Issue with SystemGuard Launch setting in Windows 10 v1809 and Windows Server 2019

[Update, 17 April 2019: Microsoft released a fix for this issue in the 2019-03 Cumulative Updates for Windows 10 Version 1809 and Windows Server 2019. See https://support.microsoft.com/kb/4490481 for more information.] Customers that deployed Microsoft’s security baseline for Windows 10 v1809 and Windows Server 2019 on systems with UEFI secure boot enabled might experience device boot…