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
Event Information:
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Tue13Dec2022
Windows 10 Version 21H1 End of Service
Windows 10, version 21H1, named for the release date of First Half of 2021, will reach end-of-life, on December 13, 2022, and will no longer receive security patches after that date.