Windows Sandbox is a new lightweight desktop environment tailored for safely running applications in isolation.
How many times have you downloaded an executable file, but were afraid to run it?...
Updated Dec 12, 2022
Version 11.0
Blog Post
So everyone asking about logs, check out the Microsoft-Windows-Hyper-V-Compute/Operational event log in Event Viewer. That's where you'll see the container being created and things like memory and GPU settings being set.
I was experiencing the same problem as others. I'd get the splash screen for a few seconds and then it would die with no error message of any kind. After checking out the events in the log, I saw that the virtual environment was failing when setting the GPU settings ("Modify compute system, settings '{"ResourcePath":"VirtualMachine/ComputeTopology/Gpu","RequestType":"Update","Settings":{"AssignmentMode":"Mirror"}}', result 0x80070032") You can see the "result" code in that message is not 0x00000000, which would be a success code. So I knew my failures were related to my GPU.
I have an older Lenovo W540 laptop and it comes with two display adapters, Intel HD Graphics 4600 and Nvidia Quadro K1100M. On a whim, I disabled the Nvidia display adapter in Device Manager so that only the Intel adapter would be active. Then I launched Sandbox again and it worked perfectly. In fact, I'm typing this entire comment from within my sandbox.
I don't know exactly why this is happening. I can only guess that either the sandbox gets confused by the presence of two adapters, or my Nvidia card/driver combo doesn't support this setup. I'm going to file a bug for this, but figured I'd leave this info here in case anyone else had a similar setup.
Matt