.NET 9.0 Update - October 14, 2025 (KB5068332)

.NET 9.0 Update - October 14, 2025 KB5068332 .NET 9.0 has been refreshed with the latest update as of October 14, 2025. This update contains security and non-security fixes. See the release notes for details about updated packages..NET 9.0 servicing updates are upgrades. The latest servicing upda...

.NET 8.0 Update - October 14, 2025 (KB5068331)

.NET 8.0 Update - October 14, 2025 KB5068331 .NET 8.0 has been refreshed with the latest update as of October 14, 2025. This update contains security and non-security fixes. See the release notes for details about updated packages..NET 8.0 servicing updates are upgrades. The latest servicing upda...

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

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

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

October 23, 2025—KB5070879 OS Build 25398.1916 Out-of-band 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 device...

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

October 23, 2025—KB5070882 OS Build 14393.8524 Out-of-band 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 device...

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

October 23, 2025—KB5070884 OS Build 20348.4297 Out-of-band 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 device...

September 9, 2025—KB5065425 (OS Build 25398.1849)

September 9, 2025—KB5065425 OS Build 25398.1849 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...

September 9, 2025—KB5065426 (OS Build 26100.6584)

September 9, 2025—KB5065426 OS Build 26100.6584 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...

September 9, 2025—KB5065431 (OS Builds 22621.5909 and 22631.5909)

September 9, 2025—KB5065431 OS Builds 22621.5909 and 22631.5909 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...

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

October 23, 2025—KB5070881 OS Build 26100.6905 Out-of-band 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 device...

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

October 23, 2025—KB5070887 Monthly Rollup Out-of-band 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 f...

September 9, 2025—KB5065432 (OS Build 20348.4171)

September 9, 2025—KB5065432 OS Build 20348.4171 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...

September 9, 2025—Hotpatch KB5065306 (OS Build 20348.4106)

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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 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 reliability improvements in .NE...

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 Release Date: October 14, 2025 Version: .NET Framework 3.5 and 4.8.1 The October 14, 2025 update for Windows 11, version 24H2 and Microsoft...

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 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, version 23H2 includ...

October 14, 2025-Security and Quality Rollup 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 (KB5066739)

October 14, 2025-Security and Quality Rollup 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 KB5066739 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 Microsoft .NET...

October 14, 2025-Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 (KB5066740)

October 14, 2025-Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 KB5066740 Applies to: Microsoft .NET Framework 3.5 Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framework 4.7.2...

October 14, 2025-Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 R2 (KB5066741)

October 14, 2025-Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 R2 KB5066741 Applies to: Microsoft .NET Framework 3.5 Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framework 4.7....

October 14, 2025-Security and Quality Rollup for .NET Framework 2.0, 3.0, 3.5 SP1, 4.6.2 for Windows Server 2008 SP2 (KB5066742)

October 14, 2025-Security and Quality Rollup for .NET Framework 2.0, 3.0, 3.5 SP1, 4.6.2 for Windows Server 2008 SP2 KB5066742 Applies to: Microsoft .NET Framework 2.0 Microsoft .NET Framework 3.0 Microsoft .NET Framework 3.5 SP1 Microsoft .NET Framework 4.6.2 IMPORTANT This update is included in...

October 14, 2025—KB5066872 (Monthly Rollup)

October 14, 2025—KB5066872 Monthly Rollup 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 past...

October 14, 2025—KB5066875 (Monthly Rollup)

October 14, 2025—KB5066875 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...

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 Summary This security update resolves a Microsoft Excel information disclosure vulnerability, Microsoft Excel remote code execution vulnerability, Microsoft Excel remote code execution vulnerability. To learn...

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 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 SharePoint Server 2019: October 14, 2025 (KB5002796)

Description of the security update for SharePoint Server 2019: October 14, 2025 KB5002796 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 you're currently...

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

Description of the security update for Excel 2016: October 14, 2025 KB5002794 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 following security...

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

Description of the security update for Office 2016: October 14, 2025 KB5002792 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-2025-59227​​​​​​​​​ Note: To...

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

Description of the security update for PowerPoint 2016: October 14, 2025 KB5002790 Summary This security update resolves a Microsoft PowerPoint remote code execution vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2025-59238.​​​​​​​...

Description of the security update for Microsoft Exchange Server 2019 CU15: October 14, 2025 (KB5066367)

Description of the security update for Microsoft Exchange Server 2019 CU15: October 14, 2025 KB5066367 Original article content This security update rollup resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities an...

Description of the security update for Microsoft Exchange Server Subscription Edition RTM: October 14, 2025 (KB5066366)

Description of the security update for Microsoft Exchange Server Subscription Edition RTM: October 14, 2025 KB5066366 Original article content This security update rollup resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common...

Description of the security update for Microsoft Exchange Server 2016 CU23: October 14, 2025 (KB5066369)

Description of the security update for Microsoft Exchange Server 2016 CU23: October 14, 2025 KB5066369 Original article content This security update rollup resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities an...

September 9, 2025—KB5065429 (OS Builds 19044.6332 and 19045.6332)

September 9, 2025—KB5065429 OS Builds 19044.6332 and 19045.6332 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...

September 9, 2025—KB5065428 (OS Build 17763.7792)

September 9, 2025—KB5065428 OS Build 17763.7792 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...

October 14, 2025-KB5066738 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10, version 1809 and Windows Server 2019

October 14, 2025-KB5066738 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10, version 1809 and Windows Server 2019 Release Date: October 14, 2025 Version: .NET Framework 3.5, 4.7.2 and 4.8 Summary This article describes the security and cumulative update for 3.5, 4.7.2 and 4....

October 14, 2025-KB5066743 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows Server 2022

October 14, 2025-KB5066743 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows Server 2022 Release Date: October 14, 2025 Version: .NET Framework 3.5, 4.8 and 4.8.1 Summary This article describes the security and cumulative update for 3.5, 4.8 and 4.8.1 for Windows Server 2022...

October 14, 2025-KB5066746 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2

October 14, 2025-KB5066746 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 Release Date: October 14, 2025 Version: .NET Framework 3.5, 4.8 and 4.8.1 Summary This article describes the security and cumulative update for 3.5, 4.8 and 4.8.1 for Windows 10 Version...

September 9, 2025—Hotpatch KB5065474 (OS Build 26100.6508)

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October 14, 2025-KB5066136 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016

October 14, 2025-KB5066136 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016 Release Date: October 14, 2025 Version: .NET Framework 4.8 The October 14, 2025 update for Windows 10, version 1607 and Windows Server 2016 includes security and cumulative...

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 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 23H2 includes security...

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

Description of the security update for Office 2016: October 14, 2025 KB5002341 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-2025-59234. Note: To apply thi...

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

Description of the security update for Office 2016: October 14, 2025 KB5002757 Summary This security update resolves a Microsoft Excel information disclosure vulnerability. To learn more about the vulnerability, see the following security advisories: Microsoft Common Vulnerabilities and Exposures...

End of support for Office 2016 and Office 2019

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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 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 cumulative update.​​​​​​​ If you're...

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 Summary Important: If you're running Microsoft SharePoint Server 2013-type workflows, you mustinstall the August 2025 update for SharePoint Workflow Manager to your farm before you install this...

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 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 cumulative update. If...

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

Description of the security update for Access 2016: October 14, 2025 KB5002720 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 Vulnerabilities and Exposures...

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

Description of the security update for Office 2016: October 14, 2025 KB5002719 Summary This security update resolves a Microsoft Office Visio Remote Code Execution Vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2025-59226. ​​​​​​​ Note...

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

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

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 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 certificat...