May 27, 2025—KB5061977 (OS Build 26100.4066) Out-of-band

May 27, 2025—KB5061977 OS Build 26100.4066 Out-of-band For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview, see the update history page for Windows 11, version24H2. Follow @WindowsUpdate to find out when new...

May 23, 2025—KB5061906 (OS Build 20348.3695) Out-of-band

May 23, 2025—KB5061906 OS Build 20348.3695 Out-of-band For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview of Windows Server 2022, see its update history page.Be sure to follow @WindowsUpdate to find out when new...

CVE-2019-1381

An information disclosure vulnerability exists when the Windows Servicing Stack allows access to unprivileged file locations, aka 'Microsoft Windows Information Disclosure Vulnerability'...

May 16, 2025—Hotpatch KB5061258 (OS Build 26100.3983) Out-of-band

May 16, 2025—Hotpatch KB5061258 OS Build 26100.3983 Out-of-band For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview, see the update history for Windows 11, version 24H2, and the release notes for hotpatch on...

KB5058527: Servicing stack update for Windows 10: May 13, 2025

KB5058527: Servicing stack update for Windows 10: May 13, 2025 Support for Windows 10 has ended on October 14, 2025 After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work,...

KB5058530: Servicing stack update for Windows Server 2012: May 13, 2025

KB5058530: Servicing stack update for Windows Server 2012: May 13, 2025 End of support information Support for Windows Server 2012 will end in October 2026 Windows Server 2012 reached the end of support EOS on October 10, 2023. Extended Security Updates ESUs are available for purchase and will...

KB5058529: Servicing stack update for Windows Server 2012 R2: May 13, 2025

KB5058529: Servicing stack update for Windows Server 2012 R2: May 13, 2025 End of support information Support for Windows Server 2012 R2 will end in October 2026 Windows Server 2012 R2 reached the end of support EOS on October 10, 2023. Extended Security Updates ESUs are available for purchase an...

KB5058524: Servicing stack update for Windows 10, version 1607 and Server 2016: May 13, 2025

KB5058524: Servicing stack update for Windows 10, version 1607 and Server 2016: May 13, 2025 Support for Windows 10 has ended on October 14, 2025 After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows...

April 16, 2025—KB5059092 (OS Build 20348.3566) Out-of-band

April 16, 2025—KB5059092 OS Build 20348.3566 Out-of-band For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview of Windows Server 2022, see its update history page.Be sure to follow @WindowsUpdate to find out when n...

April 11, 2025—KB5058920 (OS Build 20348.3561) Out-of-band

April 11, 2025—KB5058920 OS Build 20348.3561 Out-of-band For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview of Windows Server 2022, see its update history page.Be sure to follow @WindowsUpdate to find out when n...

April 11, 2025—KB5058919 (OS Builds 22621.5192 and 22631.5192) Out-of-band

April 11, 2025—KB5058919 OS Builds 22621.5192 and 22631.5192 Out-of-band For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview of Windows 11, version 23H2, see its update history page. Follow @WindowsUpdate to find...

April 11, 2025—KB5058921 (OS Build 14393.7973) Out-of-band

April 11, 2025—KB5058921 OS Build 14393.7973 Out-of-band For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. For an overview of Windows 10, version 1607, see its update history page. Important Windows updates d...

KB5055664: Servicing stack update for Windows 10: April 9, 2025

KB5055664: Servicing stack update for Windows 10: April 9, 2025 Support for Windows 10 has ended on October 14, 2025 After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work,...

April 8, 2025—KB5055519 (OS Build 17763.7136) - EXPIRED

April 8, 2025—KB5055519 OS Build 17763.7136 - EXPIRED EXPIRATION NOTICEIMPORTANT As of March 31, 2026, this update is no longer available from the Microsoft Update Catalog or other release channels. We recommend that you update your devices to the latest version of Windows. Support for Windows 10...

April 8, 2025—KB5055526 (OS Build 20348.3453)

April 8, 2025—KB5055526 OS Build 20348.3453 For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview of Windows Server 2022, see its update history page.Be sure to follow @WindowsUpdate to find out when new content is...

April 8, 2025—KB5055527 (OS Build 25398.1551)

April 8, 2025—KB5055527 OS Build 25398.1551 For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview of Windows Server, version 23H2, see its update history page. Change log Change date| Change description ---|--- May...

KB5055661: Servicing stack update for Windows 10, version 1607 and Server 2016: April 8, 2025

KB5055661: Servicing stack update for Windows 10, version 1607 and Server 2016: April 8, 2025 Support for Windows 10 has ended on October 14, 2025 After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Window...

KB5055667: Servicing stack update for Windows Server 2012: April 8, 2025

KB5055667: Servicing stack update for Windows Server 2012: April 8, 2025 End of support information Support for Windows Server 2012 will end in October 2026 Windows Server 2012 reached the end of support EOS on October 10, 2023. Extended Security Updates ESUs are available for purchase and will...

KB5056457: Servicing stack update for Windows Server 2008 SP2: April 8, 2025

KB5056457: Servicing stack update for Windows Server 2008 SP2: April 8, 2025 End of support information Support for Windows Server 2008 has ended Windows Server 2008 Premium Assurance ended on January 13, 2026.Windows Server 2008 Extended Security Updates ESU ended on January 10, 2023...

KB5056456: Servicing stack update for Windows Server 2008 R2 SP1: April 8, 2025

KB5056456: Servicing stack update for Windows Server 2008 R2 SP1: April 8, 2025 End of support information Support for Windows Server 2008 R2 has ended Windows Server 2008 R2 Premium Assurance ended on January 13, 2026.Windows Server 2008 R2 Extended Security Updates ESU ended on January 10, 2023...