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
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.
See the Windows lifecycle fact sheet for information about supported versions and end of service dates.
| 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 and 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 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 N LTSB 2015 | 2F77B-TNFGY-69QQF-B8YKP-D69TJ |
Windows Server LTSC
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 Datacenter: Azure Edition | XGN3F-F394H-FD2MY-PP6FD-8MCRC |
Windows Server 2022
| 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
| 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
| 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 |
