March 10, 2026—KB5078938 (OS Build 14393.8957)

March 10, 2026—KB5078938 OS Build 14393.8957 Applies To Windows Server 2016, all editions Win 10 Ent LTSB 2016 Win 10 IoT Ent LTSB 2016 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect...

March 10, 2026—KB5078885 (OS Builds 19045.7058 and 19044.7058)

March 10, 2026—KB5078885 OS Builds 19045.7058 and 19044.7058 Applies To Windows 10 ESU Windows 10 Enterprise LTSC 2021 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of...

February 10, 2026—KB5075912 (OS Builds 19045.6937 and 19044.6937)

February 10, 2026—KB5075912 OS Builds 19045.6937 and 19044.6937 Applies To Windows 10 ESU Windows 10 Enterprise LTSC 2021 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability o...

January 24, 2026—KB5078129 (OS Builds 19045.6812 and 19044.6812) Out-of-band

January 24, 2026—KB5078129 OS Builds 19045.6812 and 19044.6812 Out-of-band Applies To Windows 10 ESU Windows 10 Enterprise LTSC 2021 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect th...

January 24, 2026—KB5078131 (OS Build 17763.8281) Out-of-band

January 24, 2026—KB5078131 OS Build 17763.8281 Out-of-band Applies To Win 10 Ent LTSC 2019 Windows Server 2019 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain...

January 17, 2026—KB5077796 (OS Builds 19045.6811 and 19044.6811) Out-of-band

January 17, 2026—KB5077796 OS Builds 19045.6811 and 19044.6811 Out-of-band Applies To Windows 10 ESU Windows 10 Enterprise LTSC 2021 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect th...

January 13, 2026—KB5073724 (OS Builds 19045.6809 and 19044.6809)

January 13, 2026—KB5073724 OS Builds 19045.6809 and 19044.6809 Applies To Windows 10 ESU Windows 10 Enterprise LTSC 2021 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of...

January 13, 2026—KB5073455 (OS Build 22631.6491)

January 13, 2026—KB5073455 OS Build 22631.6491 Applies To Windows 11 version 23H2, all editions This cumulative update for Windows 11, version 23H2 KB5073455, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn...

January 13, 2026—KB5073723 (OS Build 17763.8276)

January 13, 2026—KB5073723 OS Build 17763.8276 Applies To Windows Server 2019 Win 10 Ent LTSC 2019 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and...

December 18, 2025—KB5074975 (OS Build 17763.8148) Out-of-band

December 18, 2025—KB5074975 OS Build 17763.8148 Out-of-band Applies To Win 10 Ent LTSC 2019 Windows Server 2019 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain...

November 11, 2025—KB5068791 (OS Build 17763.8027)

November 11, 2025—KB5068791 OS Build 17763.8027 Applies To Win 10 Ent LTSC 2019 Windows Server 2019 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and...

December 9, 2025—KB5071543 (OS Build 14393.8688)

December 9, 2025—KB5071543 OS Build 14393.8688 Applies To Windows Server 2016, all editions Win 10 Ent LTSB 2016 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain...

December 9, 2025—KB5071546 (OS Builds 19045.6691 and 19044.6691)

December 9, 2025—KB5071546 OS Builds 19045.6691 and 19044.6691 Applies To Windows 10 ESU Windows 10 Enterprise LTSC 2021 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of...

October 14, 2025—KB5066836 (OS Build 14393.8519)

October 14, 2025—KB5066836 OS Build 14393.8519 Applies To Windows 10, version 1607, all editions Windows Server 2016, all editions Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the...

September 9, 2025—KB5065429 (OS Builds 19044.6332 and 19045.6332)

September 9, 2025—KB5065429 OS Builds 19044.6332 and 19045.6332 Applies To Windows 10 Home and Pro, version 21H2 Windows 10 Enterprise and Education, version 21H2 Windows 10 IoT Enterprise, version 21H2 Windows 10 Home and Pro, version 22H2 Windows 10 Enterprise Multi-Session, version 22H2 Window...

September 9, 2025—KB5065428 (OS Build 17763.7792)

September 9, 2025—KB5065428 OS Build 17763.7792 Applies To Windows 10 Enterprise, version 1809 Windows Server 2019 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certa...

September 9, 2025—KB5065427 (OS Build 14393.8422)

September 9, 2025—KB5065427 OS Build 14393.8422 Applies To Windows 10, version 1607, all editions Windows Server 2016, all editions Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the...

August 26, 2025—KB5063842 (OS Build 19045.6282) Preview

August 26, 2025—KB5063842 OS Build 19045.6282 Preview Applies To Windows 10 Home and Pro, version 22H2 Windows 10 Enterprise Multi-Session, version 22H2 Windows 10 Enterprise and Education, version 22H2 Windows 10 IoT Enterprise, version 22H2 Windows Secure Boot certificate expiration Important:...

July 8, 2025—KB5062560 (OS Build 14393.8246)

July 8, 2025—KB5062560 OS Build 14393.8246 Applies To Windows 10, version 1607, all editions Windows Server 2016, all editions Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the...

July 8, 2025—KB5062554 (OS Builds 19044.6093 and 19045.6093)

July 8, 2025—KB5062554 OS Builds 19044.6093 and 19045.6093 Applies To Windows 10 Enterprise LTSC 2021 Windows 10 IoT Enterprise LTSC 2021 Windows 10, version 22H2, all editions Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started...