Windows 10 EOL 2026: The Billion-PC Refresh, By The Numbers

Windows 10 End of Life: Where UK Fleets Stand in July 2026

Windows 10 officially reached end of support on October 14, 2025, ending free security updates, feature updates and standard technical assistance for the OS that still ran a large share of the world's desktops. Nine months into the aftermath, the market response has been unambiguous: global PC shipments rose 3.2% year-over-year in Q1 2026 to 64.8 million units, a jump Omdia attributes directly to the Windows 10 replacement cycle and to buyers moving early ahead of expected component cost increases.

That refresh wave has reshaped the desktop landscape faster than the last OS transition. By February 2026, StatCounter data put Windows 11's global desktop share at roughly 72.57%, with Windows 10 down to 26.45% — a flip that would have seemed unthinkable twelve months earlier. Windows 11 also passed one billion active devices worldwide by January 2026, hitting that milestone 130 days faster than Windows 10 managed after its own launch.

Two Deadlines, Two Audiences: Consumer ESU to 2027, Business ESU to 2028

The single biggest source of confusion in the current coverage is that there are two separate ESU clocks running, for two different audiences, and conflating them leads buyers to the wrong decision. For individual consumers, Microsoft quietly extended the Windows 10 Extended Security Updates programme to October 12, 2027 — a full year later than the October 2026 cutoff originally communicated.

For commercial environments, the picture is entirely different and runs a year longer again: the business ESU programme is structured as three paid annual tiers stretching through to October 2028. These are not interchangeable programmes with a shared enrolment path — a household PC and a company-owned laptop on the same Windows 10 build are on different tracks with different costs and different final dates, and IT teams auditing an estate need to check device ownership and enrolment status individually rather than assuming a single blanket deadline applies.

The Real Price of Business ESU: Cumulative Cost, Not Flat Cost

Commercial ESU pricing is tiered and cumulative, and the cumulative structure matters more than the headline per-device figure. Year 1 (October 2025 to October 2026) is priced at $61 per device. Year 2 (October 2026 to October 2027) doubles to $122 per device. Year 3 (October 2027 to October 2028) doubles again to $244 per device.

Crucially, organisations cannot simply join at Year 2 or Year 3 pricing to save money — ESU must be purchased sequentially, and delaying enrolment to Year 2 requires retroactive payment for Year 1 as well. For a fleet of any size this makes late enrolment materially more expensive per device than budgeting for it up front, which is exactly the kind of unplanned line item worth stress-testing through an IT finance calculator before committing to another 12 months on unsupported hardware.

• •Year 1 (Oct 2025–Oct 2026): $61 per device
• •Year 2 (Oct 2026–Oct 2027): $122 per device
• •Year 3 (Oct 2027–Oct 2028): $244 per device
• •Enrolment is sequential — skipping a year still requires backdated payment

The Hardware Refresh Collides With a Memory Price Shock

The timing of this refresh cycle could hardly be worse for buyers. Conventional DRAM contract prices surged 90-95% quarter-over-quarter in Q1 2026, with TrendForce projecting a further 58-63% rise in Q2 2026. NAND flash contract prices climbed 55-60% in Q1 2026 and were forecast to jump 70-75% in Q2 — overtaking DRAM's rate of increase for the first time in the current cycle.

TrendForce attributes the surge chiefly to AI server demand pulling memory capacity away from PC and smartphone components, and warns that meaningful new fab capacity is unlikely before late 2027 or 2028. Omdia notes that PC OEMs are already facing margin compression and are passing these cost increases on to channel partners and end-customers. For UK organisations planning a hardware refresh, this is a strong argument for locking in configurations now via a server configuration review or a like-for-like comparison across the Dell, HPE and Lenovo configurators, rather than waiting for prices to settle.

UK Businesses: Compliance Risk and the Refurbished Alternative

Running unsupported Windows 10 devices past their coverage window carries more than a theoretical risk. Impact Networking's analysis of the EOL transition points to significantly increased cybersecurity exposure, heightened compliance risk, and growing software incompatibility as vendors stop testing against an unpatched OS — all relevant considerations for UK organisations weighing data protection obligations against the cost of a refresh or ESU enrolment.

Set against rising new-hardware prices, the UK refurbished PC market has become the pragmatic release valve. Sales volumes almost doubled between Q4 2024 and Q4 2025, with the UK overtaking Germany in European refurbished market share during the second half of 2025. A new mid-range desktop typically runs £600-£900, against roughly £180-£350 for a certified refurbished equivalent — a gap wide enough to change the maths for households and small businesses alike. The EU's Right to Repair directive, taking full effect in July 2026, is expected to further legitimise second-life devices by improving parts availability, reinforcing a trend UK buyers can already explore through refurbished servers and equivalent desktop channels, alongside the wider licensing shift covered in our VMware alternatives analysis for organisations rethinking their whole stack at once.

Making Your Move: A Decision Framework for UK Windows 10 Users

The right path depends heavily on who is holding the device and what budget cycle they sit inside. A home user with an ageing PC that cannot upgrade to Windows 11 has a genuine breathing space through the extended consumer ESU window to October 2027, but that date is a bridge, not a destination — the underlying hardware still needs replacing eventually, and refurbished stock now offers a materially cheaper way to do that than new.

An SMB running fifty-plus Windows 10 devices faces a sharper calculation: commercial ESU costs scale from $61 to $244 per device across three years and must be paid sequentially, which means the true multi-year cost needs modelling against a straight refresh to Windows 11 hardware — particularly given that DRAM and NAND prices are still climbing through 2026. Auditing the estate first is the single highest-leverage step; teams unsure where each device sits can run it through a server end-of-life checker-style audit process, model the numbers, and then talk to a Servnet engineer about sequencing a refresh before component costs climb further.

Methodology

This study compiles figures published between October 2025 and June 2026 from a mix of vendor communications, market research houses and specialist technology press: Microsoft's own end-of-life notices, Omdia and Counterpoint/Gartner PC shipment tracking (via TechPowerUp), TrendForce memory-market pricing data (via Tom's Hardware), StatCounter desktop OS share data (via TweakTown), and reporting from ZDNET, TechTimes, Managed Solution and Impact Networking on ESU pricing and enrolment mechanics.

Every figure in this piece retains the exact scope, time period and source stated in the originating report — for example, DRAM and NAND figures are contract prices for memory components, not retail SSD or RAM module prices, and PC shipment estimates are Omdia's specific Q1 2026 figures rather than a blended industry average, since different research firms (Gartner, Counterpoint, IDC) reported slightly different Q1 2026 totals. Where sources disagreed or measured different things, figures were kept separate rather than merged, and no percentages, averages or projections were calculated beyond what each named source explicitly published.

Sources

Every figure in this article traces to the sources below.

• •Microsoft — official Windows 10 end-of-life date
• •Managed Solution — commercial ESU pricing tiers and sequential enrolment rule
• •ZDNET — consumer ESU extension to October 2027
• •TweakTown (StatCounter) — Windows 11 vs Windows 10 desktop share, February 2026
• •TechTimes — Windows 11 passing one billion active devices
• •Omdia via TechPowerUp — Q1 2026 global PC shipment growth
• •TrendForce via Tom's Hardware — DRAM and NAND contract price surges
• •Impact Networking — risks of running unsupported Windows 10
• •eCommerceNews UK (CONTEXT) — UK refurbished PC market growth and Right to Repair directive
• •Refurb Laptops UK — UK refurbished desktop pricing context