Serial Number Choice
KMS Client Serial Numbers
The serial numbers below should be used with your client or server OS to activate them with a KMS server. By using these serial numbers, Windows will know it needs to activate through a KMS server.
- For KMS clients, always use a CLIENT KMS key: public
| Windows 11 Pro Windows 10 Professional | W269N-WFGWX-YVC9B-4J6C9-T83GX |
| Windows 11 Professional N Windows 10 Professional N | MH37W-N47XK-V7XM9-C7227-GCQG9 |
| Windows 11 Professional for Workstations Windows 10 Professional for Workstations | NRG8B-VKK3Q-CXVCJ-9G2XF-6Q84J |
| Windows 11 Professional for Workstations N Windows 10 Professional for Workstations N | 9FNHH-K3HBT-3W4TD-6383H-6XYWF |
| Windows 11 Professional Education Windows 10 Professional Education | 6TP4R-GNPTD-KYYHQ-7B7DP-J447Y |
| Windows 11 Professional Education N Windows 10 Professional 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 |
Source: KMS Client Activation Keys
| 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 |
KMS Server Serial Numbers
To obtain these serial numbers, visit your KMS portal. The serial numbers are identified as KMS keys and should ONLY be used with a KMS server.
Windows 10 Key or Windows Server Key?
- Client KMS keys (Windows 11) will only activate client OS (Windows 10 and Windows 11).
- Server KMS keys (Windows 2016/2019/2022) will activate both client OS and server OS. (best choice)
Whenever possible, use a server KMS key (the most recent OS available) for your KMS server. This allows you to activate all OS (client and server) within your network.
Listing KMS in DNS
The nslookup command allows you to list the KMS servers registered in the DNS.
nslookup -q=srv _vlmcs._tcp
It is possible to have multiple KMS servers registered in DNS. If this happens, you may have used the wrong serial number to activate your workstations.
Installing the KMS Role
Installation of the KMS Role
- Install the Windows role “Volume Activation Services”.
KMS Role Configuration
- In the post-configuration tasks, launch the “Volume Activation Tools”.
- Select “Key Management Service”.
- Enter the KMS serial number for Windows 20xx.
- The DNS publication will be used.
Note: DNS publication allows clients with a Volume license of Windows to activate automatically.
- Finally, activate the KMS server.
Role Validation
On the KMS Server
Note: The server becomes active after 25 activation requests for client OS and 5 requests for server OS.
- The command
slmgr /dlvallows you to check the status of the KMS server.
- To check the number of requests and activated licenses, run
slmgr.vbs /dli. The “Current Count” value must be greater than 25 for the server to be active.
Enforce Registration
- To force KMS registration on the 25 workstations, use the following commands:
c:\windows\system32\cscript.exe "c:\windows\system32\slmgr.vbs" /skms serveurKMS.monlab.lan:1688
c:\windows\system32\cscript.exe "c:\windows\system32\slmgr.vbs" /ato
- To re-enable KMS server discovery via DNS:
c:\windows\system32\cscript.exe "c:\windows\system32\slmgr.vbs" /ckms
Tip: Manually Create a DNS Record (if not using Microsoft DNS)
Create a manual DNS record with the following:
- Service: _VLMCS
- Protocol: _TCP
- Priority: 0
- Weight: 0
- Port: 1688
- Target: The FQDN of the KMS host
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