Only that virtual machine restarted? No other virtual machine running on the same host restarted? Did you check the status of the host where the virtual machine was running?---
Senior Infrastructure Specialist
There were other Servers as well on the other Host that got Auto-Rebooted by vSphere HA.
difficult to say without any logs / details / context. If you really want to know contact support. the FDM.log should provide all the details you need. I would be surprised if it took 4 days to responds. I suspect something else happened right before this reboot. but without all the logs it is difficult to say what caused this.