Windows Server 2025 License Keys

Buy a genuine Windows Server 2025 licence key in Standard or Datacenter edition, plus Windows Server 2025 RDS CALs. Windows Server 2025 is Microsoft's newest server release, with security updates until 14 November 2034. Keys are emailed instantly after payment.

Why choose Windows Server 2025?

If you are setting up a new server and your applications support it, Windows Server 2025 is the safest long-term choice. It has the longest support window of any version on sale: mainstream support runs until November 2029 and security updates until November 2034. That means fewer forced migrations over the life of your hardware.

Windows Server 2025 also offers hotpatching for both Standard and Datacenter as an Azure Arc-enabled service, letting you install many security updates without restarting the server.

Windows Server 2025 Standard vs Datacenter

Need the full comparison? See our Windows Server licence guide.

Licensing Windows Server 2025: cores, CALs and RDS

Windows Server 2025 is licensed per physical core: every core must be covered, with a minimum of 8 cores per processor and 16 per server. Each user or device that connects needs a Windows Server CAL.

For remote desktop access, each user or device also needs an RDS CAL. Our Windows Server 2025 RDS 50 Device CAL pack covers 50 devices and does not include the server licence. More options are in Server CALs and RDS licences. Not sure how many licences you need? Send us your core count and user numbers.

How delivery and activation work

• Your Windows Server 2025 key is emailed straight after payment, with download and installation instructions.
• Install from official Microsoft media and enter the key during setup or afterwards.
• If activation fails, our support team will help you resolve it or replace the key.

Windows Server 2025 FAQ

How long is Windows Server 2025 supported?

Mainstream support ends on 13 November 2029 and security updates continue until 14 November 2034.

Should I buy Windows Server 2025 or 2022?

Choose 2025 for new servers unless a vendor has only certified its software for Windows Server 2022. 2025 gives you three more years of security updates.

Do I need CALs for Windows Server 2025?

Yes, in most cases. Each user or device accessing the server needs a Windows Server CAL, and remote desktop users also need RDS CALs.

Can I run virtual machines on Windows Server 2025 Standard?

Yes, two per fully licensed server. For more, license the cores again for every two extra VMs or choose Datacenter for unlimited VMs.