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.

Security updates for Microsoft Office 2021 end October 13, 2026.

Event Information:

  • Fri
    01
    Mar
    2019

    Windows 10 version 1709 End of Extended Support

    Windows 10, version 1709, is also known as Build 16299, and was the "Fall Creators Update" to Windows 10. After Extended support ends, there will be no more security patches to this version of Windows.