How to soft-restart Windows Server 10 Technical Preview (renamed Insider Preview)?
Solution 1:
C:\> shutdown.exe /soft /r /t 0
For a "soft" reboot. The /t 0 simply means "do it immediately (0-second delay.)"
You will also find the Powershell equivalent is:
Restart-Computer -Soft
But of course, the -Soft parameter is not documented yet, because tech preview.