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.
Windows 10 Security Updates end October 14, 2025
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Tue13Oct2026
Microsoft Office 2021 leaves extended support.
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Tue13Oct2026
The annual feature edition of Windows 11 known as 24H2, for 2024 second half, will reach the end of supports and patches October 13, 2026.