Description of the security update for SharePoint Server 2019: May 12, 2026 (KB5002870)

Description of the security update for SharePoint Server 2019: May 12, 2026 KB5002870 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 currently...

Description of the security update for SharePoint Server Subscription Edition: May 12, 2026 (KB5002863)

Description of the security update for SharePoint Server Subscription Edition: May 12, 2026 KB5002863 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 you'r...

Description of the security update for SharePoint Server 2016: May 12, 2026 (KB5002868)

Description of the security update for SharePoint Server 2016: May 12, 2026 KB5002868 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 currently...

May 26, 2026-KB5092430 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2

May 26, 2026-KB5092430 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 Release Date: May 26, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 26, 2026 update for Windows 11, version 24H2 includes security and cumulative reliability improvements in .NET...

May 26, 2026—KB5089570 (OS Build 28000.2179) Preview

May 26, 2026—KB5089570 OS Build 28000.2179 Preview ​​​​This cumulative update for Windows 11, version 26H1 KB5083806, includes production-quality improvements. Visit the Windows release health dashboard for the latest status on this release. Highlights This update is available through two release...

May 26, 2026—KB5089573 (OS Builds 26200.8524 and 26100.8524) Preview

May 26, 2026—KB5089573 OS Builds 26200.8524 and 26100.8524 Preview ​​​​This cumulative update for Windows 11, version 25H2 and 24H2 KB5089573, includes production-quality improvements. Visit the Windows release health dashboard for the latest status on this release. Announcements and messages Thi...

May 26, 2026-KB5092427 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2

May 26, 2026-KB5092427 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 Release Date: May 26, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 26, 2026 update for Windows 11, version 25H2 includes security and cumulative reliability improvements in .NET...

Security update 2026-05-14

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Security update 2026-05-14

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Security update 2026-05-14

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Security update 2026-05-14

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Description of the security update for SharePoint Server 2019 Language Pack: May 12, 2026 (KB5002872)

Description of the security update for SharePoint Server 2019 Language Pack: May 12, 2026 KB5002872 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: May 12, 2026 (KB5002869)

Description of the security update for SharePoint Server 2016 Language Pack: May 12, 2026 KB5002869 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...

.NET 8.0 Update - May 12, 2026

.NET 8.0 Update - May 12, 2026 .NET 8.0 has been refreshed with the latest update as of May 12, 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 the previous...

KB5090354 - Description of the security update for SQL Server 2017 CU31: May 12, 2026

KB5090354 - Description of the security update for SQL Server 2017 CU31: May 12, 2026 Summary Known issues in this update Improvements and fixes included in this update How to obtain and install the update More information File information Information about protection and security Summary This...

KB5089899 - Description of the security update for SQL Server 2025 CU4: May 12, 2026

KB5089899 - Description of the security update for SQL Server 2025 CU4: May 12, 2026 Applies To SQL Server 2025 on Windows all editions, SQL Server 2025 on Linux all editions Summary Known issues in this update Improvements and fixes included in this update How to obtain and install the update Ho...

May 12, 2026—KB5087537 (OS Build 14393.9140)

May 12, 2026—KB5087537 OS Build 14393.9140 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 if not updated in...

May 12, 2026-KB5087065 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016

May 12, 2026-KB5087065 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016 Release Date: May 12, 2026 Version: .NET Framework 4.8 The May 12, 2026 update for Windows 10, version 1607 and Windows Server 2016 includes security and cumulative reliability...

May 12, 2026-KB5087059 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows Server 2022

May 12, 2026-KB5087059 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows Server 2022 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 12, 2026 update for Windows Server 2022 includes security and cumulative reliability improvements in .NET Framework 3.5 and...

May 12, 2026-KB5087053 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 and Windows 10 Version 22H2

May 12, 2026-KB5087053 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 and Windows 10 Version 22H2 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 12, 2026 update for Windows 10 Version 21H2 and Windows 10 Version 22H2 includes security and...

May 12, 2026—KB5087471 (Monthly Rollup)

May 12, 2026—KB5087471 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 only a...

May 12, 2026—KB5087420 (OS Build 22631.7079)

May 12, 2026—KB5087420 OS Build 22631.7079 ​​​​​This cumulative update for Windows 11, version 23H2 KB5087420, 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,...

May 12, 2026-KB5087058 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2

May 12, 2026-KB5087058 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 12, 2026 update for Windows 11, version 23H2 includes security and cumulative reliability improvements in .NET Framework...

May 12, 2026-KB5087051 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 and Microsoft server operating system 24H2

May 12, 2026-KB5087051 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 and Microsoft server operating system 24H2 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 12, 2026 update for Windows 11, version 25H2 and Microsoft server operating...

Update 27.6 for Microsoft Dynamics 365 Business Central 2025 Release Wave 2 (Application Build 27.6.48260, Platform Build 27.0.48102)

Update 27.6 for Microsoft Dynamics 365 Business Central 2025 Release Wave 2 Application Build 27.6.48260, Platform Build 27.0.48102 Overview This update replaces previously released updates. You should always install the latest update.After you install this hotfix, you might have to update your...

May 12, 2026—Hotpatch KB5087423 (OS Build 26100.32772)

May 12, 2026—Hotpatch KB5087423 OS Build 26100.32772 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 innovatio...

Service Update 1.44 for Microsoft Dynamics CRM (on-premises) 9.1

Service Update 1.44 for Microsoft Dynamics CRM on-premises 9.1 Introduction Service Update 9.1.44 for Microsoft Dynamics CRM on-premises 9.1 is now available. This article describes the hotfixes and updates that are included in Service Update 9.1.44.15 More information Update package| Version...

