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Windows 10 end-of-support upgrade and ESU guidance

Advisory/Mitigation
First reported
Last updated
Happening score
H score 46
3 unique sources, 3 articles

Summary

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Microsoft ended Windows 10 support on October 14, 2025, leaving devices without new security updates and increasing the risk of viruses and malware if users stay on the platform. The company is directing users to upgrade to Windows 11, move to Windows 365, or enroll in the Extended Security Updates (ESU) program to keep protections in place. Microsoft also said some users can get ESU for free, including certain EEA customers who enroll with a Microsoft account.

Related Happenings

Windows 10 KB5094127 extended security update

Security Patch Release
H score10 First: 09.06.2026 21:35 Last: 09.06.2026 21:35 Sources 1

About this happening: Microsoft released **Windows 10 KB5094127** for **Windows 10 Enterprise LTSC** and **ESU-enrolled devices**, delivering the **June 2026 Patch Tuesday** security fixes and extendin...

Open Happening

Windows 11 cumulative updates KB5094126 and KB5093998 (June 2026 Patch Tuesday)

Security Patch Release
H score29 First: 09.06.2026 20:32 Last: 09.06.2026 20:32 Sources 1

About this happening: Microsoft released **Windows 11 KB5094126** and **KB5093998** mandatory cumulative updates to patch security vulnerabilities across **25H2/24H2** and **23H2** during **June 2026 P...

Open Happening

Microsoft Windows 11 KB5089549 cumulative update

Security Patch Release
H score19 First: 18.05.2026 11:33 Last: 18.05.2026 11:33 Sources 1

About this happening: Microsoft's **KB5089549** **Windows 11** security update is failing to install on some systems, forcing affected devices to roll back during reboot. The problem is tied to a nearl...

Open Happening

Microsoft Exchange CVE-2026-42897 mitigation advisory

Advisory/Mitigation
H score44 First: 15.05.2026 12:40 Last: 15.05.2026 12:40 Sources 1

About this happening: **Microsoft** issued immediate mitigation guidance for **CVE-2026-42897**, reducing risk for **Exchange Server 2016, 2019, and Subscription Edition (SE)** on-premises servers that...

Latest development: 15.05.2026 15:35

Microsoft issued temporary mitigation guidance for CVE-2026-42897 while a patch is still in development, recommending the Exchange Emergency Mitigation (EM) Service, which is enabled by default and can be checked with the Exchange Health Checker script, or the Exchange On-premises Mitigation Tool (EOMT) for disconnected or air-gapped environments. Microsoft noted that the mitigations can disrupt features such as OWA Print Calendar and Inline images, and that servers older than March 2023 cannot receive new mitigations through EM Service.

Open Happening

Microsoft May 2026 Patch Tuesday release

Security Patch Release
H score44 First: 13.05.2026 13:36 Last: 13.05.2026 13:36 Sources 1

About this happening: Microsoft's **May 13, 2026 Patch Tuesday** release fixed **138 vulnerabilities** across its product portfolio, including **Windows**, **Azure**, and **Edge**. None of the flaws we...

Latest development: 01.06.2026 15:30

Belgium's Centre for Cybersecurity warned that CVE-2026-41089 in Windows Netlogon is being actively exploited in the wild after Microsoft patched the stack-based buffer overflow during the May 2026 Patch Tuesday. The flaw affects all currently supported Windows Server versions, including Windows Server 2025, and can let an unauthenticated attacker gain remote code execution on targeted domain controllers.

Open Happening

Timeline

  1. 14.10.2025 17:54 2 articles · 8mo ago

    Windows 10 reaches end of support

    Initial Disclosure

    Windows 10 reached end of support on October 14, 2025, ending technical assistance, feature updates, and security updates for the operating system. PCs that remain on Windows 10 can continue to function, but they become more exposed to viruses, malware, and attacks without migration to a supported Windows version.

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  2. 14.10.2025 17:54 2 articles · 8mo ago

    Microsoft outlines ESU, EEA, and LTSC options for Windows 10 users

    Mitigation Patch Update

    Microsoft published guidance that directs Windows 10 users to upgrade to Windows 11, migrate to Windows 365, or enroll in the Extended Security Updates (ESU) program to keep receiving protection temporarily. The guidance says ESU costs $30 for home users and $61 per device per year for enterprise customers, can be extended for up to 3 years, can be free for some home users through Microsoft Rewards points or Windows Backup, and is free for individual customers in the European Economic Area who enroll with a Microsoft account after pressure from Euroconsumers. The same guidance also points to Long-Term Servicing Channel (LTSC) releases, including Windows 10 Enterprise LTSC 2021 and Windows 10 Enterprise LTSC 2019, as alternatives that keep receiving updates on their own schedules.

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