Microsoft Patches Released

Below is a list of patches released by Microsoft January, 2026.

articleIDsupportURLUpdateNameDescriptionArchitectureClassificationSeveritySupportedProducts
KB5074109https://support.microsoft.com/help/5074109https://www.catalog.update.microsoft.com/Search.aspx?q=50741092026-01 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems (KB5074109) (26100.7623)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5074109https://support.microsoft.com/help/5074109https://www.catalog.update.microsoft.com/Search.aspx?q=50741092026-01 Cumulative Update for Windows 11, version 25H2 for arm64-based Systems (KB5074109) (26200.7623)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5074109https://support.microsoft.com/help/5074109https://www.catalog.update.microsoft.com/Search.aspx?q=50741092026-01 Cumulative Update for Windows 11 Version 24H2 for arm64-based Systems (KB5074109) (26100.7623)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5074109https://support.microsoft.com/help/5074109https://www.catalog.update.microsoft.com/Search.aspx?q=50741092026-01 Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5074109) (26200.7623)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5073723https://support.microsoft.com/help/5073723https://www.catalog.update.microsoft.com/Search.aspx?q=50737232026-01 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5073723)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10 LTSB
KB5073723https://support.microsoft.com/help/5073723https://www.catalog.update.microsoft.com/Search.aspx?q=50737232026-01 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5073723)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10 LTSB
KB5073723https://support.microsoft.com/help/5073723https://www.catalog.update.microsoft.com/Search.aspx?q=50737232026-01 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5073723)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2019
KB5073457https://support.microsoft.com/help/5073457https://www.catalog.update.microsoft.com/Search.aspx?q=50734572026-01 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5073457)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.AMD64Security UpdatesCriticalMicrosoft Server operating system-21H2
KB5073724https://support.microsoft.com/help/5073724https://www.catalog.update.microsoft.com/Search.aspx?q=50737242026-01 Cumulative Update for Windows 10 Version 22H2 for ARM64-based Systems (KB5073724)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.ARM64Security UpdatesCriticalWindows 10, version 1903 and later
KB5073724https://support.microsoft.com/help/5073724https://www.catalog.update.microsoft.com/Search.aspx?q=50737242026-01 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5073724)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.AMD64Security UpdatesCriticalWindows 10 LTSB
KB5073724https://support.microsoft.com/help/5073724https://www.catalog.update.microsoft.com/Search.aspx?q=50737242026-01 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5073724)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.X86Security UpdatesCriticalWindows 10 LTSB
KB5073724https://support.microsoft.com/help/5073724https://www.catalog.update.microsoft.com/Search.aspx?q=50737242026-01 Dynamic Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5073724)ComponentUpdate: A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.n/aSecurity UpdatesCriticalWindows 10 and later GDR-DU
KB5073724https://support.microsoft.com/help/5073724https://www.catalog.update.microsoft.com/Search.aspx?q=50737242026-01 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5073724)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.AMD64Security UpdatesCriticalWindows 10, version 1903 and later
KB5073724https://support.microsoft.com/help/5073724https://www.catalog.update.microsoft.com/Search.aspx?q=50737242026-01 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems (KB5073724)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.X86Security UpdatesCriticalWindows 10, version 1903 and later
KB5073724https://support.microsoft.com/help/5073724https://www.catalog.update.microsoft.com/Search.aspx?q=50737242026-01 Dynamic Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5073724)ComponentUpdate: A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.n/aSecurity UpdatesCriticalWindows 10 and later GDR-DU
KB5073724https://support.microsoft.com/help/5073724https://www.catalog.update.microsoft.com/Search.aspx?q=50737242026-01 Cumulative Update for Windows 10 Version 21H2 for ARM64-based Systems (KB5073724)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.ARM64Security UpdatesCriticalWindows 10 LTSB
