June 9, 2026—KB5094123 (OS Build 17763.8880)

June 9, 2026—KB5094123 OS Build 17763.8880 Summary This article lists the security issues and quality improvements included in this cumulative security update. Windows Server 2019Windows 10, version 1809 Applies to: Windows Server 2019This security update includes fixes and quality improvements...

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 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...