Windows 10 End of Life: The Complete 2026 Guide to Migrating Your SMB to Windows 11

Reviewed by IT Cares certified technicians · Updated August 2026

IT technician managing a Windows 11 migration on a business desktop in a modern navy-toned Canadian small business office
Windows 10 end of support isn't a one-day event for a business β€” it's an accumulating security gap that widens with every month a device stays unpatched.
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Windows 10 reached the end of its free support life on October 14, 2025, and if your business is reading this in 2026 still running it on machines that touch client data, email, or payment information, the operating system underneath your daily work is no longer receiving security patches. That doesn't mean the computers stopped working β€” they didn't, and won't. It means every new vulnerability discovered in Windows 10 from that date forward simply never gets fixed on an unenrolled device, and that gap only grows wider the longer a business waits to act.

This guide is built to answer the practical questions an SMB owner or IT manager actually has right now: what does end of support really change day to day, is your existing hardware even eligible for a free upgrade to Windows 11, what does Extended Security Updates (ESU) actually cost if you need to buy time, what does a full migration cost in real Canadian dollars, and what does a sane, staged migration plan look like for a business that can't afford downtime. It also includes three realistic Canadian SMB case studies, a downloadable-style migration checklist, and an honest comparison of your three real options so you can make the right call for each device in your fleet rather than one blanket decision for the whole business.

Who wrote this guide

This guide was written and reviewed by IT Cares certified technicians based on running real Windows 11 migrations for Canadian small and mid-size businesses since Windows 10's end-of-support date. We're not trying to scare anyone into buying new hardware they don't need β€” a meaningful share of devices we check pass the compatibility test and upgrade for free. The goal here is to give you the same decision framework we use with clients: check first, then decide, device by device.

What "End of Support" Actually Means for Your Business

Windows 10's end-of-support date wasn't a shutdown switch. Every existing Windows 10 machine kept working exactly as it did the day before, and will keep working for as long as the hardware physically survives. What actually changed is quieter and, for a business, more consequential: Microsoft stopped shipping free security patches, feature updates, and standard technical support for Windows 10 on unenrolled devices. Bugs and vulnerabilities discovered from that date forward simply don't get fixed unless a device is separately enrolled in Extended Security Updates.

That distinction matters because most businesses conflate "the computer still works" with "the computer is still safe to use for business data," and those are two entirely different claims. An unpatched operating system doesn't become dangerous all at once β€” it becomes gradually more exposed as security researchers and, more importantly, attackers discover new vulnerabilities that will never be fixed on that specific version. Ransomware groups and malware authors actively watch for exactly this kind of widening gap, because an unpatched, widely deployed operating system is a far more efficient target than actively maintained software. Our deep-dive on how ransomware actually works covers the attacker's side of this in detail; the short version for this guide is that an unpatched fleet is precisely the kind of low-effort, high-yield target ransomware operators look for first.

📊 IT Cares field note: The businesses we see get hurt by this aren't the ones who never heard end of support was coming β€” most owners had seen a notification at some point. It's the ones who assumed "we'll get to it eventually" was a safe holding position, right up until a cyber insurance renewal got denied over it, or a client's vendor security questionnaire flagged it, or β€” less often but more expensively β€” an unpatched machine became the entry point for an actual incident.

Beyond the direct security risk, end of support creates three secondary problems worth planning around. First, cyber insurers increasingly ask specifically about supported operating systems during underwriting and renewal, and an unsupported OS on business machines can affect premiums, coverage terms, or even claim eligibility if an incident traces back to it. Second, software vendors gradually stop supporting Windows 10 for their own applications β€” accounting software, industry-specific line-of-business tools, and security software itself will eventually drop compatibility, leaving you stuck between an unsupported OS and unsupported applications. Third, new business hardware β€” printers, scanners, peripherals β€” increasingly ships with drivers built and tested against Windows 11 first, with Windows 10 support either absent or an afterthought, which quietly limits what you can even buy going forward.

Want a straight answer on where your fleet actually stands?

IT Cares checks every device against the real Windows 11 requirements and gives you a device-by-device recommendation β€” no upsell to hardware you don't need.

Is Your Hardware Even Eligible? The Windows 11 Compatibility Requirements

Before deciding anything about budget or timeline, the first real question is simpler: does your existing hardware qualify for a free in-place upgrade at all? Windows 11 introduced a meaningfully stricter hardware baseline than any previous Windows version, and it's the single biggest reason some businesses end up needing new hardware rather than a straightforward upgrade.

