On October 14, 2025, Microsoft will stop delivering security updates, bug fixes, and technical support for Windows 10 version 22H2 and the perpetual-license editions of Office 2016 and Office 2019—including Visio and Project—all on the same day. Windows 10 users get a narrow lifeline in the form of Extended Security Updates (ESU), but the Office apps get no such reprieve. For anyone relying on those Office versions, the clock is ticking; you either migrate or accept mounting risk.

The Hard Deadline: What Actually Ends on October 14

The last Patch Tuesday for these products is October 14, 2025. After that:

  • Windows 10 22H2 stops receiving monthly security and quality updates for all editions (Home, Pro, Enterprise, Education).
  • Office 2016, Office 2019, Visio 2016/2019, and Project 2016/2019 stop receiving any security updates, product fixes, or assisted support from Microsoft.
  • Microsoft will not provide an Extended Security Update program for any of those Office perpetual releases—a point confirmed in the company’s MC1154299 advisory on September 16, 2025, and reported by BornCity.

Windows 10 itself gets a special carve-out: a paid ESU option for consumers and businesses, but it covers only the operating system, not the Office applications running on it. That means even if you enroll your PC in ESU and keep Windows 10 patched through October 2026 (or 2028 for enterprises), your installed copy of Office 2016 or 2019 remains unmaintained—a vulnerability bomb ticking away as new exploits surface.

What It Means for You: Security Risks and Hard Choices

The immediate concern is security. Unpatched Office vulnerabilities are a favorite attack vector—think weaponized Word docs, Excel macros, or Outlook parsing flaws. Without fixes, your desktop becomes an easier target.

For home users, the risk may feel abstract, but it translates into real threats: ransomware, credential theft, and silent data exfiltration. Simply opening an infected document could compromise your machine, even if Windows itself is up to date.

For small businesses and enterprises, the stakes are higher. Compliance frameworks (HIPAA, PCI-DSS, ISO 27001) often require actively supported software. Running unsupported Office can trigger audit findings, void cyber insurance, and complicate client contracts. Beyond compliance, line-of-business apps that depend on Access databases, custom VBA macros, or legacy COM add-ins may break over time as integrations with modern cloud services drift.

Administrators face a double challenge: they must orchestrate upgrades for both the OS and the productivity suite, often on aging hardware that may not meet Windows 11’s strict requirements. If hardware is ineligible, the only OS path is Windows 10 ESU—which buys time but doesn’t solve the Office problem.

How We Got Here: Lifecycle Policies for Windows and Office

Microsoft first published the October 14 end-of-support date for Windows 10 22H2 in 2021, aligning it with the company’s Modern Lifecycle Policy. Office 2016 and 2019 fall under the Fixed Lifecycle Policy, which assigned them a 10-year support window (5 years mainstream + 5 years extended). Both suites shipped in the fall of 2016 and 2019, respectively, and their extended support terminates on the same October 2025 date.

The rationale is straightforward: Microsoft wants to focus engineering on Windows 11, Microsoft 365 Apps, and the newer Office LTSC 2024. Maintaining older code branches ties up resources and slows down the security and feature innovations possible on unified platforms. The coordinated sunset also nudges customers toward subscription models, which provide predictable revenue and continuous updates.

While Windows 10’s ESU program emerged from enterprise demand (and thousands of organizations still migrating), Microsoft never intended to offer a similar bridge for perpetually licensed Office. The company’s communication has been consistent: Office 2016 and 2019 are end-of-life, and the only supported paths are Microsoft 365 Apps (cloud-attached) or Office LTSC 2024 (volume-licensed, feature-frozen).

Your Survival Plan: Concrete Steps to Take Before October 14

First, audit your environment

Identify every device running Windows 10 22H2 and every copy of Office 2016 or 2019. Check hardware eligibility for Windows 11 using the PC Health Check tool or manual specs (TPM 2.0, Secure Boot, 8th-gen Intel or Ryzen 2000 and newer). Map out any critical macros, Access databases, or third-party add-ins that rely on Office.