KB5073724https://support.microsoft.com/help/5073724https://www.catalog.update.microsoft.com/Search.aspx?q=50737242026-01 Dynamic Cumulative Update for Windows 10 Version 21H2 for ARM64-based Systems (KB5073724)ComponentUpdate: A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.n/aSecurity UpdatesCriticalWindows 10 and later GDR-DU
KB5073379https://support.microsoft.com/help/5073379https://www.catalog.update.microsoft.com/Search.aspx?q=50733792026-01 Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5073379) (26100.32230)Install this update to resolve issues in Microsoft server operating system, version 24H2. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalMicrosoft Server Operating System-24H2
KB5073455https://support.microsoft.com/help/5073455https://www.catalog.update.microsoft.com/Search.aspx?q=50734552026-01 Cumulative Update for Windows 11 Version 23H2 for x64-based Systems (KB5073455)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5073455https://support.microsoft.com/help/5073455https://www.catalog.update.microsoft.com/Search.aspx?q=50734552026-01 Cumulative Update for Windows 11 Version 23H2 for arm64-based Systems (KB5073455)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5073450https://support.microsoft.com/help/5073450https://www.catalog.update.microsoft.com/Search.aspx?q=50734502026-01 Cumulative Update for Microsoft server operating system version 23H2 for x64-based Systems (KB5073450)Install this update to resolve issues in Microsoft server operating system, version 23H2. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalMicrosoft Server Operating System-23H2
KB5073722https://support.microsoft.com/help/5073722https://www.catalog.update.microsoft.com/Search.aspx?q=50737222026-01 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5073722)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2016
KB5073722https://support.microsoft.com/help/5073722https://www.catalog.update.microsoft.com/Search.aspx?q=50737222026-01 Cumulative Update for Windows 10 Version 1607 for x86-based Systems (KB5073722)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10
KB5073722https://support.microsoft.com/help/5073722https://www.catalog.update.microsoft.com/Search.aspx?q=50737222026-01 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB5073722)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10
KB5073698https://support.microsoft.com/help/5073698https://www.catalog.update.microsoft.com/Search.aspx?q=50736982026-01 Security Monthly Quality Rollup for Windows Server 2012 for x64-based Systems (KB5073698)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesImportantWindows Server 2012
KB5073696https://support.microsoft.com/help/5073696https://www.catalog.update.microsoft.com/Search.aspx?q=50736962026-01 Security Monthly Quality Rollup for Windows Server 2012 R2 for x64-based Systems (KB5073696)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesImportantWindows Server 2012 R2
KB5073697https://support.microsoft.com/help/5073697https://www.catalog.update.microsoft.com/Search.aspx?q=50736972026-01 Security Monthly Quality Rollup for Windows Server 2008 for x64-based Systems (KB5073697)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesImportantWindows Server 2008
KB5073697https://support.microsoft.com/help/5073697https://www.catalog.update.microsoft.com/Search.aspx?q=50736972026-01 Security Monthly Quality Rollup for Windows Server 2008 for x86-based Systems (KB5073697)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesImportantWindows Server 2008
KB5073700https://support.microsoft.com/help/5073700https://www.catalog.update.microsoft.com/Search.aspx?q=50737002026-01 Security Only Quality Update for Windows Server 2008 for x86-based Systems (KB5073700)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesImportantWindows Server 2008
KB5073700https://support.microsoft.com/help/5073700https://www.catalog.update.microsoft.com/Search.aspx?q=50737002026-01 Security Only Quality Update for Windows Server 2008 for x64-based Systems (KB5073700)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesImportantWindows Server 2008
KB5073695https://support.microsoft.com/help/5073695https://www.catalog.update.microsoft.com/Search.aspx?q=50736952026-01 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB5073695)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesImportantWindows Server 2008 R2
KB5073699https://support.microsoft.com/help/5073699https://www.catalog.update.microsoft.com/Search.aspx?q=50736992026-01 Security Only Quality Update for Windows Server 2008 R2 for x64-based Systems (KB5073699)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesImportantWindows Server 2008 R2
KB5073031https://support.microsoft.com/help/5073031https://www.catalog.update.microsoft.com/Search.aspx?q=5073031Security Update for SQL Server 2022 RTM GDR (KB5073031)Security issues have been identified in the SQL Server 2022 RTM GDR that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2022
