Setting up a correct shutdown of guest Windows 2003 in qemu-kvm Linux

This is not an article, but simply a note for those who are faced with the problem of correct shutdown.
I do not pretend to originality, but the lecture collected in parts on the Internet has helped me, I hope it will help you.

1. Script for sending the guest OS shutdown signal

#!/bin/bash
CONNECT_STRING="qemu:///system"
for MACHINE in $(virsh -c "$CONNECT_STRING" list | awk '/running$/ {print
$2}') ; do
virsh -c "$CONNECT_STRING" shutdown $MACHINE
done
sleep 600

2. Configure the key in the OS registry
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Windows
')
ShutdownWarningDialogTimeout dword: 00000001

3. Change the local security policy
Control Pannel -> Admin tools -> Local security Policy
Local policies -> Security Options -> Shutdown: Allow system to be shutdown ...-> Enable

That's all.