October 14, 2025-KB5066133 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 and Windows 11, version 23H2

October 14, 2025-KB5066133 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 and Windows 11, version 23H2 Applies To .NET Note Release Date: October 14, 2025 Version: .NET Framework 3.5 and 4.8.1 The October 14, 2025 update for Windows 11, version 22H2 and Windows 11...

October 14, 2025-KB5066129 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system, version 23H2

October 14, 2025-KB5066129 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system, version 23H2 Applies To .NET Note Release Date: October 14, 2025 Version: .NET Framework 3.5 and 4.8.1 The October 14, 2025 update for Microsoft server operating system, version 23...

October 14, 2025-KB5066128 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2

October 14, 2025-KB5066128 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 Applies To .NET Note Release Date: October 14, 2025 Version: .NET Framework 3.5 and 4.8.1 The October 14, 2025 update for Windows 11, version 25H2 includes security and cumulative reliabilit...

October 14, 2025-KB5066131 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 and Microsoft server operating system version 24H2

October 14, 2025-KB5066131 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 and Microsoft server operating system version 24H2 Applies To .NET Note Release Date: October 14, 2025 Version: .NET Framework 3.5 and 4.8.1 The October 14, 2025 update for Windows 11, versi...

October 23, 2025—KB5070887 (Monthly Rollup) Out-of-band

October 23, 2025—KB5070887 Monthly Rollup Out-of-band Applies To Windows Server 2012 ESU 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...

October 23, 2025—KB5070886 (Monthly Rollup) Out-of-band

October 23, 2025—KB5070886 Monthly Rollup Out-of-band Applies To Windows Server 2012 R2 ESU 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,...

October 23, 2025—KB5070884 (OS Build 20348.4297) Out-of-band

October 23, 2025—KB5070884 OS Build 20348.4297 Out-of-band Applies To Windows Server 2022 Windows Secure Boot certificate expiration Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and business devices to...

October 23, 2025—KB5070883 (OS Build 17763.7922) Out-of-band

October 23, 2025—KB5070883 OS Build 17763.7922 Out-of-band Applies To Windows Server 2019 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and business...

October 23, 2025—KB5070882 (OS Build 14393.8524) Out-of-band

October 23, 2025—KB5070882 OS Build 14393.8524 Out-of-band Applies To Windows Server 2016, all editions Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal...

October 24, 2025—KB5070893 (OS Build 26100.6905) Security Update for Windows Server Update Services

October 24, 2025—KB5070893 OS Build 26100.6905 Security Update for Windows Server Update Services Applies To Windows Server 2025 Datacenter: Azure Edition Note Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices are set to expire starting in...

October 23, 2025—KB5070881 (OS Build 26100.6905) Out-of-band

October 23, 2025—KB5070881 OS Build 26100.6905 Out-of-band Applies To Windows Server 2025, all editions Windows Secure Boot certificate expiration Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and busine...

October 23, 2025—KB5070879 (OS Build 25398.1916) Out-of-band

October 23, 2025—KB5070879 OS Build 25398.1916 Out-of-band Applies To Windows Server, version 23H2 Windows Secure Boot certificate expiration Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and business...

October 24, 2025—KB5070892 (OS Build 20348.4297) Security Update for Windows Server Update Services

October 24, 2025—KB5070892 OS Build 20348.4297 Security Update for Windows Server Update Services Applies To Windows Server 2022 Datacenter: Azure Edition Note Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices are set to expire starting in...

September 9, 2025—KB5065425 (OS Build 25398.1849)

September 9, 2025—KB5065425 OS Build 25398.1849 Applies To Windows Server, version 23H2 Windows Secure Boot certificate expiration Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and business devices to bo...

September 9, 2025—KB5065428 (OS Build 17763.7792)

September 9, 2025—KB5065428 OS Build 17763.7792 Applies To Windows 10 Enterprise, version 1809 Windows Server 2019 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certa...

September 9, 2025—KB5065426 (OS Build 26100.6584) for Windows

September 9, 2025—KB5065426 OS Build 26100.6584 for Windows Applies To Windows 11 version 24H2, all editions Windows Secure Boot certificate expiration Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and...

October 14, 2025—KB5066872 (Monthly Rollup)

October 14, 2025—KB5066872 Monthly Rollup Applies To Windows Server 2008 R2 Premium Assurance Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and...

October 14, 2025—KB5066873 (Monthly Rollup)

October 14, 2025—KB5066873 Monthly Rollup Applies To Windows Server 2012 R2 ESU 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...

KB5066840: Cumulative security update for Internet Explorer: October 14, 2025

KB5066840: Cumulative security update for Internet Explorer: October 14, 2025 Applies To Windows Server 2008 Premium Assurance Windows Server 2008 R2 Premium Assurance Windows Server 2012 ESU Windows Server 2012 R2 ESU Note Important Certain versions of Microsoft Internet Explorer have reached th...

