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Windows 10 KB5040427 update released with Copilot changes, 12 other fixes

ID: 9c48c365-dbde-5c22-8520-4ad4088e952f

STIX ID: report--9c48c365-dbde-5c22-8520-4ad4088e952f

Feed Name: Bleeping Computer

Threat Score
10/100

Date Published: 2024-07-09

Date Updated: 2026-04-20

Author: Lawrence Abrams

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Microsoft released the KB5040427 cumulative update for Windows 10 (21H2 and 22H2) which updates builds to 19044.4651 / 19045.4651, installs security updates addressing 142 vulnerabilities (including a RADIUS MD5-collision-related fix), and introduces UI/behavior changes to Copilot and Windows Installer/UAC; the update is mandatory and can be installed via Windows Update or the Microsoft Update Catalog. The bulletin lists 13 notable fixes, rollout details for Copilot, and two persistent known issues (Connected Cache node discovery with DHCP Option 235 and 0x80070520 profile picture errors).

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