The fastest way to check a single device is Microsoft's free PC Health Check app, which runs a compatibility scan and reports pass or fail with a specific reason if it fails β€” most commonly "this PC doesn't currently meet the Windows 11 requirements" pointing at TPM 2.0 or the CPU generation. For a business with more than a handful of devices, checking machines one at a time isn't practical; an IT provider can run a fleet-wide compatibility report through endpoint management tooling in a fraction of the time, which is usually the more efficient starting point once you're past a single-digit device count.

Before writing off a device, check the BIOS

A meaningful share of "incompatible" machines fail the check simply because TPM is present on the motherboard but disabled in the BIOS/UEFI settings by default β€” sometimes labelled "PTT" (Intel Platform Trust Technology) or "fTPM" (AMD). Enabling it and re-running the compatibility check costs nothing and occasionally turns a "needs replacement" device back into a free upgrade candidate. This is exactly the kind of check worth having an IT provider confirm before a purchase decision gets made on a device that might not have actually needed one.

Three Ways to Handle Windows 10 End of Life: An Honest Comparison

Once you know which devices pass the compatibility check, every device in your fleet effectively has three real paths forward. There's no single right answer for a whole business β€” the right mix depends on device age, budget timing, and how critical each machine is to daily operations.

Factor In-Place Upgrade New Hardware ESU (Extended Security Updates)
Upfront cost $0 in licensing if the device is already licensed and passes compatibility; labour/downtime only Roughly $650–$2,500+ CAD per device depending on desktop vs laptop and specs (see pricing section) Consumer: ~$30 USD one-time (or free with backup/Rewards points). Business/Volume Licensing: per-device annual fee, doubling each year
Requirements Device must pass TPM 2.0, Secure Boot, and CPU compatibility checks None — any new business PC ships Windows 11-ready Device stays on Windows 10; enrollment through a Microsoft account or Volume Licensing/CSP
Security coverage Full β€” same ongoing security update cycle as any current Windows 11 device Full β€” plus newer hardware-level security features unavailable on older machines Security patches only, no feature updates, and only for a limited, extendable period (up to 3 years for business ESU)
Timeline Hours per device once backed up and validated; fastest path for eligible machines Days to weeks depending on procurement, plus setup and data migration time Same day enrollment; buys planning time rather than solving the underlying issue
Best for Machines under roughly 4–5 years old that pass the compatibility check Machines that fail compatibility, or that are already near the end of their useful hardware life regardless of Windows 11 eligibility A small number of specialized or legacy-dependent machines that need more time before a permanent decision
Limitations Not available on incompatible hardware; some peripherals/drivers may need updating post-upgrade Highest upfront cost; requires data migration and app reinstallation planning Temporary and increasingly expensive each additional year; doesn't solve the underlying hardware gap

Read plainly, the table points toward the approach most Canadian SMBs land on in practice: run the compatibility check across the whole fleet first, upgrade every device that passes for free, replace the devices that clearly fail or are already near end of life, and reserve ESU for the small handful of edge cases β€” a specialized piece of equipment tied to legacy software, or a device replacement that's already budgeted for next quarter and doesn't need to happen today. Very few businesses end up choosing just one path for every machine.

What Migration Actually Costs in Canada (2026 Pricing)

Cost is usually the question that stalls a decision the longest, so here are honest, directional Canadian ranges for each path rather than a vague "it depends." Actual cost depends on fleet size, device mix, and whether you handle the work internally or bring in an IT provider.

Two things are worth flagging specifically because they catch businesses off guard: first, ESU gets more expensive every year you stay on it by design β€” it's built as a bridge, not a long-term alternative to actually migrating, and treating it as a permanent solution usually costs more within three years than simply replacing the hardware would have. Second, the real migration cost for most businesses isn't the Windows license or even the hardware β€” it's the labour of backing up, validating line-of-business software, and testing peripherals across the fleet, which is exactly the work worth budgeting time for regardless of which path you choose per device.

Want an actual number for your business, not a range?

IT Cares' managed IT services include Windows 11 migration planning scoped to your real fleet β€” no guesswork on which devices qualify. If security posture during and after the migration is the bigger concern, our cybersecurity services and IT security audit checklist cover what to verify once your fleet is fully on Windows 11.

The Step-by-Step Migration Plan for a Small Business

A rushed, all-at-once migration is the most common cause of post-migration problems β€” a printer that stops working, a line-of-business app that behaves differently, or a staff member locked out of a file they need mid-workday. The sequence below is the same one IT Cares runs for client fleets, built to catch problems on a small scale before they become a full-business disruption.

