Microsoft today pushed Windows 10 Build 18362.356 as cumulative update KB4515384 to those on the latest May 2019 update or on Windows 10 version 1903.
The changelog for the Build 18362.356 mentions many more fixes, improvements, and security updates. The latest update addresses an issue that displays a black screen when you use Remote Desktop to connect to a machine running Windows 10, version 1903.
Windows 10 Build 18362.356 Changelog:
Improvements and fixes
This security update includes quality improvements. Key changes include:
Provides protections against a new subclass of speculative execution side-channel vulnerabilities, known as Microarchitectural Data Sampling, for 32-Bit (x86) versions of Windows (CVE-2019-11091, CVE-2018-12126, CVE-2018-12127, CVE-2018-12130). Use the registry settings as described in the Windows Client and Windows Server articles. (These registry settings are enabled by default for Windows Client OS editions and Windows Server OS editions.)
Addresses an issue that causes high CPU usage from SearchUI.exe for a small number of users. This issue only occurs on devices that have disabled searching the web using Windows Desktop Search.
Security updates to Microsoft Edge, Internet Explorer, Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Input and Composition, Windows Media, Windows Fundamentals, Windows Authentication, Windows Cryptography, Windows Datacenter Networking, Windows Storage and Filesystems, Windows Wireless Networking, the Microsoft JET Database Engine, Windows Kernel, Windows Virtualization, and Windows Server.