Windows End of Support Calendar

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:

  • Tue
    10
    Oct
    2023

    Windows 11 21H2 (second half of 2021) End of Service

    Windows 11 21H2, released October 4th, 2021, reaches end of service on October 10th, 2023.