1

Build a Complete Device & Software Inventory

List every Windows 10 device in the business β€” including any remote or hybrid staff machines that might get overlooked β€” along with its age, specs, and every application and peripheral it depends on. You can't plan a migration around devices and dependencies nobody has written down, and this step consistently surfaces machines nobody remembered were still in active use.

2

Run a Compatibility Check Across the Whole Fleet

Check every device against the real Windows 11 requirements β€” TPM 2.0, Secure Boot, supported CPU β€” using the PC Health Check app individually or a fleet management tool for a bulk report. Sort the results into three buckets: upgrade-eligible, replacement-needed, and edge cases that might need a closer look (like BIOS-disabled TPM).

3

Back Up Everything Before Touching Anything

Confirm a verified, restorable backup exists for every device and its data before any upgrade or hardware swap begins. Our full guide to business cloud backup covers this in depth β€” the migration-specific point is that "we have a backup" and "we have confirmed this backup actually restores" are different claims, and a migration is exactly the kind of change where you want the stronger of the two.

4

Decide Your Mix, Device by Device

For each device, choose in-place upgrade, hardware replacement, or temporary ESU coverage based on its compatibility results, age, and role in the business. Resist the instinct to apply one decision to the whole fleet β€” a five-year-old reception desktop and a two-year-old accountant's laptop rarely belong in the same bucket.

5

Pilot With a Small Group First

Migrate a handful of devices β€” ideally covering your most-used line-of-business software and any specialized peripherals β€” before touching the rest of the fleet. A pilot group of 2-4 machines is usually enough to surface most real-world issues without risking a full-business disruption if something unexpected comes up.

6

Validate Line-of-Business Apps & Peripherals

Confirm every critical application, printer, scanner, and specialized device still works correctly on Windows 11 during the pilot. Compatibility gaps here β€” an older printer driver, a legacy accounting package, a specialized scanner β€” are the single most common source of migration delays, and catching them on 2-4 pilot machines is dramatically cheaper than discovering them mid-rollout.

7

Roll Out in Stages by Department

Once the pilot is clean, migrate the rest of the business in planned waves β€” by department, location, or shift β€” rather than all at once. Keep a rollback plan ready for each wave, and schedule waves around each team's actual workload rather than defaulting to "whenever IT gets to it."

8

Train Staff & Retire Old Hardware Securely

Give staff a short walkthrough of what visibly changed in Windows 11 β€” the Start menu layout and a handful of relocated settings are the most common points of confusion, and a 15-minute team walkthrough headed off most support tickets we see post-migration. For any replaced hardware, securely wipe the drive rather than relying on a normal file deletion, then donate, resell, or recycle through certified electronics recycling β€” our computer recycling service handles secure data destruction and responsible disposal for retired business hardware.

The Downloadable Migration Checklist: Print This or Save It

Below is the condensed, actionable version of the plan above β€” meant to be printed, saved as a PDF, or copied into your own tracking document and worked through device by device.

Windows 10 → 11 Migration Checklist β€” 2026

Inventory & Assessment

☐ Complete list of every Windows 10 device exists and is current

☐ Every device has been run through the PC Health Check (or fleet-wide equivalent)

☐ BIOS/UEFI checked for disabled TPM before writing off a "failed" device

Backup & Data Protection

☐ A verified, restorable backup exists for every device before migration begins

☐ Critical business files confirmed accessible from the backup, not just "backed up"

Decision & Planning

☐ Each device assigned a path: upgrade, replace, or temporary ESU

☐ Budget confirmed for hardware replacements and/or ESU enrollment

☐ Migration timeline set with a pilot phase before full rollout

Pilot & Validation

☐ 2-4 pilot devices migrated covering key line-of-business software

☐ All critical printers, scanners, and peripherals tested on Windows 11

☐ No pilot-phase issues left unresolved before full rollout begins

Rollout & Wrap-Up

☐ Staged rollout completed by department or location

☐ Staff given a short walkthrough of Windows 11 changes

☐ Retired hardware securely wiped and disposed of or recycled responsibly

Real Canadian SMB Examples: How This Plays Out in Practice

These three examples are composite, illustrative case studies based on the kinds of migrations and outcomes that are common across Canadian SMBs since Windows 10's end-of-support date β€” not accounts of specific named clients. They're included because the real numbers make the decision concrete in a way generic advice doesn't.

