The End of Support Calendar shows Microsoft Operating Systems end of support dates, whether they are the end of mainstream support that updates features and cosmetic changes, or extended support, which ends security fixes and all Microsoft technical support other than old web pages.
Security updates for Microsoft Office 2021 end October 13, 2026.
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Tue09Jan2024
Applies to most editions of Microsoft Server 2019.
End of mainstream support refers to the date when Microsoft no longer provides feature updates and fixes.
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Tue08Oct2024
Microsoft inconsistently labels this version as Windows 11 2022 in marketing materials, but the Winver program, run from the Start button, identifies it as 22H2.
Windows 11 22H2, released September 20th, 2022, will reach end of service on October 8th, 2024.