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
  • Tue
    11
    Apr
    2017

    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
    09
    May
    2017

    Windows 10 version 1507 was the initial release for Windows 10, released July 29th, 2015. Use the 'Winver' app to read the version number. This version of Windows no longer receives security updates, and should be updated to the current Windows 10 release, or taken offline.

    More at Microsoft:
    https://support.microsoft.com/en-us/help/4015562/windows-10-version-1507-will-no-longer-receive-security-updates

  • Tue
    09
    May
    2017

    Windows 10, version 1507, is also known as Build 10240, and was the RTM (release to manufacturing) or first published version of Windows 10. After Extended support ends, there will be no more security patches to this version of Windows.

  • Tue
    10
    Oct
    2017

    Includes all programs within this version of Microsoft Office, but the security problems apply in particular to software that receives information from the Internet: Outlook, OneNote.

    The support date is for the last service pack for this version of Office, Service Pack 3. Support for this version of Office, without service packs, ended January 13th, 2009.

    End of extended support refers to the date when Microsoft no longer provides automatic fixes, updates, or online technical assistance.

  • Tue
    10
    Oct
    2017

    Windows 10 version 1511 was known as "November Update" or build 10586.753, released November 12, 2015. Use the 'Winver' app to read the version number. This version of Windows no longer receives security updates, and should be updated to the current Windows 10 release, or taken offline.

    https://support.microsoft.com/en-gb/help/4035050/windows-10-version-1511-will-no-longer-receive-security-updates

  • Tue
    10
    Oct
    2017

    Windows 10, version 1511, is also known as Build 10586, and was the "November Update" to Windows 10. After Extended support ends, there will be no more security patches to this version of Windows.

  • Tue
    10
    Oct
    2017

    Microsoft Office 2007 left the end of Extended Support on October 10th, 2017, and no longer receives security fixes. Mainstream Support, which also included bug fixes, ended October 9th of 2012. These dates are for Office installations that included Service Pack 3. Un-updated versions ended Extended Support on January 13th, 2009, Service Pack 1 support ended January 13th, 2010, and Service Pack 2 support ended January 8th, 2013.

    The product was launched January 7th, 2007.