March 18, 2021—KB5001649 (OS Builds 19041.870 and 19042.870) Out-of-band

March 18, 2021—KB5001649 OS Builds 19041.870 and 19042.870 Out-of-band 2/24/21 IMPORTANT As part of the end of support for Adobe Flash, KB4577586 is now available as an optional update from Windows Update WU and Windows Server Update Services WSUS. Installing KB4577586 will remove Adobe Flash...

March 18 2021—KB5001633 (OS Build 14393.4288) Out-of-band

March 18 2021—KB5001633 OS Build 14393.4288 Out-of-band 3/9/21 IMPORTANT As part of the end of support for Adobe Flash, KB4577586 is now available as an optional update from Windows Update WU and Windows Server Update Services WSUS. Installing KB4577586 will remove Adobe Flash Player permanently...

March 15, 2021—KB5001565 (OS Build 17134.2088) Out-of-band

March 15, 2021—KB5001565 OS Build 17134.2088 Out-of-band 12/8/20 For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. To view other notes and messages, see the Windows 10, version 1803 update history home page...

March 15, 2021—KB5001567 (OS Builds 19041.868 and 19042.868) Out-of-band

March 15, 2021—KB5001567 OS Builds 19041.868 and 19042.868 Out-of-band 2/24/21 IMPORTANT As part of the end of support for Adobe Flash, KB4577586 is now available as an optional update from Windows Update WU and Windows Server Update Services WSUS. Installing KB4577586 will remove Adobe Flash...

March 9, 2021—KB5000809 (OS Build 17134.2087)

March 9, 2021—KB5000809 OS Build 17134.2087 12/8/20 For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. To view other notes and messages, see the Windows 10, version 1803 update history home page. Highlights...

April 13, 2021 Servicing Stack Update (KB5001449)

April 13, 2021 Servicing Stack Update KB5001449 Improvements and fixes The servicing stack is the component that installs updates. Servicing stack updates SSU ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. This servicing...

KB5001406: Servicing stack update for Windows 10, version 1909: April 13, 2021

KB5001406: Servicing stack update for Windows 10, version 1909: April 13, 2021 This update applies to the following: Windows 10, version 1909 for x86-based systems Windows 10, version 1909 for ARM64-based systems Windows 10, version 1909 for x64-based systems Windows Server, version 1909 Server...

KB5001404: Servicing stack update for Windows 10, version 1809: April 13, 2021

KB5001404: Servicing stack update for Windows 10, version 1809: April 13, 2021 This update applies to the following: Windows 10, version 1809 for 32-bit devices Windows 10, version 1809 for ARM64-based devices Windows 10, version 1809 for x64-based devices Windows Server 2019 Windows Server 2019...

KB5001400: Servicing stack update for Windows 10, version 1803: April 13, 2021

KB5001400: Servicing stack update for Windows 10, version 1803: April 13, 2021 This update applies to the following: Windows 10, version 1803 for x86-based systems Windows 10, version 1803 for ARM64-based systems Windows 10, version 1803 for x64-based systems Windows Server, version 1803 Server...

KB5001407: Servicing stack update for Windows 10, version 1809: April 22, 2021

KB5001407: Servicing stack update for Windows 10, version 1809: April 22, 2021 This update applies to the following: ​Windows 10 Version 1809 for 32-bit Systems Windows 10 Version 1809 for ARM64-based Systems Windows 10 Version 1809 for x64-based Systems Windows Server 2019 Windows Server 2019...

KB5001403: Servicing stack update for Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2: April 13, 2021

KB5001403: Servicing stack update for Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2: April 13, 2021 This update applies to the following: Windows 8.1 for 32-bit systems Windows 8.1 for x64-based systems Windows RT 8.1 Windows Server 2012 R2 Windows Server 2012 R2 Server Core installatio...

KB5001402: Servicing stack update for Windows 10, version 1607: April 13, 2021

KB5001402: Servicing stack update for Windows 10, version 1607: April 13, 2021 This update applies to the following: Windows 10, version 1607 for x86-based systems Windows 10, version 1607 for x64-based systems Windows Server 2016 Windows Server 2016 Server Core installation Summary This update...

KB5001205: Servicing stack update for Windows 10, version 1909: March 25, 2021

KB5001205: Servicing stack update for Windows 10, version 1909: March 25, 2021 This update applies to the following: Windows 10, version 1909 for x86-based systems Windows 10, version 1909 for ARM64-based systems Windows 10, version 1909 for x64-based systems Windows Server, version 1909 Server...

March 9, 2021 Servicing Stack Update (KB5001158)

March 9, 2021 Servicing Stack Update KB5001158 Improvements and fixes This update makes quality improvements to the servicing stack, which is the component that installs updates. Servicing stack updates SSU make sure that you have a robust and reliable servicing stack so that your devices can...

KB5001079: Servicing stack update for Windows 10: February 12, 2021

KB5001079: Servicing stack update for Windows 10: February 12, 2021 This update applies to the following: Windows 10 for 32-bit Systems Windows 10 for x64-based Systems Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates...

2021-02 Servicing Stack Update for Windows 10 Version 1607 for x64-based Systems (KB4601392)

Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer...

February 9, 2021—KB4601349 (Security-only update)

February 9, 2021—KB4601349 Security-only update IMPORTANT Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases known as "C" releases for this operating...

KB5000908: Servicing stack update for Windows 10, version 1909: March 9, 2021

KB5000908: Servicing stack update for Windows 10, version 1909: March 9, 2021 This update applies to the following: ​Windows 10 Version 1909 for 32-bit Systems Windows 10 Version 1909 for ARM64-based Systems Windows 10 Version 1909 for x64-based Systems Windows Server, version 1909 Server Core...

January 12, 2021 Servicing Stack Update (KB4599118)

January 12, 2021 Servicing Stack Update KB4599118 Improvements and fixes This update makes quality improvements to the servicing stack, which is the component that installs updates. Servicing stack updates SSU make sure that you have a robust and reliable servicing stack so that your devices can...

Servicing stack update for Windows 10, version 1809: January 12, 2021

Servicing stack update for Windows 10, version 1809: January 12, 2021 This update applies to the following: ​Windows 10, version 1809 for 32-bit Systems Windows 10, version 1809 for ARM64-based Systems Windows 10, version 1809 for x64-based Systems Windows Server 2019 Windows Server 2019 Server...