Forum Discussion
SPMSFT
Apr 26, 2025Copper Contributor
Turning on Windows Sandbox feature hangs
I just got a new Dell machine with Windows 11 Pro installed on it. I wanted use the machine with Virtual Machines as well as Windows Sandbox feature. When I enable Hyper-V feature, the reboot works f...
KMBakPL
Dec 18, 2025Occasional Reader
Same problem.
My Windows Sandbox works perfect. But recently after start get strange "vmmemcmfirstboot" process memory and CPU usage. I disabled Hyper-V, Windows Hypervisor Platform, Virtual Machine Platform, Windows Sandbox and it helps but now I cant enable it again. Windows Sandbox stuck at 100%.
Have you finad any solution?