June 9, 2026—KB5094042 (Monthly Rollup)

June 9, 2026—KB5094042 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, please make sure all Subset of endpoints for ESU only are...

April 14, 2026—KB5082060 (OS Build 25398.2274)

April 14, 2026—KB5082060 OS Build 25398.2274 This cumulative update for Windows Server, version 23H2 KB5082060, 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 updates...

April 14, 2026—KB5082123 (OS Build 17763.8644)

April 14, 2026—KB5082123 OS Build 17763.8644 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 the past...

April 14, 2026—KB5082198 (OS Build 14393.9060)

April 14, 2026—KB5082198 OS Build 14393.9060 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 the past...

February 10, 2026—KB5075971 (Monthly Rollup)

February 10, 2026—KB5075971 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, please make sure all Subset of endpoints for ESU only...

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

January 24, 2026—KB5078131 OS Build 17763.8281 Out-of-band 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 device...

January 13, 2026—KB5073457 (OS Build 20348.4648)

January 13, 2026—KB5073457 OS Build 20348.4648 This cumulative update for Windows Server 2022 KB5073457, 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 updates,...

January 13, 2026—KB5073697 (Monthly Rollup)

January 13, 2026—KB5073697 Monthly Rollup 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 the past...

January 13, 2026—KB5073455 (OS Build 22631.6491)

January 13, 2026—KB5073455 OS Build 22631.6491 ​​​​​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 more about differences between security...

January 13, 2026—KB5073699 (Security-only update)

January 13, 2026—KB5073699 Security-only update 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 the...

December 18, 2025—KB5074976 (OS Builds 19044.6693 and 19045.6693) Out-of-band

December 18, 2025—KB5074976 OS Builds 19044.6693 and 19045.6693 Out-of-band 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-manage...

December 18, 2025—KB5074980 (Monthly Rollup) Out-of-band

December 18, 2025—KB5074980 Monthly Rollup Out-of-band Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, please make sure all Subset of endpoints...

November 11, 2025—KB5068908 (Security-only update)

November 11, 2025—KB5068908 Security-only update 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 the...

KB5068783: Servicing stack update for Windows Server 2012 R2: November 11, 2025

KB5068783: Servicing stack update for Windows Server 2012 R2: November 11, 2025 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...

October 14, 2025—KB5066874 (Monthly Rollup)

October 14, 2025—KB5066874 Monthly Rollup 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 the past...

October 14, 2025—KB5066872 (Monthly Rollup)

October 14, 2025—KB5066872 Monthly Rollup 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 the past...

October 23, 2025—KB5070884 (OS Build 20348.4297) Out-of-band

October 23, 2025—KB5070884 OS Build 20348.4297 Out-of-band 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 device...

September 9, 2025—KB5065511 (Security-only update)

September 9, 2025—KB5065511 Security-only update 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 the...

September 9, 2025—KB5065510 (Security-only update)

September 9, 2025—KB5065510 Security-only update 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 the...

KB5065768: Servicing stack update for Windows Server 2012: September 9, 2025

KB5065768: Servicing stack update for Windows Server 2012: September 9, 2025 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-manag...