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—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—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...

.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...

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 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 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 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...

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—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...

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,...

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...

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—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...

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,...

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...

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—Hotpatch KB5077212 (OS Builds 26200.7781 and 26100.7781)

February 10, 2026—Hotpatch KB5077212 OS Builds 26200.7781 and 26100.7781 This Hotpatch update for Windows 11, version 25H2 and 24H2 KB5077212, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview updates,...

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 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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KB5075902: Servicing stack update for Windows 10, version 1607 and Windows Server 2016: February 10, 2026

KB5075902: Servicing stack update for Windows 10, version 1607 and Windows Server 2016: February 10, 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...

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...

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...

January 29, 2026—KB5074105 (OS Builds 26200.7705 and 26100.7705) Preview

January 29, 2026—KB5074105 OS Builds 26200.7705 and 26100.7705 Preview ​​​​​This non-security update for Windows 11, version 25H2 and 24H2 KB5074105, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview...

January 29, 2026-KB5074828 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2

January 29, 2026-KB5074828 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 Release Date: January 29, 2026 Version: .NET Framework 3.5 and 4.8.1 The January 29, 2026 update for Windows 11, version 25H2 includes security and cumulative reliability improvement...

January 29, 2026-KB5074831 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2

January 29, 2026-KB5074831 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 Release Date: January 29, 2026 Version: .NET Framework 3.5 and 4.8.1 The January 29, 2026 update for Windows 11, version 24H2 and Microsoft server operating system version 24H2...

Description of the security update for Office 2016: January 26, 2026 (KB5002713)

Description of the security update for Office 2016: January 26, 2026 KB5002713 Summary This security update resolves a Microsoft Word security feature bypass vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2026-21509. Note: To apply thi...

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 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...

January 24, 2026—KB5078135 (OS Build 26100.32236) Out-of-band

January 24, 2026—KB5078135 OS Build 26100.32236 Out-of-band ​​​​This out-of-band update for Windows Server 2025 KB5078135 is cumulative. It includes updates from previous security releases, along with an additional fix. To learn more about differences between security updates, optional non-securi...

January 24, 2026—KB5078132 (OS Build 22631.6495) Out-of-band

January 24, 2026—KB5078132 OS Build 22631.6495 Out-of-band ​​​​​​​​​​​​​​​​​​This out-of-band update for Windows 11, version 23H2 KB5078132 is cumulative. It includes updates from previous security releases, along with an additional fix. To learn more about differences between security updates,...

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 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 i...

January 24, 2026—KB5078133 (OS Build 25398.2097) Out-of-band

January 24, 2026—KB5078133 OS Build 25398.2097 Out-of-band ​​​​This out-of-band update for Windows Server 23H2 KB5078133 is cumulative. It includes updates from previous security, along with an additional fix. To learn more about differences between security updates, optional non-security preview...

January 24, 2026—KB5078127 (OS Builds 26200.7628 and 26100.7628) Out-of-band

January 24, 2026—KB5078127 OS Builds 26200.7628 and 26100.7628 Out-of-band ​​​​This out-of-band update for Windows 11, version 25H2 and 24H2 KB5078127 is cumulative. It includes updates from previous security and non-security releases, along with an additional fix. To learn more about differences...

January 24, 2026—KB5078136 (OS Build 20348.4651) Out-of-band

January 24, 2026—KB5078136 OS Build 20348.4651 Out-of-band This out-of-band update for Windows Server 2022 KB5078136 is cumulative. It includes updates from previous security, along with an additional fix. To learn more about differences between security updates, optional non-security preview...

January 17, 2026—KB5077795 (OS Build 17763.8280) Out-of-band

January 17, 2026—KB5077795 OS Build 17763.8280 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 i...

January 17, 2026—KB5077744 (OS Builds 26200.7627 and 26100.7627) Out-of-band

January 17, 2026—KB5077744 OS Builds 26200.7627 and 26100.7627 Out-of-band ​​​​This out-of-band update for Windows 11, version 25H2 and 24H2 KB5077744 is cumulative. It includes updates from previous security and non-security releases, along with an additional fix. To learn more about differences...

January 17, 2026—KB5077800 (OS Build 20348.4650) Out-of-band

January 17, 2026—KB5077800 OS Build 20348.4650 Out-of-band ​​This out-of-band update for Windows Server 2022 KB5077800 is cumulative. It includes updates from previous security, along with an additional fix. To learn more about differences between security updates, optional non-security preview...

January 17, 2026—KB5077793 (OS Build 26100.32234) Out-of-band

January 17, 2026—KB5077793 OS Build 26100.32234 Out-of-band ​​​​This out-of-band update for Windows Server 2025 KB5077793 is cumulative. It includes updates from previous security releases, along with an additional fix. To learn more about differences between security updates, optional non-securi...

January 17, 2026—KB5077792 (OS Build 25398.2096) Out-of-band

January 17, 2026—KB5077792 OS Build 25398.2096 Out-of-band ​​​​This out-of-band update for Windows Server 23H2 KB5077792 is cumulative. It includes updates from previous security, along with an additional fix. To learn more about differences between security updates, optional non-security preview...

January 17, 2026—KB5077797 (OS Build 22631.6494) Out-of-band

January 17, 2026—KB5077797 OS Build 22631.6494 Out-of-band ​​​​This out-of-band update for Windows 11, version 23H2 KB5077797 is cumulative. It includes updates from previous security releases, along with an additional fix. To learn more about differences between security updates, optional...

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 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...

KB5072936 - Description of the security update for SQL Server 2022 CU22: January 13, 2026

KB5072936 - Description of the security update for SQL Server 2022 CU22: January 13, 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...

End of support for Office 2016 and Office 2019

None None...

Description of the security update for SharePoint Server 2016: January 13, 2026 (KB5002828)

Description of the security update for SharePoint Server 2016: January 13, 2026 KB5002828 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 Office Online Server: January 13, 2026 (KB5002824)

Description of the security update for Office Online Server: January 13, 2026 KB5002824 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 Language Pack: January 13, 2026 (KB5002823)

Description of the security update for SharePoint Server 2019 Language Pack: January 13, 2026 KB5002823 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.​​​​​​​ I...

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...