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Windows 11 25H2
Trends
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Microsoft has started the general availability of Windows 11 2026 Update, version 26H2, on September 30. Users on 24H2 or 25H2 can move via an enablement patch (eKB), and 24H2 users can update directly since its support ends October 13. Discussion also covers recent bugs, including desktops not loading after sign-in in AVD environments and a File History backup failure from September updates.
- 2Microsoft sets end of life for Windows 11 24H2โMicrosoft officially announces Windows 11 24H2 EOL for Home and Pro editions. Learn why you must upgrade to 25H2 or 26H2
Microsoft has officially announced the end of life for Windows 11 version 24H2 for Home and Pro editions, meaning these versions will no longer receive security updates. Users are being urged to upgrade to version 25H2 or 26H2 to keep receiving critical security patches. Commenters in cybersecurity circles are warning that staying on 24H2 leaves machines exposed to unpatched vulnerabilities.
- 3New Windows vulnerability scores 7.0 on CVSS scaleโผ๐จ EUVD-2026-99173 ๐ Score: 7.0/10 (CVSS v3.1) ๐ฆ Product: Windows 11 Version 25H2, Windows Server 2025 (Server Core insta
A security flaw tracked as EUVD-2026-99173 has been catalogued in Microsoft's Windows 11 Version 25H2 and Windows Server 2025, including Server Core installations. The vulnerability is a use-after-free bug in the Windows Audio Service that allows an authorized attacker to potentially escalate privileges or execute code. It carries a CVSS v3.1 score of 7.0, placing it in the high-severity category.
- 4Microsoft patches Windows 11 audio service vulnerabilityโผ๐จ EUVD-2026-100401 ๐ Score: 7.8/10 (CVSS v3.1) ๐ฆ Product: Windows 11 Version 24H2, Windows 11 Version 25H2, Windows 11 v
A vulnerability tracked as EUVD-2026-100401 affects Windows 11 versions 24H2, 25H2 and 26H1. The flaw, with a CVSS score of 7.8, involves improper verification of a cryptographic signature in the Windows Audio Service, and could allow security bypasses. Microsoft, the affected vendor, updated the advisory on 13 October 2026. Windows users are advised to check for patches.
- 5Microsoft Windows Search flaw scores 9.8 on CVSSโ๐จ EUVD-2026-100399 ๐ Score: 9.8/10 (CVSS v3.1) ๐ฆ Product: Windows Server 2016 (Server Core installation), Windows 10 Ver
A critical vulnerability, EUVD-2026-100399, has been catalogued affecting Microsoft Windows, including Windows Server 2016 Server Core, Windows 10 Version 1809 and Windows 11 Version 25H2, among more than 15 other versions. The flaw is a use-after-free bug in the Windows Search component, rated 9.8 out of 10 on the CVSS v3.1 scale. The vulnerability was updated in the EU vulnerability database on 13 October 2026, and security teams are urged to patch affected systems.