The short answer
Windows 11 Pro is a one-time purchase: buy a key, activate a device, own it. Windows 11 Enterprise is a recurring cost, licensed per person rather than per PC, and Microsoft’s own Windows 11 Enterprise page states outright that Windows Enterprise E3 “upgrades Windows 11 Pro” — it isn’t a separate operating system so much as a subscription entitlement layered on top of one you already own. Every plan on that page ends in the same button: “Contact Sales.” There is nothing to click “buy” on.
Almost every UK small or medium business
- Fewer than roughly 150 devices
- No dedicated IT/security team managing fleet-wide policy
- Wants to own the licence outright, not rent it monthly
- Already gets BitLocker, Hyper-V, Remote Desktop and Group Policy from Pro alone
Larger or regulated organisations
- Already committed to Microsoft 365 E3/E5 for other reasons
- Centrally managing a large, changing device estate
- Needs advanced threat protection or eDiscovery-grade compliance tooling
- Has the IT resource to run Autopatch, Intune and Azure AD at scale
What Windows 11 Enterprise actually is
Enterprise is part of Microsoft 365 Enterprise, not a standalone Windows edition sold to the public. Microsoft’s own words: “Windows 11 Enterprise is part of Microsoft 365 Enterprise, which provides productivity and collaboration apps, device management, and security services.” There’s no retail SKU, no Microsoft Store listing, no volume-licence key you activate once and keep. Access is granted for as long as the subscription is paid, to a user rather than a device — and if the subscription lapses, the device’s Windows features revert to whatever edition sits underneath, which is why Pro has to be there first.
“Windows 11 Enterprise E3 upgrades Windows 11 Pro and adds: a broad range of options for operating system deployment and update control. Comprehensive device and app management. Serverless print management with Universal Print. Advanced protection against modern cyberthreats. Automatic Windows and Microsoft 365 updates with Windows Autopatch.” Licensed per user, and every plan is “Contact Sales” — there is no listed price anywhere on the page.
What Enterprise adds over Pro
Nothing here is a feature you’d notice while working — it’s IT-management and security tooling for running many devices centrally, not for using any one of them. If you’re comparing this against BitLocker, Remote Desktop or Hyper-V, stop: those are all already in standard Windows 11 Pro, and each has its own dedicated guide on this site.
| Enterprise adds over Pro | What that means in practice |
|---|---|
| Broader OS deployment and update control | More options for how and when updates roll out across a fleet, not a feature you interact with day to day |
| Comprehensive device and app management | Deeper Intune/MDM policy control than Pro’s management options support |
| Universal Print | Serverless, cloud-managed printing — only relevant if you’re already running print servers you want to retire |
| Advanced threat protection | Enterprise-grade security tooling beyond Defender Antivirus, which Pro already includes |
| Windows Autopatch | Automatic, IT-managed rollout of Windows and Microsoft 365 updates across the estate |
| Microsoft Defender for Endpoint (E5 only) | A full endpoint security solution, sitting on top of everything E3 already includes |
One genuinely useful, Microsoft-stated proxy for who this is built for: Microsoft’s free deployment-support programme, FastTrack, is only offered to “Windows 11 Enterprise customers with 150 seats or more.” That’s not a hard rule for whether you’re allowed to buy it — but it’s a fair indication of the scale Microsoft itself is building the offer around, and it’s well above the size of most UK SMEs reading this.
What it actually costs
Microsoft doesn’t publish a standalone price for Windows Enterprise on its own — every plan is “Contact Sales.” In practice, almost every business that has Enterprise gets it as part of a Microsoft 365 E3 or E5 subscription, so that’s the realistic proxy for what it costs. Multiple current UK reseller sources independently quote Microsoft 365 E3 at £29.00 per user, per month, and E5 at £47.10 per user, per month, both excluding VAT on an annual commitment. These are third-party-sourced figures, not a Microsoft list price — worth stating plainly, since it’s the one number in this article Microsoft itself won’t confirm.
| Licence | Cost model | Per user, per year | 10-person office, 5 years |
|---|---|---|---|
| Windows 11 Pro | One-time purchase | £38 once | £380 total, ever |
| Windows Enterprise E3 (via Microsoft 365 E3) | Subscription, per user | £348.00 | £17,400 |
| Windows Enterprise E5 (via Microsoft 365 E5) | Subscription, per user | £565.20 | £28,260 |
That’s not really an apples-to-apples comparison — the Microsoft 365 subscription also buys Exchange, Teams, Intune and everything else in the plan, not just the Windows edition. But it is the honest shape of the decision: a one-time £38 outlay against a bill that renews every year for as long as the business exists, for management and security tooling built for an estate most SMEs don’t run.
When Enterprise is the right call
Not “never” — a small number of readers have a genuine need, and it’s worth being straight about who they are rather than talking everyone out of it regardless of their situation.
- You’re already paying for Microsoft 365 E3 or E5 for other reasons — the advanced Exchange, compliance or Teams features — in which case Enterprise is effectively bundled in at no extra Windows-specific cost.
- You’re managing a genuinely large, centrally-controlled estate — Microsoft’s own FastTrack threshold of 150 seats is a reasonable rule of thumb for where this starts to make commercial sense.
- You’re in a regulated sector where Defender for Endpoint, advanced deployment control or Universal Print solve a real compliance or IT-operations problem, not a nice-to-have.
- You already run Intune and Azure AD at scale and have the IT resource to make Autopatch and centralised policy actually pay off.
If none of that describes your business, Pro already includes BitLocker, Hyper-V, Remote Desktop hosting and the Group Policy Editor — the features an SME is most likely to actually use — at a fraction of the cost, owned outright.
Frequently asked questions
No. Microsoft sells Windows 11 Enterprise only as a per-user subscription, as part of Microsoft 365 Enterprise or a standalone Windows Enterprise E3/E5 plan, both “Contact Sales” only. There is no key, no box and no one-time purchase option.
No. All three are included in standard Windows 11 Pro. Enterprise adds IT-management and security tooling on top of Pro — it doesn’t unlock these features, because Pro already has them.
Standard Enterprise follows the normal Windows 11 feature-update cycle. Enterprise LTSC is a separate, long-term servicing channel aimed at fixed-function devices — kiosks, medical equipment, industrial systems — that need years without feature changes. It’s not a general-purpose office edition and isn’t relevant to the SME comparison in this article.
Yes. Because Enterprise is a licensing upgrade on top of Pro rather than a separate install, moving from Pro to Enterprise is a licensing change, not a reinstall — you’re not locked into today’s decision.
It adds more security tooling — advanced threat protection, and Defender for Endpoint on the E5 plan — but Pro already includes BitLocker, Windows Defender Antivirus and the same core hardware-backed security as every Windows 11 edition. Enterprise is about managing security centrally across many devices, not a fundamentally different security baseline on any one device.
Microsoft doesn’t publish a standalone price. In practice it comes bundled into Microsoft 365 E3 or E5, which UK resellers currently quote at roughly £29.00 and £47.10 per user, per month respectively, excluding VAT. For most small businesses that’s a recurring cost many times higher than a one-time £38 Windows 11 Pro key.
Gary Walsh is the Head of Tech Support at Software Supplies, with more than 20 years in the IT industry. Fully Microsoft-certified and experienced across the full business software stack — from Windows and Office to cloud infrastructure and device management — Gary delivers practical, no-nonsense advice that helps users and businesses get the most from their technology.
