Microsoft has set October 13, 2026, as the end-of-support date for Windows 11 SE, the locked-down education edition that shipped on low-cost laptops, and for Microsoft Publisher, the desktop publishing app that has lingered inside Office suites for decades. The dual announcement, quietly posted on Microsoft's lifecycle policy pages and in a Microsoft 365 blog, pushes both products out of active servicing in the same month, forcing schools, businesses, and IT teams to plan migrations now – or risk running vulnerable, unsupported software.

Windows 11 SE: The experiment that didn't graduate

Windows 11 SE debuted in late 2021 alongside the $249 Surface Laptop SE, a 11.6-inch clamshell aimed squarely at the K-12 education market. The operating system was Microsoft's answer to Chromebooks: a stripped-back, cloud-first Windows experience that only ran apps from the Microsoft Store or those approved by IT admins. It stripped away the clutter – no Start menu recommendations, no Teams personal integration, and the widgets panel was disabled by default. Crucially, it forced Microsoft Edge with Bing as the default search engine, with no way for users to change it.

The pitch: a familiar Windows desktop that district IT could lock down tightly, with app management through Intune and offline capabilities that Chromebooks couldn't match. But the reality fell short. Hardware partners like Acer, Asus, Dell, and HP shipped Windows 11 SE devices, yet sales never threatened Chromebook dominance. Microsoft stopped manufacturing the Surface Laptop SE in October 2023, and education customers increasingly shifted to Windows 11 Pro Education or simply stuck with Chromebooks.

Now, the official lifecycle policy confirms Windows 11 SE will receive its final security update on October 13, 2026. After that date, devices running the OS will be exposed to new vulnerabilities without patches. Microsoft offers no extended security updates (ESU) for this edition, unlike Windows 10. Schools that deployed these devices during the pandemic-era hardware rush will need to replace the OS or the hardware itself within the next two years.

Migration paths for Windows 11 SE devices

IT admins have three options:

  • Upgrade to Windows 11 Pro Education. Devices with compatible firmware and TPM 2.0 can be upgraded in-place using a provisioning package or Intune policy. This unlocks the full Windows desktop, removes the Edge lock-in, and follows the standard Windows 11 lifecycle – currently supported until at least October 2028 for version 23H2, with newer versions extending further. However, some budget SE laptops like the original Surface Laptop SE shipped with limited storage (64GB eMMC), which may struggle with a full upgrade and subsequent feature updates.

  • Switch to a Windows 11 Education license. This provides a middle ground with more controls for schools, including the ability to run Win32 apps managed by IT. The upgrade path is similar to Pro Education but may offer more favorable pricing through Microsoft's Volume Licensing programs.

  • Replace the hardware. For many schools, the simplest path may be to retire SE devices and move to newer laptops running Windows 11 Pro Education or to Chromebooks. This avoids the hassle of upgrading underpowered hardware, though it incurs capital costs.

Microsoft recommends that IT admins begin testing migrations now, as the 22-month window may seem long but can slip quickly when dealing with school-year purchasing cycles and summer deployment windows. The company has published documentation on exporting settings from Windows 11 SE to standard Windows 11 editions through Intune, which can streamline the transition.

Microsoft Publisher: The end of a 33-year run

In February 2024, Microsoft's 365 blog quietly announced that Publisher would no longer be included in Microsoft 365 subscriptions after October 2026. The desktop publishing program, first released in 1991, allowed users to create brochures, newsletters, flyers, and greeting cards without the complexity of professional design tools. It became a staple in small offices and schools, often bundled with Office suites.

But Publisher's user base has dwindled as web-based alternatives like Canva, Adobe Express, and even Microsoft's own Designer have offered simpler, collaborative, and often free design capabilities. Microsoft has not added significant features to Publisher in years, and it never made the leap to a cloud-first architecture. Office 2021 LTSC will be the last perpetual version to include Publisher, and it will follow the same October 2026 end-of-support deadline.

What happens after October 13, 2026?

After that date:

  • Publisher will no longer receive security patches, bug fixes, or technical support.
  • It will continue to function, but opening files from untrusted sources will pose a security risk.
  • Microsoft 365 business and education subscribers will lose access to the desktop Publisher app; it will no longer be part of the installation suite.
  • Office LTSC 2021 users can continue using Publisher, but without support.

Microsoft is not offering a successor app. Instead, the company directs users to four alternatives:

  • Microsoft Designer, its AI-powered graphic design tool, integrated into Edge and available at designer.microsoft.com. It can generate social media posts, flyers, and presentations from prompts.
  • Microsoft Word and PowerPoint, which include templates for brochures, newsletters, and flyers that can replicate basic Publisher layouts.
  • Adobe Express, a free web-based design tool with premium templates and AI capabilities, positioned as Canva's main rival.
  • Canva, the popular Australian design platform with a vast template library, team collaboration, and now integrated AI features.

For many sole proprietors and nonprofits that rely on Publisher for simple print materials, the transition may be smoother than expected. Designer, in particular, is already included in most Microsoft 365 subscriptions and can open a limited range of Publisher files.

Preparing for the migration: What IT pros must do now

IT departments need a concrete plan that covers both Windows 11 SE and Publisher simultaneously, as many school districts and small businesses may be affected by both retirements. Here's a timeline-driven checklist:

Q2 2025:

  • Inventory all Windows 11 SE devices and Publisher installations across the organization.
  • Determine which SE devices are hardware-capable of upgrading (TPM 2.0, 64GB+ storage, and sufficient RAM).
  • Identify critical business processes or templates that depend on Publisher files (.pub).
  • Begin trialing alternatives: set up test users on Designer, Canva, or Adobe Express for Publisher migration; test a few Windows 11 SE devices with Windows 11 Pro Education via Intune.

Q3 2025 – Q2 2026:

  • Convert Publisher templates to open formats (PDF, Word, or cloud-native formats) or rebuild them in the chosen alternative.
  • Run pilot upgrades on Windows 11 SE devices; validate app compatibility and user experience.
  • Purchase Windows 11 Pro Education or Education upgrade licenses if needed, or budget for hardware replacement.
  • Train staff on the new design tools and updated Windows environment.

Q3 2026:

  • Complete all Publisher file conversions; archive legacy .pub files for reference only.
  • Roll out OS upgrades to all SE devices, or retire and replace them.
  • Uninstall Publisher from all endpoints to avoid shadow IT use.
  • Confirm that endpoint security policies block outdated OS versions from accessing sensitive resources.

October 13, 2026:

  • Verify that zero devices remain on Windows 11 SE.
  • Ensure Publisher is removed from any remaining Office 2021 LTSC deployments that will no longer receive patches.

The bigger picture: Microsoft's shifting priorities

The dual phase-out fits a pattern. Microsoft is increasingly focused on cloud-based, AI-driven experiences across both Windows and Office. Windows 11 SE was a defensive move against Chromebooks that never gained traction; now, the company pushes Windows 11 Pro Education with broader software compatibility and Copilot+ features. On the Office side, the classic desktop publishing model is giving way to on-the-web design tools that leverage generative AI, real-time collaboration, and deep integration with stock photo libraries and social media platforms.

For IT admins, these transitions are unwelcome but manageable if started early. The real risk is procrastination. An unsupported OS in a school network is an easy entry point for ransomware. And a lingering Publisher file that someone double-clicks in 2027 could deliver a macro-based malware payload with no patch in sight.

The October 2026 deadline gives organizations two full years to plan. That's generous by Microsoft's recent standards, but the window will close faster than it appears. The best time to start the migration is now – before the next back-to-school rush or fiscal year-end scramble.