Description of the security update for SharePoint Server 2016: October 14, 2025 (KB5002788)

Description of the security update for SharePoint Server 2016: October 14, 2025 KB5002788 Applies To SharePoint Server 2016 Summary Important If you're running 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 Language Pack: October 14, 2025 (KB5002787)

Description of the security update for SharePoint Server 2016 Language Pack: October 14, 2025 KB5002787 Applies To SharePoint Server 2016 Summary Important If you're running Microsoft SharePoint Server 2013-type workflows, you must install the August 2025 update for SharePoint Workflow Manager to...

Description of the security update for Office 2016: October 14, 2025 (KB5002757)

Description of the security update for Office 2016: October 14, 2025 KB5002757 Applies To Office Standard 2016 Office Professional 2016 Office Professional Plus 2016 Office Home and Business 2016 Office Home and Student 2016 Summary This security update resolves a Microsoft Excel information...

Description of the security update for SharePoint Server 2019 Language Pack: October 14, 2025 (KB5002798)

Description of the security update for SharePoint Server 2019 Language Pack: October 14, 2025 KB5002798 Applies To SharePoint Server 2019 Summary Important If you're running 2013-type workflows, you must install the August 2025 update for SharePoint Workflow Manager to your farm before you instal...

Description of the security update for SharePoint Server 2019: October 14, 2025 (KB5002796)

Description of the security update for SharePoint Server 2019: October 14, 2025 KB5002796 Applies To SharePoint Server 2019 Summary Important If you're running 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 Office Online Server: October 14, 2025 (KB5002797)

Description of the security update for Office Online Server: October 14, 2025 KB5002797 Applies To Office Online Server Summary This security update resolves a Microsoft Excel information disclosure vulnerability, Microsoft Excel remote code execution vulnerability, Microsoft Excel remote code...

Description of the security update for PowerPoint 2016: October 14, 2025 (KB5002790)

Description of the security update for PowerPoint 2016: October 14, 2025 KB5002790 Applies To PowerPoint 2016 Summary This security update resolves a Microsoft PowerPoint remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures...

Description of the security update for SharePoint Server Subscription Edition: October 14, 2025 (KB5002786)

Description of the security update for SharePoint Server Subscription Edition: October 14, 2025 KB5002786 Applies To SharePoint Server Subscription Edition Summary Important If you're running 2013-type workflows, you must install the August 2025 update for SharePoint Workflow Manager to your farm...

End of support for Office 2016 and Office 2019

End of support for Office 2016 and Office 2019 Applies To Office 2019 Office 2016 Get help with Copilot Tell me about end of support for Office 2016 for Mac. Show me how to remove the conflicting 2013 app. Support for Office 2016 and Office 2019 ended on October 14, 2025. While your Office 2016 a...

Description of the security update for Office 2016: October 14, 2025 (KB5002792)

Description of the security update for Office 2016: October 14, 2025 KB5002792 Applies To Office Professional Plus 2016 Office Professional 2016 Office Standard 2016 Office Home and Business 2016 Office Home and Student 2016 Summary This security update resolves a Microsoft Office remote code...

Description of the security update for Excel 2016: October 14, 2025 (KB5002794)

Description of the security update for Excel 2016: October 14, 2025 KB5002794 Applies To Excel 2016 Summary This security update resolves Microsoft Excel Information Disclosure Vulnerability and Microsoft Excel Remote Code Execution Vulnerability. To learn more about the vulnerabilities, see the...

Description of the security update for Office 2016: October 14, 2025 (KB5002719)

Description of the security update for Office 2016: October 14, 2025 KB5002719 Applies To Office Standard 2016 Office Professional 2016 Office Professional Plus 2016 Office Home and Business 2016 Office Home and Student 2016 Summary This security update resolves a Microsoft Office Visio Remote Co...

Description of the security update for Access 2016: October 14, 2025 (KB5002720)

Description of the security update for Access 2016: October 14, 2025 KB5002720 Applies To Access 2016 Summary This security update resolves a Microsoft Office remote code execution vulnerability. To learn more about the vulnerability, see the following security advisories: Microsoft Common...

Description of the security update for Office 2016: October 14, 2025 (KB5002341)

Description of the security update for Office 2016: October 14, 2025 KB5002341 Applies To Office Standard 2016 Office Professional 2016 Office Professional Plus 2016 Office Home and Student 2016 Office Home and Business 2016 Summary This security update resolves a Microsoft Office remote code...

October 14, 2025-Security Only Update for .NET Framework 2.0, 3.0, 3.5 SP1, 4.6.2 for Windows Server 2008 SP2 (KB5066749)

October 14, 2025-Security Only Update for .NET Framework 2.0, 3.0, 3.5 SP1, 4.6.2 for Windows Server 2008 SP2 KB5066749 Applies To .NET Note Applies to: Microsoft .NET Framework 2.0 Microsoft .NET Framework 3.0 Microsoft .NET Framework 3.5 SP1 Microsoft .NET Framework 4.6.2 Summary Note Note...

