November 11, 2025—KB5068865 (OS Build 22631.6199)

November 11, 2025—KB5068865 OS Build 22631.6199 ​​​​​This cumulative update for Windows 11, version 23H2 KB5068865, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security...

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...

September 23, 2025—KB5065790 (OS Build 22631.5984) Preview

September 23, 2025—KB5065790 OS Build 22631.5984 Preview Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed business devices...

August 26, 2025—KB5064080 (OS Build 22631.5840) Preview

August 26, 2025—KB5064080 OS Build 22631.5840 Preview Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed business devices for...

August 12, 2025—KB5063875 (OS Builds 22621.5768 and 22631.5768)

August 12, 2025—KB5063875 OS Builds 22621.5768 and 22631.5768 Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed business...

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December 14, 2021—KB5008212 (OS Builds 19041.1415, 19042.1415, 19043.1415, and 19044.1415)

December 14, 2021—KB5008212 OS Builds 19041.1415, 19042.1415, 19043.1415, and 19044.1415 EXPIRATION NOTICEIMPORTAN T As of 9/12/2023, this KB is only available from Windows Update. It is no longer available from the Microsoft Update Catalog or other release channels. We recommend that you update...

November 22, 2021—KB5007253 (OS Builds 19041.1387, 19042.1387, 19043.1387, and 19044.1387) Preview

November 22, 2021—KB5007253 OS Builds 19041.1387, 19042.1387, 19043.1387, and 19044.1387 Preview 11/9/21 IMPORTANT Because of minimal operations during the holidays and the upcoming Western new year, there won’t be a preview release known as a “C” release for the month of December 2021. There wil...

November 9, 2021—KB5007186 (OS Builds 19041.1348, 19042.1348, and 19043.1348)

November 9, 2021—KB5007186 OS Builds 19041.1348, 19042.1348, and 19043.1348 EXPIRATION NOTICEIMPORTAN T As of 9/12/2023, this KB is only available from Windows Update. It is no longer available from the Microsoft Update Catalog or other release channels. We recommend that you update your devices ...

October 26, 2021—KB5006738 (OS Builds 19041.1320, 19042.1320, and 19043.1320) Preview

October 26, 2021—KB5006738 OS Builds 19041.1320, 19042.1320, and 19043.1320 Preview 10/12/21 IMPORTANT Windows 10, version 2004 will reach end of servicing on December 14, 2021. To continue receiving security and quality updates, Microsoft recommends that you update to the latest version of Windo...

June 27, 2019—KB4509475 (OS Build 14393.3056)

June 27, 2019—KB4509475 OS Build 14393.3056 Reminder: The additional servicing for Windows 10 Enterprise, Education, and IoT Enterprise editions ends on April 9, 2019 and doesn't extend beyond this date. To continue receiving security and quality updates, Microsoft recommends updating to the late...

August 17, 2019—KB4512495 (OS Build 14393.3181)

August 17, 2019—KB4512495 OS Build 14393.3181 Reminder: The additional servicing for Windows 10 Enterprise, Education, and IoT Enterprise editions ended on April 9, 2019 and doesn't extend beyond this date. To continue receiving security and quality updates, Microsoft recommends updating to the...

June 18, 2019—KB4503294 (OS Build 14393.3053)

June 18, 2019—KB4503294 OS Build 14393.3053 Reminder: The additional servicing for Windows 10 Enterprise, Education, and IoT Enterprise editions ends on April 9, 2019 and doesn't extend beyond this date. To continue receiving security and quality updates, Microsoft recommends updating to the late...

March 19, 2019—KB4489889 (OS Build 14393.2879)

March 19, 2019—KB4489889 OS Build 14393.2879 Reminder: The additional servicing for Windows 10 Enterprise, Education, and IoT Enterprise editions ends on April 9, 2019 and doesn't extend beyond this date. To continue receiving security and quality updates, Microsoft recommends updating to the...