Hi,
Windows Server 2019 x64 crashes during the normal usage, after the login.
I rebooted a few times.
The first time it crashed while I was trying to open Visual Studio.
The second time, it crashed while I was typing ipconfig /all in cmd.
The third time, it crashed while I was trying to update another program.
I tried to limit the cores of the CPU to 1, but it still crashed.
I'm using the legacy Virtual Box Graphic, 'cause with the new SVGA fails to refresh the screen (as already reported by another user).
https://forums.virtualbox.org/viewtopic.php?f=15&t=90719
Anyway, for what it's worth, I gave a shot to SVGA as well, but it crashed as well.
In attachment you'll find the logs.
The host is Fedora 29, the guest Windows Server 2019 x64.
For the records, I also have Windows XP x86 as guest in this machine and it works fine.
I don't know what's causing the issue.
Besides, 2D and 3D acceleration are disabled.
I don't know if someone has an ISO of WIndows Server 2019 and can reproduce it.