October 14, 2025-Security Only Update for .NET Framework 3.5.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2008 R2 SP1 (KB5066748)

October 14, 2025-Security Only Update for .NET Framework 3.5.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2008 R2 SP1 KB5066748 Applies To .NET Note Applies to: Microsoft .NET Framework 3.5.1 Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microso...

KB5066795: Servicing stack update for Windows Server 2012: October 14, 2025

KB5066795: Servicing stack update for Windows Server 2012: October 14, 2025 Applies To Windows Server 2012 ESU Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain...

KB5066794: Servicing stack update for Windows Server 2012 R2: October 14, 2025

KB5066794: Servicing stack update for Windows Server 2012 R2: October 14, 2025 Applies To Windows Server 2012 R2 ESU Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of...

KB5066584: Servicing stack update for Windows 10, version 1607 and Windows Server 2016: October 14, 2025

KB5066584: Servicing stack update for Windows 10, version 1607 and Windows Server 2016: October 14, 2025 Applies To Windows 10, version 1607, all editions Windows Server 2016 Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started...

Support for Windows Server 2016 will end in January 2027

Support for Windows Server 2016 will end in January 2027 We recommend upgrading to the latest version of Windows Server. Running the latest version of Windows Server allows you to use the latest features – including the latest security features – and delivers the best performance. To learn more...

Office suites for enterprise, business, education, and government

Office suites for enterprise, business, education, and government Applies To Excel 2024 Word 2024 Outlook 2024 PowerPoint 2024 Access 2024 Project Professional 2024 Project Standard 2024 Visio Professional 2024 Visio Standard 2024 Office 2024 Excel 2024 for Mac Word 2024 for Mac Outlook 2024 for...

September 29, 2025—KB5065789 (OS Builds 26200.6725 and 26100.6725) Preview

September 29, 2025—KB5065789 OS Builds 26200.6725 and 26100.6725 Preview Applies To Windows 11 version 25H2, all editions Windows 11 version 24H2, all editions Windows Secure Boot certificate expiration Secure Boot certificates used by most Windows devices have started expiring in June 2026. This...

September 25, 2025—KB5066198 (OS Build 19045.6396) Preview

September 25, 2025—KB5066198 OS Build 19045.6396 Preview Applies To Windows 10 Home and Pro, version 22H2 Windows 10 Enterprise Multi-Session, version 22H2 Windows 10 Enterprise and Education, version 22H2 Windows 10 IoT Enterprise, version 22H2 Windows Secure Boot certificate expiration Importan...

September 23, 2025—KB5065790 (OS Build 22631.5984) Preview

September 23, 2025—KB5065790 OS Build 22631.5984 Preview Applies To Windows 11 version 23H2, all editions Windows Secure Boot certificate expiration Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and...

September 22, 2025—KB5068221 (OS Build 26100.6588) Out-of-band

September 22, 2025—KB5068221 OS Build 26100.6588 Out-of-band Applies To Windows 11 version 24H2, all editions Windows Secure Boot certificate expiration Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and...

KB5065865 - Cumulative Update 21 for SQL Server 2022

KB5065865 - Cumulative Update 21 for SQL Server 2022 Release Date: September 11, 2025 Version: 16.0.4215.2 Summary This article describes Cumulative Update package 21 CU21 for Microsoft SQL Server 2022. This update contains 17 fixes that were issued after the release of SQL Server 2022 Cumulative...

KB5065224 - Description of the security update for SQL Server 2017 GDR: September 9, 2025

KB5065224 - Description of the security update for SQL Server 2017 GDR: September 9, 2025 Applies To SQL Server 2017 on Windows SQL Server 2017 on Linux Summary Improvements and fixes included in this update How to obtain and install the update More information File information Information about...

KB5065223 - Description of the security update for SQL Server 2019 GDR: September 9, 2025

KB5065223 - Description of the security update for SQL Server 2019 GDR: September 9, 2025 Applies To SQL Server 2019 on Windows SQL Server 2019 on Linux Summary Improvements and fixes included in this update How to obtain and install the update More information File information Information about...

KB5065220 - Description of the security update for SQL Server 2022 CU20: September 9, 2025

KB5065220 - Description of the security update for SQL Server 2022 CU20: September 9, 2025 Applies To SQL Server 2022 on Windows all editions SQL Server 2022 on Linux all editions Summary Improvements and fixes included in this update How to obtain and install the update How to obtain or download...

KB5065222 - Description of the security update for SQL Server 2019 CU32: September 9, 2025

KB5065222 - Description of the security update for SQL Server 2019 CU32: September 9, 2025 Applies To SQL Server 2019 on Windows SQL Server 2019 on Linux Summary Improvements and fixes included in this update How to obtain and install the update How to obtain or download the latest cumulative...

KB5065221 - Description of the security update for SQL Server 2022 GDR: September 9, 2025

KB5065221 - Description of the security update for SQL Server 2022 GDR: September 9, 2025 Applies To SQL Server 2022 on Windows all editions SQL Server 2022 on Linux all editions Summary Improvements and fixes included in this update How to obtain and install the update More information File...