I do not need a solution (just sharing information)
Please be advised that install either build 14279 or 14291 with SEP 12.1.6 MP4 or below will cause BSOD Unexpected Kernel Mode Trap during third boot of upgrade during configuring settings at 99%. Even if you remove SEP and install Windows 10 builds and then re-install SEP it will crash at login screen with BSOD Unexpected Kernel Mode Trap.
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