I have a Windows Server 2012 R2 Essentials which runs in Hyper-V on an HP Microserver (gen. 8) with host OS WS2012 R2. The guest VM is running a backup job every night to a physical pass through disk, but since about one month back in time it has begun freezing the system.
If I reboot the server the backup job runs as expected the first night, but the second night it gets stuck at "Backup in progress…" and a CPU load of almost 100%, same thing every time. :(
I can't find anything relevant in the event logs… What might be causing this trouble?