Windows Server 2025 Standard — 16-core base pack
16 core licenses · covers one server’s minimum · CALs sold separately
- Meets the 16-core-per-server minimum
- Two OSEs or Hyper-V containers per licensed set
- Every connecting user or device still needs a CAL
Specifications
| License | 16 core licenses |
|---|---|
| Minimum | 8 cores per processor, 16 per server |
| Virtualization | 2 OSEs per licensed set |
| CALs | Required, sold separately |
Delivery
Delivered by email once payment clears — within one business day, usually much sooner. Nothing is shipped. Keep the delivery email; if you lose it, send us your order number and we will resend the key.
Returns
Full refund within 30 days on any key you have not redeemed. If a key will not activate, we replace it or refund it.
What actually arrives
One email, sent once payment clears — within one business day, usually much sooner. It carries your product key, the redemption link, and instructions written for a human rather than an IT department.
Keep that email. If it ever gets buried, send us your order number and we will resend the key.
- Your key plus the core-count maths, spelled out
- Step-by-step activation instructions
- Your invoice as a PDF attachment
Activating takes about five minutes
Check your core count first
Server licensing counts physical cores, with a 16-core minimum per server and 8 per processor. Count before you activate — buying the shortfall afterwards is fine, activating short is not.
Enter the key
Server Manager → Local Server → Product ID, or run slmgr /ipk with your key from an elevated prompt, then slmgr /ato to activate.
Do not forget the CALs
The server license covers the server. Every user or device that connects still needs a CAL. They are not enforced by the installer, but they are required by the license.
Questions about this license
Is this the same product I would buy from Microsoft?
Yes — the same Windows Server 2025 Standard — 16-core base pack, redeemed the same way. Every key is validated as genuine and unredeemed before it ships. What differs is the price, and the fact that a person answers when activation goes sideways.
Is this really a one-time purchase?
Yes. There is no renewal and no subscription. You get security updates for the supported lifetime of the version, but not the new features that ship to Microsoft 365 subscribers.
Can I move it to a new computer later?
A retail license can be transferred to a replacement machine. Deactivate it on the old one first. OEM keys cannot be moved — if that matters to you, ask us before ordering and we will tell you which this is.
What if the key will not activate?
Email us the exact error text and your order number. We will either walk you through the fix or issue a replacement the same business day. If neither works, you get a full refund.
Can I get an invoice for my business?
An invoice is attached to the delivery email automatically. If you need it addressed to a company name, add it in the order notes at checkout, or email us the order number afterwards.