I add some information about this behavior.
The discussion about this behavior are in this topics:
It seems AVP couldn't do system reboot after done a Advanced Disinfection because malware pre-execute following system command to setup a system shutdown scheduled task for turning off OS.
shutdown -s -t 2000 -c 0
In order to avoid this problem, Can you execute the following command before executing the restart command to cancel all shutdown scheduled task at the end of advanced disinfection process.
If need some additional information, Please let us know.