id summary reporter owner description type status component version resolution keywords cc guest host 7971 Out of memory (Windows 7 64-bit host, Windows 7 64-bit guest) David Miller "Host: Win 7 64-bit, 8GB ram Guest: Win 7 64-bit, 2GB ram I left the guest running unattended for a while. When I got back, the Windows out-of-memory routine was running, and I had to shut down the guest. In the log file, it starts with this message: 00:18:43.194 AioMgr0-N: Request 0x000000926186b0 failed with rc=VERR_UNRESOLVED_ERROR, migrating endpoint T:\VirtualBox VMs\Armedia Work\Armedia Work.vdi to failsafe manager. Then I see hundreds of these: 02:44:29.244 ERROR [COM]: aRC=VBOX_E_IPRT_ERROR (0x80bb0005) aIID={09eed313-cd56-4d06-bd56-fac0f716b5dd} aComponent={Display} aText={Could not take a screenshot (VERR_TRY_AGAIN)}, preserve=false Then hundreds more of these: 03:00:26.416 ERROR [COM]: aRC=VBOX_E_IPRT_ERROR (0x80bb0005) aIID={09eed313-cd56-4d06-bd56-fac0f716b5dd} aComponent={Display} aText={Could not take a screenshot (VERR_NO_MEMORY)}, preserve=false Log file is attached. " defect closed VMM VirtualBox 4.0.0 fixed VERR_NO_MEMORY Windows Windows