April 30, 2026—KB5083806 (OS Build 28000.1896) Preview

April 30, 2026—KB5083806 OS Build 28000.1896 Preview ​​​​This non-security update for Windows 11, version 26H1 KB5083806, includes production-quality improvements. To learn more about differences between security updates, optional non-security preview updates, out-of-band OOB updates, and...

March 26, 2026—KB5079391 (OS Builds 26200.8116 and 26100.8116) Preview

March 26, 2026—KB5079391 OS Builds 26200.8116 and 26100.8116 Preview This update is no longer being offered to new devices due to an installation issue identified after release. The issue has been addressed in the March 31, 2026—KB5086672 OS Builds 26200.8117 and 26100.8117 Out-of-band update tha...

December 1, 2025—KB5070311 (OS Builds 26200.7309 and 26100.7309) Preview

December 1, 2025—KB5070311 OS Builds 26200.7309 and 26100.7309 Preview ​​​​​This non-security update for Windows 11, version 25H2 and 24H2 KB5070311, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview...

October 28, 2025—KB5067112 (OS Build 22631.6133) Preview

October 28, 2025—KB5067112 OS Build 22631.6133 Preview ​​​​​This non-security update for Windows 11, version 23H2 KB5067112, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview updates, Out-of-band OOB...

July 22, 2025—KB5062649 (OS Build 19045.6159) Preview

July 22, 2025—KB5062649 OS Build 19045.6159 Preview Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not...

September 26, 2024—KB5043145 (OS Builds 22621.4249 and 22631.4249) Preview

September 26, 2024—KB5043145 OS Builds 22621.4249 and 22631.4249 Preview 07/09/24---END OF SERVICE NOTICE ---IMPORTANT Home and Pro editions of Windows 11, version 22H2 will reach end of service on October 8, 2024. Until then, these editions will only receive security updates. They will not...

January 23, 2024—KB5034204 (OS Builds 22621.3085 and 22631.3085) Preview

January 23, 2024—KB5034204 OS Builds 22621.3085 and 22631.3085 Preview UPDATED 2/27/24 IMPORTANT: New dates for the end of non-security updates for Windows 11, version 22H2The new end date is June 24, 2025 for Windows 11, version 22H2 Enterprise, Education, IoT Enterprise, and Enterprise...

October 31, 2023—KB5031455 (OS Builds 22621.2506 and 22631.2506) Preview

October 31, 2023—KB5031455 OS Builds 22621.2506 and 22631.2506 Preview 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 11, version 23H2, see its update history page. Note Follow...

November 22, 2022—KB5020032 (OS Build 20348.1311) Preview

November 22, 2022—KB5020032 OS Build 20348.1311 Preview NEW 12/22/22 IMPORTANT After November 22, 2022, there are no more optional, non-security preview releases for Windows Server 2022. Only cumulative monthly security updates known as the "B" or Update Tuesday release will continue for Windows...

October 25, 2022—KB5018496 (OS Build 22621.755) Preview

October 25, 2022—KB5018496 OS Build 22621.755 Preview 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 11, version 22H2, see its update history page. Note Follow @WindowsUpdate to...

September 20, 2022—KB5017379 (OS Build 17763.3469) Preview

September 20, 2022—KB5017379 OS Build 17763.3469 Preview REMINDER 9/20/22 After today, September 20, 2022, there will no longer be optional, non-security releases known as "C" or preview releases for the 2019 LTSC editions and Windows Server 2019. Only cumulative monthly security updates known as...

September 20, 2022-KB5017859 Cumulative Update Preview for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 11

September 20, 2022-KB5017859 Cumulative Update Preview for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 11 Release Date: September 20, 2022 Version: .NET Framework 3.5, 4.8 and 4.8.1 Summary This article describes the Cumulative Update for 3.5, 4.8 and 4.8.1 for Windows 11. Security Improvements...

September 20, 2022-KB5017860 Cumulative Update Preview for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2

September 20, 2022-KB5017860 Cumulative Update Preview for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 Release Date: September 20, 2022 Version: .NET Framework 3.5, 4.8 and 4.8.1 Summary This article describes the Cumulative Update for 3.5, 4.8 and 4.8.1 f...

August 23, 2022—KB5016690 (OS Build 17763.3346) Preview

August 23, 2022—KB5016690 OS Build 17763.3346 Preview 7/12/22 After September 20, 2022, there will no longer be optional, non-security releases known as "C" or preview releases for the 2019 LTSC editions and Windows Server 2019. Only cumulative monthly security updates known as the "B" or Update...

April 25, 2022—KB5011831 (OS Builds 19042.1682, 19043.1682, and 19044.1682) Preview

April 25, 2022—KB5011831 OS Builds 19042.1682, 19043.1682, and 19044.1682 Preview 3/15/22 IMPORTANT Windows 10, version 20H2 will reach end of service on May 10, 2022 for devices running the Home, Pro, Pro Education, and Pro for Workstations editions. After May 10, 2022, these devices will no...

January 27, 2022 Preview update (KB5009625)

January 27, 2022 Preview update KB5009625 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 Azure Stack HCI, version 20H2, see its update history page. Improvements This non-security update...

May 20, 2021—KB5003212 (OS Build 18363.1593) Preview

May 20, 2021—KB5003212 OS Build 18363.1593 Preview 5/11/21 REMINDER Windows 10, version 1909 reached end of service on May 11, 2021 for devices running the Home, Pro, Pro for Workstation, Nano Container, and Server SAC editions. After May 11, 2021, these devices will no longer receive monthly...

April 28, 2021—KB5001391 (OS Builds 19041.964 and 19042.964) Preview

April 28, 2021—KB5001391 OS Builds 19041.964 and 19042.964 Preview 4/13/21 REMINDER Microsoft removed the Microsoft Edge Legacy desktop application that is out of support in March 2021. On April 13, 2021, we installed the new Microsoft Edge. For more information, see New Microsoft Edge to replace...

February 25, 2020—KB4537807 (Preview of Monthly Rollup)

February 25, 2020—KB4537807 Preview of Monthly Rollup Improvements and fixes This non-security update includes improvements and fixes that were a part of KB4537814released February 11, 2020 and also includes these new quality improvements as a preview of the next Monthly Rollup update: No...

February 2, 2021—KB4598291 (OS Builds 19041.789 and 19042.789) Preview

February 2, 2021—KB4598291 OS Builds 19041.789 and 19042.789 Preview Important:12/8/20 Adobe Flash Player went out of support on December 31, 2020. For more information, see Adobe Flash end of support on December 31, 2020. Adobe started blocking Flash content from running in Flash Player on Janua...