On one Patch Tuesday — October 13, 2026 — the final ESU year for Windows Server 2012 and 2012 R2 ends, Windows 10's first (and for consumers, only) ESU year expires, and Windows Server 2022 leaves mainstream support. What each clock means, the triage order, and the Exchange Server deadline 19 days behind it.
What's covered
- Key Dates at a Glance
- Windows Server 2012 and 2012 R2: the last patch, full stop
- Windows 10: the first ESU year runs out — for consumers, the only one
- Windows Server 2022 leaves mainstream — a calendar note, not an emergency
- Nineteen days later: the Exchange deadline
- Six weeks out: the triage order
Full guide with every version, risk scores, and live updates: https://endoflife.ai/article-october-13-2026
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