Case study 1: Bellwood Insurance Brokers, Kitchener, ON β€” 18 employees

Bellwood ran 22 Windows 10 devices across its office, most purchased in two batches roughly three and six years earlier. A fleet compatibility check found 14 devices passed the Windows 11 requirements outright, 3 more passed once TPM was enabled in the BIOS, and 5 older desktops in the back office failed on CPU generation. The 17 eligible machines were upgraded in place over a single weekend at $99.99 CAD per device for a managed upgrade (backup, upgrade, verification), totaling $1,699.83 CAD. The 5 incompatible machines were replaced with entry-level business desktops at roughly $780 CAD each plus $129.99 CAD in migration setup, totaling about $4,550 CAD. Total project cost: just under $6,250 CAD for the full 22-device fleet, completed over three weeks including a one-week pilot.

Case study 2: Fraser Valley Dental Supply, Abbotsford, BC β€” 34 employees

Fraser Valley's warehouse ran several older Windows 10 PCs tied to a specialized inventory-scanning application whose vendor hadn't yet confirmed Windows 11 compatibility at the time of planning. Rather than force a risky upgrade on business-critical warehouse machines, the company enrolled 6 of those specific devices in business ESU as a bridge while the software vendor finished testing, at an estimated $510 CAD for year-one coverage across the group, while the remaining 28 office and management devices β€” all compatible β€” were upgraded in place over the same month for roughly $2,800 CAD combined. The ESU purchase bought Fraser Valley a confirmed 12-month runway to migrate the warehouse machines properly once vendor compatibility was verified, rather than either risking a broken inventory system or leaving those machines unpatched with no plan.

Case study 3: Rideau Bookkeeping Collective, Ottawa, ON β€” 9 employees

As a micro business with a tight annual technology budget, Rideau needed to stage its migration across two fiscal quarters rather than all at once. A compatibility check on its 9 devices found 6 eligible for a free upgrade and 3 aging laptops that failed. Rideau upgraded the 6 eligible machines immediately at minimal cost, replaced 1 of the 3 failed laptops that quarter (roughly $1,050 CAD for a business laptop plus setup), and used consumer ESU (the free Windows Backup enrollment path, at no direct cost) to cover the remaining 2 laptops for one additional year while budgeting their replacement into the following fiscal quarter. The phased approach let a 9-person business fully close its Windows 10 security gap without a single large unplanned expense hitting one budget cycle.

What these three cases have in common

None of them treated the fleet as one all-or-nothing decision. Each business ran the compatibility check first, then matched the path β€” upgrade, replace, or temporary ESU β€” to what each specific device and its role actually needed. That's the pattern worth copying: check before you budget, and expect your fleet to end up with a mix of outcomes rather than a single uniform answer.

Budgeting the Migration: Making the Case to Leadership

For IT managers, the technical plan is rarely the hard part of this project β€” getting budget approved from ownership or leadership usually is, especially for a project that doesn't visibly change anything if it goes well. A few framings consistently help move the conversation.

Frame the cost of inaction in real dollars, not abstract risk. Compare the migration budget β€” typically a few thousand dollars for a small fleet β€” against the realistic cost of even a moderate security incident tracing back to an unpatched device: incident response, potential downtime, client notification, and reputational impact regularly runs into five or six figures even for a small business. Our guide to setting a realistic cybersecurity budget per employee gives a useful reference point for sizing this conversation against your overall IT spend.

Tie it to something leadership already tracks. A cyber insurance renewal, a client vendor-security questionnaire, or an upcoming compliance deadline are all levers that make budget approval move faster than presenting the migration as a purely internal IT initiative nobody outside IT will ever notice happened.

Phase the spend across fiscal periods if the full fleet feels like too much at once, the way Rideau Bookkeeping did above β€” upgrade what's free and eligible immediately, replace the most business-critical incompatible devices this quarter, and use ESU as a deliberate, budgeted bridge for the rest rather than an accidental default because nobody made a decision.

If ongoing hardware refresh planning matters more than treating this as a one-time scramble, bundling regular device lifecycle review into a managed IT services agreement means the next OS transition β€” whenever it comes β€” never catches the business by surprise the way this one may have.

