Report
Microsoft ends Office LTSC 2021 security updates
Neowin says Microsoft recommends cloud plans or disconnected Office LTSC 2024 for air-gapped systems.
TLDR
Neowin reports that Microsoft dropped security updates for Office LTSC 2021 on October 13, 2026. It warns that unpatched installations face instant exposure to AI-crafted exploits and says Microsoft recommends cloud plans or disconnected Office LTSC 2024 for air-gapped systems.
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