March 26, 2026—KB5079489 (OS Build 28000.1764) Preview

March 26, 2026—KB5079489 OS Build 28000.1764 Preview ​​​​​This non-security update for Windows 11, version 26H1 KB5079489, incudes production-quality improvements. To learn more about differences between security updates, optional non-security preview updates, Out-of-band OOB updates, and...

March 21, 2026—KB5085516 (OS Builds 26200.8039 and 26100.8039) Out-of-band

March 21, 2026—KB5085516 OS Builds 26200.8039 and 26100.8039 Out-of-band ​​​​This out-of-band update for Windows 11, version 25H2 and 24H2 KB5085516 is cumulative. It includes updates from previous security and non-security releases, along with an additional fix. To learn more about differences...

March 10, 2026—KB5078775 (Monthly Rollup)

March 10, 2026—KB5078775 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 ar...

KB5077474 - Description of the security update for SQL Server 2016 SP3 GDR: March 10, 2026

KB5077474 - Description of the security update for SQL Server 2016 SP3 GDR: March 10, 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...

KB5077470 - Description of the security update for SQL Server 2019 GDR: March 10, 2026

KB5077470 - Description of the security update for SQL Server 2019 GDR: March 10, 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 fixe...

March 10, 2026—KB5078938 (OS Build 14393.8957)

March 10, 2026—KB5078938 OS Build 14393.8957 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 ...

Description of the security update for Office Online Server: March 10, 2026 (KB5002846)

Description of the security update for Office Online Server: March 10, 2026 KB5002846 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...

Description of the security update for SharePoint Server 2019: March 10, 2026 (KB5002845)

Description of the security update for SharePoint Server 2019: March 10, 2026 KB5002845 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 currentl...

March 10, 2026—KB5079473 (OS Builds 26200.8037 and 26100.8037)

March 10, 2026—KB5079473 OS Builds 26200.8037 and 26100.8037 This cumulative update for Windows 11, version 25H2 and 24H2 KB5079473, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences...

March 10, 2026—KB5078752 (OS Build 17763.8511)

March 10, 2026—KB5078752 OS Build 17763.8511 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 ...

March 10, 2026—Hotpatch KB5078736 (OS Build 26100.32463)

March 10, 2026—Hotpatch KB5078736 OS Build 26100.32463 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 continuous...

KB5077472 - Description of the security update for SQL Server 2017 GDR: March 10, 2026

KB5077472 - Description of the security update for SQL Server 2017 GDR: March 10, 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 fixe...

KB5077469 - Description of the security update for SQL Server 2019 CU32: March 10, 2026

KB5077469 - Description of the security update for SQL Server 2019 CU32: March 10, 2026 Summary Improvements and fixes included in this update How to obtain and install the update How to obtain or download the latest cumulative update package for Linux More information File information Informatio...

Description of the security update for Office 2016: March 10, 2026 (KB5002718)

Description of the security update for Office 2016: March 10, 2026 KB5002718 Summary This security update resolves a Microsoft Excel remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2026-26108. Note: To apply this...

March 10, 2026—KB5078734 (OS Build 25398.2207)

March 10, 2026—KB5078734 OS Build 25398.2207 This cumulative update for Windows Server, version 23H2 KB5078734, 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...

March 10, 2026—KB5079466 (OS Build 28000.1719)

March 10, 2026—KB5079466 OS Build 28000.1719 ​​​​​This security update for Windows 11, version 26H1 KB5079466, includes the latest security improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security updates, optional...

Description of the security update for SharePoint Server 2016 Language Pack: March 10, 2026 (KB5002851)

Description of the security update for SharePoint Server 2016 Language Pack: March 10, 2026 KB5002851 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 this...

March 13, 2026—Hotpatch KB5084597 (OS Builds 26200.7982 and 26100.7982) Out-of-band

March 13, 2026—Hotpatch KB5084597 OS Builds 26200.7982 and 26100.7982 Out-of-band This update for Windows 11, version 25H2 and 24H2 KB5084597 incudes security improvements. To learn more about differences between security updates, optional non-security preview updates, out-of-band OOB updates, an...

March 10, 2026—KB5078740 (OS Build 26100.32522)

March 10, 2026—KB5078740 OS Build 26100.32522 ​​​​​This cumulative update for Windows Server 2025 KB5078740, 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,...

March 10, 2026—KB5078766 (OS Build 20348.4893)

March 10, 2026—KB5078766 OS Build 20348.4893 This cumulative update for Windows Server 2022 KB5078766, 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, optiona...

.NET 9.0 Update - March 10, 2026

.NET 9.0 Update - March 10, 2026 .NET 9.0 has been refreshed with the latest update as of March 10, 2026. This update contains 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 the...

KB5078738: Cumulative security update for Internet Explorer: March 10, 2026

KB5078738: Cumulative security update for Internet Explorer: March 10, 2026 Important Certain versions of Microsoft Internet Explorer have reached the end of support. Note that some versions of Internet Explorer may be supported past the latest OS end date when Extended Security Updates ESUs are...

KB5077468 - Description of the security update for SQL Server 2025 GDR: March 10, 2026

KB5077468 - Description of the security update for SQL Server 2025 GDR: March 10, 2026 Applies To SQL Server 2025 on Windows all editions, SQL Server 2025 on Linux all editions Summary Improvements and fixes included in this update How to obtain and install the update More information File...

KB5077465 - Description of the security update for SQL Server 2022 GDR: March 10, 2026

KB5077465 - Description of the security update for SQL Server 2022 GDR: March 10, 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 fixe...

