In addition to the Patch Tuesday updates, Microsoft is releasing Build 18362.53 to Insiders in the Fast, Slow, and Release Preview rings.
Build 18362.53 includes includes security updates that come as part of the normal monthly Patch Tuesday release cycle.
This update does include a known issue. After installing this update (KB4495666), users may experience error “0x800705b4” when launching Windows Defender Application Guard or Windows Sandbox. As a workaround, you can enable the following registry keys on the Host OS and reboot:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Containers\CmService\Policy] “DisableClone”=dword:00000001 “DisableSnapshot”=dword:00000001
You can learn more about new features in build 18362 by visiting the following link:
You might be interested in learning what's new in Windows 10 version 1903 "May 2019 Update". See the following post:
It covers all the changes introduced in the update.