Current core market
UK / EU
Ready for the route you use now.
Use the main product grid or send the target server location. We confirm the current UK/EU stock and fulfilment route before pricing.
Windows Server for HPE ProLiant
HPE Reseller Option Kit Windows Server licences
Genuine HPE ROK Windows Server licences for HPE ProLiant servers. Standard or Datacenter, 2022 or 2025 — supplied to UK IT brokers, MSPs and IT managers with 4-hour response. ROK is BIOS-locked to HPE hardware and not transferable to non-HPE servers, so check the build before you order.
01Genuine OEM kit
02Core count checked
03Regional route confirmed
04Four-hour response
Why this route
Licensing confidence,built in.
ROK belongs to the server it is bought for. We make the hardware, edition and licence route clear before an order is placed.
- 01
Standard, Datacenter and Essentials routes
- 02
Windows Server 2022 and 2025 compatibility checked
- 03
Activation bound to compatible HPE ProLiant hardware
- 04
Physical cores and CAL scope confirmed before order
Edition navigator
One server. The right licence.No guesswork.
Choose the workload shape and see the cleanest HPE ROK route before you ask for pricing.
Final edition, core count, CALs and regional suffix are confirmed before order.
Windows Server / HPE ROK
STD / 2025Selected edition
Standard
For physical and lightly virtualised hosts.
The usual route for HPE ProLiant deployments that need Windows Server with a lower virtual-machine density.
Fit signals
- Low-density virtualisation
- Core-based licensing
- HPE ProLiant only
UK / EU SKU
P77100-A21
BIOS-locked to compatible HPE ProLiant hardwarePrice this route
Regional routing
Right edition.Right region. First time.
HPE ROK is a compatibility decision, not just a part number. We check the server, edition, physical cores, CALs and regional fulfilment path before an order is placed.
- Region suffix matched
- Edition matched to workload
- Physical cores and CALs checked
- HPE ProLiant fit confirmed
Primary
Expansion route
AMS
Americas, without assumptions.
For US and Americas deployments, send the server location and fulfilment requirement. We confirm the right regional suffix before quoting.
Featured HPE ROK
Pricing on the key SKUs.
HPEQuote-ledHPE Windows Server 2025 Standard — 16-Core ROK
SKU P77100-A21
Price on application4-hour response
HPEIn stockHPE Windows Server 2025 — 5 User CALs
SKU P77112-B21
£175ex VAT
HPEQuote-ledHPE Windows Server 2025 Datacenter — 16-Core ROK
SKU P77101-A21
Price on application4-hour response- HPEIn stock
HPE Windows Server 2025 — 50 User CALs
SKU P77116-B21
£1,749Was £2,300.90ex VAT - HPEIn stock
HPE Windows Server 2025 — 1 User CAL
SKU P77110-B21
£41ex VAT - HPEIn stock
HPE Windows Server 2025 — 10 User CALs
SKU P77114-B21
£379.95Was £480.12ex VAT
Questions
The things people ask first.
Standard or Datacenter — which do I need?
Standard for most setups. Datacenter only if you need unlimited VMs on that physical server. Standard covers 2 VMs per licence pair. Datacenter is unlimited.Will ROK activate on a Dell or Lenovo server?
No. ROK is BIOS-locked to HPE hardware. If you need licences for non-HPE servers, ask about standard Microsoft volume licensing.Do you supply Windows Server 2022 and 2025 HPE ROK?
Yes. Availability varies by edition, core pack and regional suffix, so the exact route and lead time are confirmed against the requested HPE ProLiant deployment before order.How do regional HPE ROK SKU suffixes work?
HPE ROK part numbers can vary by region and fulfilment route. UK/EU is our current core market, while AMS is an expansion route. We do not assume a suffix from the part number alone; we confirm the server location, customer region and supply route before quoting.Do I need Windows Server CALs with HPE ROK?
For Windows Server Standard and Datacenter, users or devices accessing the server normally need Windows Server CALs. Remote Desktop Services requires separate RDS CALs if you use RDS. CALs are quoted separately from the HPE ROK server licence unless stated otherwise.How many cores do I need to license?
Windows Server Standard and Datacenter are licensed by physical cores, with a minimum of 16 core licences per server and 8 core licences per physical processor. If the server has more physical cores than the minimum, we quote the additional core packs needed for that host.Should I choose Standard or Datacenter?
Standard is usually the first check for low-density or non-virtualised servers. Datacenter is usually considered when the host is heavily virtualised because it includes broader virtualisation rights. The right answer depends on physical cores, processor count and VM count.
Resources
Guides for buyers
- HPE ROK
HPE ROK Standard vs Datacenter
Standard is usually first choice for 1–2 VMs. Beyond that, compare stacked Standard against Datacenter pricing. They share the same base platform; Datacenter adds virtualisation rights and a few features.
5 min read - HPE ROK
HPE ROK vs standard Windows Server
Buy HPE ROK if it runs on an HPE ProLiant server. Buy a volume or standalone licence for anything else. Same Windows Server, cheaper, locked to HPE hardware.
6 min read - Windows Server
Windows Server core licensing explained
Windows Server 2022 and 2025 are licensed per physical core. Every server needs at least 16 cores licensed, and at least 8 per processor. Here is how to count what you actually need.
6 min read - HPE ROK
Where to buy genuine HPE ROK in the UK
Buy HPE ROK from a reseller that supplies genuine, channel-traceable OEM kits and can confirm the licence matches your HPE ProLiant. Here is what to check.
5 min read
HPE ProLiant licensing
Send the server spec.
We'll match the HPE ROK route.
Tell us the ProLiant model, processor count, physical cores, edition and user or device access requirement. We will confirm the compatible HPE OEM route before quotation.