9-BFGM2 |
| Windows Server 2008 Standard without Hyper-V   | W7VD6-7JFBR-RX26B-YKQ3Y-6FFFJ |
| Windows Server 2008 Enterprise                 | YQGMW-MPWTJ-34KDK-48M3W-X4Q6V |
| Windows Server 2008 Enterprise without Hyper-V | 39BXF-X8Q23-P2WWT-38T2F-G3FPG |
| Windows Server 2008 HPC                        | RCTX3-KWVHP-BR6TB-RB6DM-6X7HP |
| Windows Server 2008 Datacenter                 | 7M67G-PC374-GR742-YH8V4-TCBY3 |
| Windows Server 2008 Datacenter without Hyper-V | 22XQ2-VRXRG-P8D42-K34TD-G3QQC |
| Windows Server 2008 for Itanium-Based Systems  | 4DWFP-JF3DJ-B7DTH-78FJB-PDRHK |

---