January 13, 2026—KB5073379 (OS Build 26100.32230)

January 13, 2026—KB5073379 OS Build 26100.32230 ​​​​​This cumulative update for Windows Server 2025 KB5073379, 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,...

Description of the security update for Office 2016: January 13, 2026 (KB5002826)

Description of the security update for Office 2016: January 13, 2026 KB5002826 Summary This security update resolves a Microsoft Office Remote Code Execution vulnerability and Microsoft Office Click-To-Run Elevation of Privilege vulnerability. To learn more about the vulnerabilities, see the...

Description of the security update for SharePoint Server 2019: January 13, 2026 (KB5002825)

Description of the security update for SharePoint Server 2019: January 13, 2026 KB5002825 Summary Important: If you're currently running SharePoint Workflow Manager, you must install the SharePoint Workflow Manager KB5002799 to your farm before you install this cumulative update. If you're...

Description of the security update for SharePoint Server Subscription Edition: January 13, 2026 (KB5002822)

Description of the security update for SharePoint Server Subscription Edition: January 13, 2026 KB5002822 Summary Important: If you're currently running SharePoint Workflow Manager, you must install SharePoint Workflow Manager KB5002799 to your farm before you install this cumulative update. If...

January 13, 2026—KB5073450 (OS Build 25398.2092)

January 13, 2026—KB5073450 OS Build 25398.2092 This cumulative update for Windows Server, version 23H2 KB5073450, 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 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 updat...

January 13, 2026—KB5073695 (Monthly Rollup)

January 13, 2026—KB5073695 Monthly Rollup 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 updated in...

January 13, 2026—KB5073700 (Security-only update)

January 13, 2026—KB5073700 Security-only update 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 updat...

KB5073031 - Description of the security update for SQL Server 2022 GDR: January 13, 2026

KB5073031 - Description of the security update for SQL Server 2022 GDR: January 13, 2026 Summary Improvements and fixes included in this update How to obtain and install the update More information File information Information about protection and security Summary This security update contains...

January 13, 2026—KB5073697 (Monthly Rollup)

January 13, 2026—KB5073697 Monthly Rollup 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 updated in...

KB5073177 - Description of the security update for SQL Server 2025 GDR: January 13, 2026

KB5073177 - Description of the security update for SQL Server 2025 GDR: January 13, 2026 Summary Improvements and fixes included in this update How to obtain and install the update More information File information Information about protection and security Summary This security update contains...

January 13, 2026—KB5073723 (OS Build 17763.8276)

January 13, 2026—KB5073723 OS Build 17763.8276 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 update...

January 13, 2026—KB5073722 (OS Build 14393.8783)

January 13, 2026—KB5073722 OS Build 14393.8783 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 update...

January 13, 2026—KB5073696 (Monthly Rollup)

January 13, 2026—KB5073696 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 R2. For a successful installation, please make sure all Subset of endpoints for ESU on...

January 13, 2026—KB5073698 (Monthly Rollup)

January 13, 2026—KB5073698 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 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—KB5074109 (OS Builds 26200.7623 and 26100.7623)

January 13, 2026—KB5074109 OS Builds 26200.7623 and 26100.7623 ​​​​​This cumulative update for Windows 11, version 25H2 and 24H2 KB5074109, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about...

Description of the security update for Excel 2016: January 13, 2026 (KB5002831)

Description of the security update for Excel 2016: January 13, 2026 KB5002831 Summary This security update resolves Microsoft Excel Remote Code Execution Vulnerability. To learn more about the vulnerability, see the following security advisories: Microsoft Common Vulnerabilities and Exposures...

Description of the security update for SharePoint Server 2016 Language Pack: January 13, 2026 (KB5002827)

Description of the security update for SharePoint Server 2016 Language Pack: January 13, 2026 KB5002827 Summary Important: If you're running Microsoft SharePoint Server 2013-type workflows, you must install the August 2025 update for SharePoint Workflow Manager to your farm before you install thi...

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

January 13, 2026—KB5073724 OS Builds 19045.6809 and 19044.6809 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 secure...

KB5073447: Servicing stack update for Windows 10, version 1607 and Windows Server 2016: January 13, 2026

KB5073447: Servicing stack update for Windows 10, version 1607 and Windows Server 2016: January 13, 2026 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...

.NET 9.0 Update - January 13, 2026

.NET 9.0 Update - January 13, 2026 .NET 9.0 has been refreshed with the latest update as of January 13, 2026. This update contains non-security fixes. See the release notes for details about updated packages..NET 9.0 servicing updates are upgrades. The latest servicing update for 9.0 will remove...

.NET 8.0 Update - January 13, 2026

.NET 8.0 Update - January 13, 2026 .NET 8.0 has been refreshed with the latest update as of January 13, 2026. This update contains non-security fixes. See the release notes for details about updated packages..NET 8.0 servicing updates are upgrades. The latest servicing update for 8.0 will remove...

.NET 10.0 Update - January 13, 2026

.NET 10.0 Update - January 13, 2026 .NET 10.0 has been refreshed with the latest update as of January 13, 2026. This update contains non-security fixes. See the release notes for details about updated packages..NET 10.0 servicing updates are upgrades. The latest servicing update for 10.0 will...

