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...

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...

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—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...

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 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...

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 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...

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 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...

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...

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 (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...

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...

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...

.NET 9.0 Update - February 10, 2026

.NET 9.0 Update - February 10, 2026 .NET 9.0 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 9.0 servicing updates are upgrades. The latest servicing update for 9.0 will remove th...

.NET 8.0 Update - February 10, 2026

.NET 8.0 Update - February 10, 2026 .NET 8.0 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 8.0 servicing updates are upgrades. The latest servicing update for 8.0 will remove th...

.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 KB5077212 (OS Builds 26200.7781 and 26100.7781)

None None...

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 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...

February 10, 2026—KB5075904 (OS Build 17763.8389)

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

Description of the security update for Microsoft Exchange Server 2016 CU23: February 10, 2026 (KB5074995)

Description of the security update for Microsoft Exchange Server 2016 CU23: February 10, 2026 KB5074995 This security update resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities and Exposures CVE: CVE-2026-21527...

Description of the security update for Microsoft Exchange Server 2019 CU14: February 10, 2026 (KB5074994)

Description of the security update for Microsoft Exchange Server 2019 CU14: February 10, 2026 KB5074994 This security update resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities and Exposures CVE: CVE-2026-21527...

Description of the security update for Microsoft Exchange Server 2019 CU15: February 10, 2026 (KB5074993)

Description of the security update for Microsoft Exchange Server 2019 CU15: February 10, 2026 KB5074993 This security update resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities and Exposures CVE: CVE-2026-21527...

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

None None...

February 10, 2026—KB5075970 (Monthly Rollup)

February 10, 2026—KB5075970 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...

Description of the security update for Microsoft Exchange Server Subscription Edition RTM: February 10, 2026 (KB5074992)

Description of the security update for Microsoft Exchange Server Subscription Edition RTM: February 10, 2026 KB5074992 This security update resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities and Exposures CVE:...

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...

February 10, 2026—KB5075899 (OS Build 26100.32370)

February 10, 2026—KB5075899 OS Build 26100.32370 ​​​​​This cumulative update for Windows Server 2025 KB5075899, 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...

February 10, 2026—KB5075906 (OS Build 20348.4773)

February 10, 2026—KB5075906 OS Build 20348.4773 This cumulative update for Windows Server 2022 KB5075906, 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,...

February 10, 2026—KB5075999 (OS Build 14393.8868)

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

February 10, 2026—KB5075941 (OS Build 22631.6649)

February 10, 2026—KB5075941 OS Build 22631.6649 ​​​​​This cumulative update for Windows 11, version 23H2 KB5075941, 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...

February 10, 2026—Hotpatch KB5075943 (OS Build 20348.4711)

None None...

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...

February 10, 2026—KB5077179 (OS Build 28000.1575)

February 10, 2026—KB5077179 OS Build 28000.1575 This cumulative update for Windows 11, version 26H1 KB5077179, 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,...

February 10, 2026—KB5077181 (OS Builds 26200.7840 and 26100.7840)

February 10, 2026—KB5077181 OS Builds 26200.7840 and 26100.7840 This cumulative update for Windows 11, version 25H2 and 24H2 KB5077181, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences...

Description of the security update for Word 2016: February 10, 2026 (KB5002839)

Description of the security update for Word 2016: February 10, 2026 KB5002839 Summary This security update resolves a Microsoft Outlook spoofing vulnerability and Microsoft Word spoofing vulnerability. To learn more about the vulnerabilities, see the following security advisories: Microsoft Commo...

Description of the security update for Excel 2016: February 10, 2026 (KB5002837)

Description of the security update for Excel 2016: February 10, 2026 KB5002837 Summary This security update resolves Microsoft Excel information disclosure vulnerability and Microsoft Excel elevation of privilege vulnerability. To learn more about the vulnerabilities, see the following security...

Description of the security update for SharePoint Server 2019 Language Pack: February 10, 2026 (KB5002836)

Description of the security update for SharePoint Server 2019 Language Pack: February 10, 2026 KB5002836 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.​​​​​​​ ...

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...

Description of the security update for Office Online Server: February 10, 2026 (KB5002835)

Description of the security update for Office Online Server: February 10, 2026 KB5002835 Summary This security update resolves Microsoft Excel information disclosure vulnerability, and Microsoft Excel elevation of privilege vulnerability. To learn more about the vulnerabilities, see the following...

Description of the security update for SharePoint Server 2019: February 10, 2026 (KB5002834)

Description of the security update for SharePoint Server 2019: February 10, 2026 KB5002834 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 2016: February 10, 2026 (KB5002841)

Description of the security update for SharePoint Server 2016: February 10, 2026 KB5002841 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 2016 Language Pack: February 10, 2026 (KB5002840)

Description of the security update for SharePoint Server 2016 Language Pack: February 10, 2026 KB5002840 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 th...

Security update 2026-02-10

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KB5075944: Cumulative security update for Internet Explorer: February 10, 2026

KB5075944: Cumulative security update for Internet Explorer: February 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 a...

February 10, 2026-KB5074837 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1

February 10, 2026-KB5074837 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1 Release Date: February 10, 2026 Version: .NET Framework 4.8.1 The February 10, 2026 update for Windows 11, version 26H1 includes security and cumulative reliability improvements in .NET Framework...