Frequently Asked Questions

When did Windows 10 support actually end?
Microsoft ended free mainstream support for Windows 10 on October 14, 2025. Since that date, Windows 10 no longer receives free security patches, feature updates, or standard technical support, except for devices enrolled in the Extended Security Updates (ESU) program, which extends security-only patching for a limited, paid additional period.
What actually happens if I keep using Windows 10 after end of support?
The computer keeps working exactly as before, but it stops receiving security patches for any newly discovered vulnerabilities. Over time, this means known, unpatched security holes accumulate and are never fixed, making the device an increasingly attractive and easy target for malware and ransomware. Many cyber insurers, software vendors, and compliance frameworks also treat an unsupported operating system as a documented risk, which can affect insurance renewal, vendor support eligibility, and audit findings even before any actual security incident occurs.
How do I know if my computer can run Windows 11?
Download and run Microsoft's free PC Health Check app, which checks your specific device against the Windows 11 requirements and tells you pass or fail in under a minute. The core requirements are a TPM 2.0 security chip, UEFI firmware with Secure Boot capability, a supported CPU (generally 8th-generation Intel Core or newer, or AMD Zen 2 or newer), at least 4GB of RAM (8GB recommended for real business use), and 64GB or more of storage. For a fleet of business devices, an IT provider can run this check across every machine at once rather than one at a time.
What is Extended Security Updates (ESU) and how much does it cost?
ESU is Microsoft's paid program that extends security-only patching for Windows 10 devices beyond the October 2025 end-of-support date, without adding new features or full technical support. For businesses enrolling through Volume Licensing or a Cloud Solution Provider, Microsoft's published pricing structure charges per device per year and doubles each year the device stays enrolled, with coverage available for up to three additional years. Consumer ESU enrollment is available through a Microsoft account for a smaller one-time fee, free with a Windows Backup enrollment, or free using Microsoft Rewards points, and covers one additional year. Because Microsoft has adjusted ESU terms before, confirm current pricing and eligibility directly with Microsoft or your IT provider before budgeting a firm number.
Is upgrading from Windows 10 to Windows 11 free?
Yes. If a device already runs a licensed copy of Windows 10 and meets the Windows 11 hardware requirements, the in-place upgrade itself costs nothing in licensing fees. The real cost in a business setting is usually the labour and downtime involved in backing up, testing, and validating that line-of-business software and peripherals still work correctly after the upgrade, not the Windows 11 license itself.
Should my business buy new computers or just upgrade the ones we have?
It depends on the device. If a computer passes the Windows 11 compatibility check and is under roughly four to five years old, an in-place upgrade is almost always the more cost-effective choice. If a device fails the compatibility check (most commonly due to a missing TPM 2.0 chip or an unsupported CPU) or is already near the end of its useful hardware life, replacing it is usually more sensible than trying to work around a hard compatibility wall. Most small businesses end up with a mixed fleet: some devices upgraded in place, others replaced, decided machine by machine rather than as one blanket decision.
How long does a Windows 11 migration take for a small business?
For a small business with 10-30 devices, a well-planned migration typically takes two to four weeks from inventory through full rollout, including a pilot phase and staged deployment. Larger fleets or businesses with more complex line-of-business software can take six to eight weeks. Rushing the process to save time is the most common cause of post-migration problems, since skipping the pilot phase or app validation step is exactly what tends to surface issues during a full rollout instead of catching them early on a handful of machines.
What should we do with our old Windows 10 computers after migrating?
Any device being retired should have its data securely and permanently wiped before leaving the business, not just deleted through a normal file removal, since business data can often still be recovered from a drive that was simply emptied through the recycle bin. From there, devices in reasonable condition can be donated, resold, or repurposed for lighter tasks that don't require Windows 11, while devices at the end of their useful life should go through certified electronics recycling rather than sitting in a storage closet holding onto old business data indefinitely.

Ready to Find Out Exactly Where Your Fleet Stands?

IT Cares checks every device against the real Windows 11 requirements and hands you a device-by-device migration plan β€” upgrade, replace, or bridge with ESU, whichever actually makes sense for each machine.

Comments (3)

JT
Jordan T., Kitchener
August 1, 2026

Ran the PC Health Check across our 15-machine office expecting to replace half of them. Turned out 4 just had TPM disabled in the BIOS. Saved us a few thousand dollars we'd already started budgeting for new hardware.

NP
Nadia P., Abbotsford
July 30, 2026

The ESU-as-a-bridge idea for our one legacy scanning app was exactly what we needed. Didn't want to force an upgrade before the vendor confirmed compatibility, and this let us patch security without touching the app.

RC
Remy C., Ottawa
July 28, 2026

The comparison table made it easy to explain to our owner why we weren't replacing every single machine. Phased it exactly like the Rideau example β€” free upgrades now, one replacement this quarter, ESU on the rest until next budget cycle.

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