If your PC can run Windows 11

Upgrade the OS first. You can do so via Windows Update or the Installation Assistant. Then immediately address Office. You have two supported options:

  • Microsoft 365 Apps: Buy a Microsoft 365 subscription (Personal, Family, or Business plan) and install the always-updated desktop apps. This requires internet connectivity for activation and periodic license checks, and it receives new features on a monthly cadence. It’s the simplest, most secure path.
  • Office LTSC 2024: Available only through volume licensing, this is a fixed perpetual suite with five years of mainstream support. It won’t get feature updates, making it ideal for locked-down environments—manufacturing floors, lab instruments, air-gapped systems—where change management is rigid. Test carefully, because it uses a different update mechanism than consumer builds.

If your PC cannot run Windows 11 and you need temporary OS patches

Enroll in the Windows 10 Consumer ESU program before October 14. Enrollment options:

  • Free enrollment by syncing your Windows Backup settings to a Microsoft account.
  • Redeem 1,000 Microsoft Rewards points.
  • Purchase a one-year ESU for $30 USD (or local equivalent) per account.

The ESU covers Critical and Important security updates only, per Microsoft’s documentation. It does not include feature updates, driver updates, or support for Office. The ESU enrollment wizard appears in Settings → Windows Update on Windows 10 22H2 devices; you must be signed in with a Microsoft account. Commercial customers can purchase ESU through volume licensing or Cloud Solution Providers at $61 per device for year one, with prices doubling each successive year.

Migrate Office regardless of OS choice

Because there is no Office ESU, you must move off Office 2016/2019 by October 14 to remain supported. Your Office migration options are the same as above: Microsoft 365 Apps or Office LTSC 2024. Even if you enroll in Windows 10 ESU, the Office migration cannot wait. Start testing now:

  • Open mission-critical spreadsheets, databases, and Word documents in the target Office version.
  • Test macros and VBA; some legacy API calls may behave differently.
  • Verify add-in compatibility—many third-party vendors have updated installers for modern Office.
  • If Access databases are deeply embedded, plan a staged transition: you can keep the backend data in Access while front-ending with Microsoft 365 Access runtime, or migrate to SQL Server / Azure SQL for a more scalable solution.

For hardened users who can’t immediately migrate

If a full Office migration isn’t feasible by October, you are taking on risk. Apply compensating controls:

  • Isolate Office 2016/2019 machines on a restricted VLAN, blocking direct internet access and limiting file exchange to trusted sources.
  • Deploy robust endpoint detection and response (EDR) software, enable attack surface reduction rules, and restrict macro execution.
  • Consider third-party micropatching services such as 0patch, which provide in-memory fixes for critical vulnerabilities. Note that these are unofficial, and they are not a substitute for a supported product.
  • Explicitly document and accept the risk in your governance framework, and set a firm timeline for full migration.

Outlook: What to Watch After the Deadline

Once October 14 passes, the security landscape for unsupported Office will evolve quickly. Expect researchers to discover new vulnerabilities that will never be patched officially. Threat actors may stockpile exploits for use long after the deadline. The Windows 10 ESU trickle of updates will protect the OS, but Office will become an increasingly attractive soft spot.

Microsoft is unlikely to extend any grace period or offer a last-minute ESU for Office. The company’s focus is on Windows 11, Copilot integrations, and Microsoft 365. Some enterprises may hold out hope for a temporary extension, but history suggests that Microsoft’s lifecycle dates are firm; when they do make exceptions (as with Windows 10 ESU), they are announced well in advance.

On the Windows side, the one-year consumer ESU buys a bit more time, but it ends October 13, 2026. After that, Windows 10 machines without an upgrade path become truly obsolete. Hardware refresh cycles and Windows 11 adoption will accelerate through 2025 and 2026. For those still on Office 2016/2019, the message is unambiguous: start your migration now, test thoroughly, and treat the October 14 date as a hard cutover. The cost of waiting is measured in the increasing probability of a breach.