Key Management Services (KMS) is a technology developed by Microsoft that enables organizations to activate computers running Windows and Office products within their network. KMS provides a centralized activation mechanism for volume-licensed versions of Microsoft products, eliminating the need for each computer to connect to Microsoft for individual activation.
It allows IT administrators to activate multiple computers simultaneously, making it more efficient and cost-effective for larger organizations. KMS establishes a local activation service hosted on a KMS server accessible within the organization’s network. Computers running volume licensing editions of Windows and Office products can then activate against the KMS server using a product key and establish a local activation service.
How to use Key Management Services (KMS)?
To utilize KMS, you must have a KMS host accessible on your local network. Devices that activate with a KMS host necessitate a specific product key called the KMS client key. However, it is officially known as a Microsoft Generic Volume License Key (GVLK). By default, computers running volume licensing versions of Windows Server and Windows client are KMS clients, and no extra configuration is required, as the relevant GVLK is already present.
In certain situations, you may need to input the Generic Volume License Key (GVLK) on a computer you want to activate against a KMS host. These scenarios include:
- Changing a computer’s activation method from using a Multiple Activation Key (MAK) to KMS
- Converting a retail Windows license to a KMS client
- If the computer was previously a KMS host.
How to install a KMS product key?
If you intend to change a computer from functioning as a KMS host, MAK, or retail edition of Windows to a KMS client, you need to install the relevant product key (GVLK) from the list provided in this article. To install the product key for a client, you should open an administrative command prompt on the client, and execute the following command. Then, press Enter:
Windows Command Prompt: 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:
Windows Command Prompt: slmgr /ipk WX4NM-KYWYW-QJJR4-XV3QB-6VM33Generic Volume License Keys 2024 / 2025
The following tables contain the GVLKs for each Windows version and edition. LTSC stands for Long-Term Servicing Channel, while LTSB stands for Long-Term Servicing Branch.
Windows Server LTSC Keys
Windows Server 2025
| 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 Azure Edition | XGN3F-F394H-FD2MY-PP6FD-8MCRC |
Windows Server 2022
| Operating system edition | KMS Client Product Key |
|---|---|
| Windows Server 2022 Datacenter | WX4NM-KYWYW-QJJR4-XV3QB-6VM33 |
| Windows Server 2022 Datacenter Azure Edition | NTBV8-9K7Q8-V27C6-M2BTV-KHMXV |
| Windows Server 2022 Standard | VDYBN-27WPP-V4HQT-9VMD4-VMK7H |
Windows Server 2019
| Operating system edition | KMS Client Product Key |
|---|---|
| Windows Server 2019 Datacenter | WMDGN-G9PQG-XVVXX-R3X43-63DFG |
| Windows Server 2019 Standard | N69G4-B89J2-4G8F4-WWYCC-J464C |
| Windows Server 2019 Essentials | WVDHN-86M7X-466P6-VHXV7-YY726 |
Windows Server 2016
| Operating system edition | KMS Client Product Key |
|---|---|
| Windows Server 2016 Datacenter | CB7KF-BWN84-R7R2Y-793K2-8XDDG |
| Windows Server 2016 Standard | WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY |
| Windows Server 2016 Essentials | JCKRF-N37P4-C2D82-9YXRT-4M63B |
Windows Server Semi-Annual Channel
Windows Server, versions 20H2, 2004, 1909, 1903, and 1809
Windows Server version 20H2 officially ended its service on August 9, 2022, and will no longer receive security updates. This also means that the Windows Server Semi-Annual Channel (SAC) has been retired, and there will be no future releases.