KB5073177https://support.microsoft.com/help/5073177https://www.catalog.update.microsoft.com/Search.aspx?q=5073177Security Update for SQL Server 2025 RTM GDR (KB5073177)Security issues have been identified in the SQL Server 2025 RTM GDR that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2025
KB5072936https://support.microsoft.com/help/5072936https://www.catalog.update.microsoft.com/Search.aspx?q=5072936Security Update for SQL Server 2022 RTM CU (KB5072936)Security issues have been identified in the SQL Server 2022 RTM CU that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2022
KB5002825https://support.microsoft.com/help/5002825https://www.catalog.update.microsoft.com/Search.aspx?q=5002825Security Update for Microsoft SharePoint Server 2019 Core (KB5002825)A security vulnerability exists in Microsoft SharePoint Server 2019 Coren/aSecurity UpdatesImportantSharePoint Server 2019/Office Online Server
KB5002826https://support.microsoft.com/help/5002826https://www.catalog.update.microsoft.com/Search.aspx?q=5002826Security Update for Microsoft Office 2016 (KB5002826) 64-Bit EditionA security vulnerability exists in Microsoft Office 2016 64-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability.n/aSecurity UpdatesImportantOffice 2016
KB5002826https://support.microsoft.com/help/5002826https://www.catalog.update.microsoft.com/Search.aspx?q=5002826Security Update for Microsoft Office 2016 (KB5002826) 32-Bit EditionA security vulnerability exists in Microsoft Office 2016 32-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability.n/aSecurity UpdatesImportantOffice 2016
KB5002828https://support.microsoft.com/help/5002828https://www.catalog.update.microsoft.com/Search.aspx?q=5002828Security Update for Microsoft SharePoint Enterprise Server 2016 (KB5002828)A security vulnerability exists in Microsoft SharePoint Enterprise Server 2016n/aSecurity UpdatesImportantOffice 2016
KB5002822https://support.microsoft.com/help/5002822https://www.catalog.update.microsoft.com/Search.aspx?q=5002822Security Update for Microsoft SharePoint Server Subscription Edition (KB5002822)A security vulnerability exists in Microsoft SharePoint Server Subscription Editionn/aSecurity UpdatesImportantSharePoint Server Subscription Edition
KB5002831https://support.microsoft.com/help/5002831https://www.catalog.update.microsoft.com/Search.aspx?q=5002831Security Update for Microsoft Excel 2016 (KB5002831) 32-Bit EditionA security vulnerability exists in Microsoft Excel 2016 32-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability.n/aSecurity UpdatesImportantOffice 2016
KB5002831https://support.microsoft.com/help/5002831https://www.catalog.update.microsoft.com/Search.aspx?q=5002831Security Update for Microsoft Excel 2016 (KB5002831) 64-Bit EditionA security vulnerability exists in Microsoft Excel 2016 64-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability.n/aSecurity UpdatesImportantOffice 2016
KB5002824https://support.microsoft.com/help/5002824https://www.catalog.update.microsoft.com/Search.aspx?q=5002824Security Update for Microsoft Office Online Server (KB5002824)A security vulnerability exists in Microsoft Office Online Servern/aSecurity UpdatesImportantSharePoint Server 2019/Office Online Server
KB5002827https://support.microsoft.com/help/5002827https://www.catalog.update.microsoft.com/Search.aspx?q=5002827Security Update for Microsoft SharePoint Enterprise Server 2016 (KB5002827)A security vulnerability exists in Microsoft SharePoint Enterprise Server 2016n/aSecurity UpdatesImportantOffice 2016
KB5002823https://support.microsoft.com/help/5002823https://www.catalog.update.microsoft.com/Search.aspx?q=5002823Security Update for Microsoft SharePoint Server 2019 Language Pack (KB5002823)A security vulnerability exists in Microsoft SharePoint Server 2019 Language Packn/aSecurity UpdatesImportantSharePoint Server 2019/Office Online Server
KB5002829https://support.microsoft.com/help/5002829https://www.catalog.update.microsoft.com/Search.aspx?q=5002829Security Update for Microsoft Word 2016 (KB5002829) 32-Bit EditionA security vulnerability exists in Microsoft Word 2016 32-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability.n/aSecurity UpdatesImportantOffice 2016
KB5002829https://support.microsoft.com/help/5002829https://www.catalog.update.microsoft.com/Search.aspx?q=5002829Security Update for Microsoft Word 2016 (KB5002829) 64-Bit EditionA security vulnerability exists in Microsoft Word 2016 64-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability.n/aSecurity UpdatesImportantOffice 2016

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