KB5077464 - Description of the security update for SQL Server 2022 CU23: March 10, 2026

KB5077464 - Description of the security update for SQL Server 2022 CU23: March 10, 2026 Summary Improvements and fixes included in this update How to obtain and install the update How to obtain or download the latest cumulative update package for Linux More information File information Informatio...

.NET 8.0 Update - March 10, 2026

.NET 8.0 Update - March 10, 2026 .NET 8.0 has been refreshed with the latest update as of March 10, 2026. This update contains 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 the...

March 10, 2026—Hotpatch KB5079420 (OS Builds 26200.7979 and 26100.7979)

March 10, 2026—Hotpatch KB5079420 OS Builds 26200.7979 and 26100.7979 This Hotpatch update for Windows 11, version 25H2 and 24H2 KB5079420, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview updates,...

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

March 10, 2026—KB5078885 OS Builds 19045.7058 and 19044.7058 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...

Description of the security update for SharePoint Server 2019 Language Pack: March 10, 2026 (KB5002847)

Description of the security update for SharePoint Server 2019 Language Pack: March 10, 2026 KB5002847 Summary Important: If you're running 2013-type workflows, you mustinstall the August 2025 update for SharePoint Workflow Manager to your farm before you install this cumulative update.​​​​​​​ If...

Description of the security update for SharePoint Server Subscription Edition: March 10, 2026 (KB5002843)

Description of the security update for SharePoint Server Subscription Edition: March 10, 2026 KB5002843 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...

Description of the security update for Office 2016: March 10, 2026 (KB5002838)

Description of the security update for Office 2016: March 10, 2026 KB5002838 Summary This security update resolves a Microsoft Office remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2026-26110.​​​​​​​ Note: To appl...

March 10, 2026—KB5078883 (OS Build 22631.6783)

March 10, 2026—KB5078883 OS Build 22631.6783 ​​​​​This cumulative update for Windows 11, version 23H2 KB5078883, 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 update...

KB5077473 - Description of the security update for SQL Server 2016 SP3 Azure Connect Feature Pack: March 10, 2026

KB5077473 - Description of the security update for SQL Server 2016 SP3 Azure Connect Feature Pack: March 10, 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...

KB5077471 - Description of the security update for SQL Server 2017 CU31: March 10, 2026

KB5077471 - Description of the security update for SQL Server 2017 CU31: March 10, 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 fix...

KB5077466 - Description of the security update for SQL Server 2025 CU2: March 10, 2026

KB5077466 - Description of the security update for SQL Server 2025 CU2: March 10, 2026 Applies To SQL Server 2025 on Windows all editions, SQL Server 2025 on Linux all editions Summary Improvements and fixes included in this update How to obtain and install the update How to obtain or download th...

.NET 10.0 Update - March 10, 2026

.NET 10.0 Update - March 10, 2026 .NET 10.0 has been refreshed with the latest update as of March 10, 2026. This update contains 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 remove the...

March 10, 2026—KB5078774 (Monthly Rollup)

March 10, 2026—KB5078774 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 only...

Description of the security update for SharePoint Server 2016: March 10, 2026 (KB5002850)

Description of the security update for SharePoint Server 2016: March 10, 2026 KB5002850 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 currentl...

Description of the security update for Excel 2016: March 10, 2026 (KB5002849)

Description of the security update for Excel 2016: March 10, 2026 KB5002849 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 Word 2016: March 10, 2026 (KB5002848)

Description of the security update for Word 2016: March 10, 2026 KB5002848 Summary This security update resolves a Microsoft Office remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2026-26113. Note: To apply this...

March 2, 2026—KB5082314 (OS Build 20348.4776) Out-of-band

March 2, 2026—KB5082314 OS Build 20348.4776 Out-of-band This out-of-band update for Windows Server 2022 KB5082314 is cumulative. It includes updates from previous security updates, along with an additional fix. To learn more about differences between security updates, optional non-security previe...

February 24, 2026—KB5077241 (OS Builds 26200.7922 and 26100.7922) Preview

February 24, 2026—KB5077241 OS Builds 26200.7922 and 26100.7922 Preview ​​​​​This non-security update for Windows 11, version 25H2 and 24H2 KB5077241, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview...

February 24, 2026—KB5077239 (OS Build 28000.1643) Preview

February 24, 2026—KB5077239 OS Build 28000.1643 Preview ​​​​​This non-security update for Windows 11, version 26H1 KB5077239, 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...

February 10, 2026—KB5075999 (OS Build 14393.8868)

February 10, 2026—KB5075999 OS Build 14393.8868 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...

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

February 10, 2026—KB5075912 OS Builds 19045.6937 and 19044.6937 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...

February 10, 2026—KB5075904 (OS Build 17763.8389)

February 10, 2026—KB5075904 OS Build 17763.8389 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...

Description of the security update for SharePoint Server Subscription Edition: February 10, 2026 (KB5002833)

Description of the security update for SharePoint Server Subscription Edition: February 10, 2026 KB5002833 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...

February 10, 2026—KB5075897 (OS Build 25398.2149)

February 10, 2026—KB5075897 OS Build 25398.2149 This cumulative update for Windows Server, version 23H2 KB5075897, 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...

.NET 10.0 Update - February 10, 2026

.NET 10.0 Update - February 10, 2026 .NET 10.0 has been refreshed with the latest update as of February 10, 2026. This update contains 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 remov...

February 10, 2026—Hotpatch KB5075942 (OS Build 26100.32313)

February 10, 2026—Hotpatch KB5075942 OS Build 26100.32313 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 continuous...