KB5089900 - Description of the security update for SQL Server 2022 CU24: May 12, 2026

KB5089900 - Description of the security update for SQL Server 2022 CU24: May 12, 2026 Summary Known issues in this update 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...

May 12, 2026—KB5089548 (OS Build 28000.2113)

May 12, 2026—KB5089548 OS Build 28000.2113 ​​​​​This cumulative update for Windows 11, version 26H1 KB5089548 includes the latest security fixes and improvements, along with non-security updates from last month's optional preview release. Visit the Windows release health dashboard for the latest...

May 12, 2026-KB5087068 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2022

May 12, 2026-KB5087068 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2022 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.8 The May 12, 2026 update for Windows Server 2022 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8. W...

May 12, 2026-KB5087061 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10, version 1809 and Windows Server 2019

May 12, 2026-KB5087061 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10, version 1809 and Windows Server 2019 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.7.2 The May 12, 2026 update for Windows 10, version 1809 and Windows Server 2019 includes security and...

May 12, 2026-Security and Quality Rollup for .NET Framework 3.5 for Windows Server 2012 R2 (KB5087049)

May 12, 2026-Security and Quality Rollup for .NET Framework 3.5 for Windows Server 2012 R2 KB5087049 Applies to: Microsoft .NET Framework 3.5 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 Window...

May 12, 2026-Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2012 (KB5087062)

May 12, 2026-Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2012 KB5087062 Applies to: Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framework 4.7.2 Important The installation of this Extended...

Update 25.18 for Microsoft Dynamics 365 Business Central 2024 Release Wave 2 (Application Build 25.18.48229, Platform Build 25.2.48119)

Update 25.18 for Microsoft Dynamics 365 Business Central 2024 Release Wave 2 Application Build 25.18.48229, Platform Build 25.2.48119 Overview This update replaces previously released updates. You should always install the latest update.After you install this hotfix, you might have to update your...

March 10, 2026—Hotpatch KB5078737 (OS Build 20348.4830)

March 10, 2026—Hotpatch KB5078737 OS Build 20348.4830 This Hotpatch update for Windows Server 2022 KB5078737, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview updates, out-of-band OOB updates, and...

May 12, 2026—Hotpatch KB5089466 (OS Builds 26200.8390 and 26100.8390)

May 12, 2026—Hotpatch KB5089466 OS Builds 26200.8390 and 26100.8390 This Hotpatch update for Windows 11, version 25H2 and 24H2 KB5089466 includes security improvements. To learn more about differences between security updates, optional non-security preview updates, out-of-band OOB updates, and...

May 12, 2026—KB5089549 (OS Builds 26200.8457 and 26100.8457)

May 12, 2026—KB5089549 OS Builds 26200.8457 and 26100.8457 This cumulative update for Windows 11, version 25H2 and 24H2 KB5089549 includes the latest security fixes and improvements, along with non-security updates from last month's optional preview release.Visit the Windows release health...

May 12, 2026—KB5087544 (OS Builds 19045.7291 and 19044.7291)

May 12, 2026—KB5087544 OS Builds 19045.7291 and 19044.7291 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...

May 12, 2026—KB5087539(OS Build 26100.32860)

May 12, 2026—KB5087539OS Build 26100.32860 ​​​​​This cumulative update for Windows Server 2025 KB5087539 , 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,...

May 12, 2026—KB5087538 (OS Build 17763.8755)

May 12, 2026—KB5087538 OS Build 17763.8755 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 if not updated in...

May 12, 2026-KB5087055 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1

May 12, 2026-KB5087055 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1 Release Date: May 12, 2026 Version: .NET Framework 4.8.1 The May 12, 2026 update for Windows 11, version 26H1 includes security and cumulative reliability improvements in .NET Framework 4.8.1. We...

Update 28.1 for Microsoft Dynamics 365 Business Central 2026 Release Wave 1 (Application Build 28.1.49886, Platform Build 28.0.49873)

Update 28.1 for Microsoft Dynamics 365 Business Central 2026 Release Wave 1 Application Build 28.1.49886, Platform Build 28.0.49873 Overview This update replaces previously released updates. You should always install the latest update.After you install this hotfix, you might have to update your...

.NET 9.0 Update - May 12, 2026

.NET 9.0 Update - May 12, 2026 .NET 9.0 has been refreshed with the latest update as of May 12, 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 the previous...

.NET 10.0 Update - May 12, 2026

.NET 10.0 Update - May 12, 2026 .NET 10.0 has been refreshed with the latest update as of May 12, 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 remove the...

KB5089271 - Description of the security update for SQL Server 2016 SP3 GDR: May 12, 2026

KB5089271 - Description of the security update for SQL Server 2016 SP3 GDR: May 12, 2026 Summary Known issues in this update Improvements and fixes included in this update How to obtain and install the update More information File information Information about protection and security Summary This...

May 12, 2026-KB5087054 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2

May 12, 2026-KB5087054 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 12, 2026 update for Windows 11, version 24H2 includes security and cumulative reliability improvements in .NET Framework...

May 12, 2026—Hotpatch KB5087424 (OS Build 20348.5074)

May 12, 2026—Hotpatch KB5087424 OS Build 20348.5074 This Hotpatch update for Windows Server 2022 KB5087424 includes security improvements. To learn more about differences between security updates, optional non-security preview updates, out-of-band OOB updates, and continuous innovation, see Windo...

May 12, 2026—KB5087470 (Monthly Rollup)

May 12, 2026—KB5087470 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 are...

Description of the security update for Office 2016: May 12, 2026 (KB5002866)

Description of the security update for Office 2016: May 12, 2026 KB5002866 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...

Security update 2026-05-12

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