If you are currently using Windows Server SAC, it is recommended that you migrate to Azure Stack HCI. Otherwise, you may opt for the Windows Server Long-Term Servicing Channel.
| Operating system edition | KMS Client Product Key |
|---|---|
| Windows Server Datacenter | 6NMRW-2C8FM-D24W7-TQWMY-CWH2D |
| Windows Server Standard | N2KJX-J94YW-TQVFB-DG9YT-724CC |
Windows 11 and Windows 10 Semi-Annual Channel
| Operating system edition | KMS Client Product Key |
|---|---|
| Windows 11 Pro Windows 10 Pro | W269N-WFGWX-YVC9B-4J6C9-T83GX |
| Windows 11 Pro N Windows 10 Pro N | MH37W-N47XK-V7XM9-C7227-GCQG9 |
| Windows 11 Pro for Workstations Windows 10 Pro for Workstations | NRG8B-VKK3Q-CXVCJ-9G2XF-6Q84J |
| Windows 11 Pro for Workstations N Windows 10 Pro for Workstations N | 9FNHH-K3HBT-3W4TD-6383H-6XYWF |
| Windows 11 Pro Education Windows 10 Pro Education | 6TP4R-GNPTD-KYYHQ-7B7DP-J447Y |
| Windows 11 Pro Education N Windows 10 Pro Education N | YVWGF-BXNMC-HTQYQ-CPQ99-66QFC |
| Windows 11 Education Windows 10 Education | NW6C2-QMPVW-D7KKK-3GKT6-VCFB2 |
| Windows 11 Education N Windows 10 Education N | 2WH4N-8QGBV-H22JP-CT43Q-MDWWJ |
| Windows 11 Enterprise Windows 10 Enterprise | NPPR9-FWDCX-D2C8J-H872K-2YT43 |
| Windows 11 Enterprise N Windows 10 Enterprise N | DPH2V-TTNVB-4X9Q3-TJR4H-KHJW4 |
| Windows 11 Enterprise G Windows 10 Enterprise G | YYVX9-NTFWV-6MDM3-9PT4T-4M68B |
| Windows 11 Enterprise G N Windows 10 Enterprise G N | 44RPN-FTY23-9VTTB-MP9BX-T84FV |
Windows Enterprise LTSC and LTSB
Windows 11 LTSC 2024, Windows 10 LTSC 2021, 2019
| Operating system edition | KMS Client Product Key |
|---|---|
| Windows 11 Enterprise LTSC 2024 Windows 10 Enterprise LTSC 2021 Windows 10 Enterprise LTSC 2019 | M7XTQ-FN8P6-TTKYV-9D4CC-J462D |
| Windows 11 Enterprise N LTSC 2024 Windows 10 Enterprise N LTSC 2021 Windows 10 Enterprise N LTSC 2019 | 92NFX-8DJQP-P6BBQ-THF9C-7CG2H |
Windows IoT LTSC
| perating system edition | KMS Client Product Key |
|---|---|
| Windows IoT Enterprise LTSC 2024 Windows IoT Enterprise LTSC 2021 | KBN8V-HFGQ4-MGXVD-347P6-PDQGT |
Windows 10 LTSB 2016
| 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
| Operating system edition | KMS Client Product Key |
|---|---|
| Windows 10 Enterprise LTSB 2015 | WNMTR-4C88C-JK8YV-HQ7T2-76DF9 |
| Windows 10 Enterprise LTSB N 2015 | 2F77B-TNFGY-69QQF-B8YKP-D69TJ |
Earlier versions of Windows Server
Windows Server, version 1803
| Operating system edition | KMS Client Product Key |
|---|---|
| Windows Server Datacenter | 2HXDN-KRXHB-GPYC7-YCKFJ-7FVDG |
| Windows Server Standard | PTXN8-JFHJM-4WC78-MPCBR-9W4KR |
Windows Server, version 1709
| Operating system edition | KMS Client Product Key |
|---|---|
| Windows Server Datacenter | 6Y6KB-N82V8-D8CQV-23MJW-BWTG6 |
| Windows Server Standard | DPCNP-XQFKJ-BJF7R-FRC8D-GF6G4 |
Windows Server 2012 R2
| 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
| 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
| 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
| 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 |
Earlier versions of Windows Client
Windows 8.1
| 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
| 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
| 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
| 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 |
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