Microsoft Releases Extended Security Update KB5099539 for Windows 10
Photo: BleepingComputer
Quick answer
Microsoft has released the extended security update KB5099539 for Windows 10, patching 570 vulnerabilities and extending system support until July 2026.
Microsoft has released the extended security update KB5099539 for Windows 10. This release addresses 570 vulnerabilities patched during the July 2026 Patch Tuesday. In addition to core patches, the update includes extra measures to enhance system security and stability.
This update is part of the extended support program for Windows 10, extending the OS lifecycle until July 2026. It targets enterprise clients and organizations requiring additional time to transition to modern Windows versions like Windows 11. Without this update, Windows 10 users would lack critical security fixes.
Experts highlight that the KB5099539 update is particularly crucial for companies using outdated hardware or specialized software incompatible with Windows 11. Microsoft emphasizes that installing this patch is mandatory to ensure data and infrastructure security for businesses.
Common questions
- What does the KB5099539 update for Windows 10 include?
- The KB5099539 update includes patches for 570 vulnerabilities, along with additional security and stability fixes. It extends Windows 10 support until July 2026.
- Who is this update intended for?
- This update is aimed at enterprise clients and organizations needing extra time to migrate to modern Windows versions.
- Why does Microsoft continue to support Windows 10?
- The company extends support for users unable to transition to Windows 11 due to hardware limitations or specific business requirements.
Dzen feed: /feed/dzen.xml · RSS: /feed.xml