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.
  • Tue
    12
    Jan
    2027

    Windows Server 2016 End of Extended Support

    Applies to most editions of Microsoft Server 2016.

    End of extended support refers to the date when Microsoft no longer provides automatic fixes, updates, or online technical assistance. Without Microsoft support, you will no longer receive security updates that can help protect your PC from harmful viruses, spyware, and other malicious software that can steal your personal information.

  • Tue
    12
    Oct
    2027

    Windows 11, feature edition 25H2

    The annual feature edition of Windows 11 known as 25H2, for 2025 second half, will reach the end of supports and patches October 12, 2027.