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...

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 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 t...

December 18, 2025—KB5074979 (Monthly Rollup) Out-of-band

December 18, 2025—KB5074979 Monthly Rollup Out-of-band 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 no...

December 18, 2025—KB5074978 (Monthly Rollup) Out-of-band

December 18, 2025—KB5074978 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 R2. For a successful installation, please make sure all Subset of endpoin...

December 18, 2025—KB5074974 (OS Build 14393.8692) Out-of-band

December 18, 2025—KB5074974 OS Build 14393.8692 Out-of-band 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 ...

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

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

December 18, 2025—KB5074977 (Monthly Rollup) Out-of-band

December 18, 2025—KB5074977 Monthly Rollup Out-of-band 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 no...

.NET 10.0 Update - December 9, 2025 (KB5072928)

.NET 10.0 Update - December 9, 2025 KB5072928 .NET 10.0 has been refreshed with the latest update as of December 9, 2025. This update contains non-security fixes. See the release notes for details about updated packages..NET 10.0 servicing updates are upgrades. The latest servicing update for 10....

Azure File Sync Agent v22 - December 2025

Azure File Sync Agent v22 - December 2025 This article describes the improvements and issues that are fixed in the Azure File Sync Agent v22 release that is dated December 2025. Additionally, this article contains installation instructions for this release. Improvements and issues that are fixed...

October 14, 2025—KB5066586 (OS Build 17763.7919)

October 14, 2025—KB5066586 OS Build 17763.7919 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 update...

October 14, 2025—KB5066835 (OS Builds 26200.6899 and 26100.6899)

October 14, 2025—KB5066835 OS Builds 26200.6899 and 26100.6899 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 secure...

KB5074353: Security Update for Windows PowerShell (OS Build 20348.4467)

KB5074353: Security Update for Windows PowerShell OS Build 20348.4467 For information about Windows update terminology, see types of Windows updates and the monthly quality update types. To find an overview of Windows Server 2022, see the update history page for Windows Server 2022.Be sure to...

December 9, 2025—KB5071547 (OS Build 20348.4529)

December 9, 2025—KB5071547 OS Build 20348.4529 This cumulative update for Windows Server 2022 KB5071547, 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,...

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

December 9, 2025—KB5071546 OS Builds 19045.6691 and 19044.6691 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 secure...

December 9, 2025—KB5071504 (Monthly Rollup)

December 9, 2025—KB5071504 Monthly Rollup 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 updated in...

December 9, 2025—KB5071417 (OS Build 22631.6345)

December 9, 2025—KB5071417 OS Build 22631.6345 ​​​​​This cumulative update for Windows 11, version 23H2 KB5071417, 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...

November 11, 2025—KB5068861 (OS Builds 26200.7171 and 26100.7171)

November 11, 2025—KB5068861 OS Builds 26200.7171 and 26100.7171 ​​​​​This cumulative update for Windows 11, version 25H2 and 24H2 KB5068861, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about...

December 9, 2025—KB5071543 (OS Build 14393.8688)

December 9, 2025—KB5071543 OS Build 14393.8688 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 update...

December 9, 2025—KB5071542 (OS Build 25398.2025)

December 9, 2025—KB5071542 OS Build 25398.2025 This cumulative update for Windows Server, version 23H2 KB5071542, 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...

December 9, 2025—Hotpatch KB5071413 (OS Build 20348.4467)

December 9, 2025—Hotpatch KB5071413 OS Build 20348.4467 This Hotpatch update for Windows Server 2022 KB5071413, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview updates, out-of-band OOB updates, and...

November 11, 2025—Hotpatch KB5068966 (OS Build 26100.7092)

November 11, 2025—Hotpatch KB5068966 OS Build 26100.7092 ​​​​​​​This update applies to Windows Server 2025 Datacenter & Standard machines connected to Azure Arc. To learn more about differences between security updates, optional non-security preview updates, out-of-band OOB updates, and continuou...

Description of the security update for Office 2016: December 9, 2025 (KB5002812)

Description of the security update for Office 2016: December 9, 2025 KB5002812 Summary This security update resolves a Microsoft Access Remote Code Execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2025-62552. ​​​​​​​ Note: To...

Description of the security update for SharePoint Server Subscription Edition: December 9, 2025 (KB5002815)

Description of the security update for SharePoint Server Subscription Edition: December 9, 2025 KB5002815 Summary Important: If you're currently running SharePoint Workflow Manager, you must install SharePoint Workflow Manager KB5002799 to your farm before you install this cumulative update. If...

December 9, 2025—KB5071544 (OS Build 17763.8146)

December 9, 2025—KB5071544 OS Build 17763.8146 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 update...

December 9, 2025—KB5071507 (Security-only update)

December 9, 2025—KB5071507 Security-only update 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 updat...

October 14, 2025—KB5066836 (OS Build 14393.8519)

October 14, 2025—KB5066836 OS Build 14393.8519 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 update...