apptaro

@adhawkins No, if you try to shut down with the VirtualBox GUI still running, then you see the same issue only for some seconds, but the PC will shutdown normally...

Taken from here: https://doc.2cheren.com/virtualbox/ch12.html#idp15218336 > In some cases - such as when a virtual machine is terminated unexpectedly - the COM server will not notice that the client is disconnected...

For a note, I have fixed the issue temporarily by the methods below: Uninstall virtualbox completely and reinstall. Ref: https://dottech.org/101997/how-to-uninstall-virtualbox-drivers-on-windows/ Do the combination of below for several times: - change...

This is the content of VBoxSVC.log when shutting down: ``` 00:00:53.572014 Saving settings file "C:\Users\xxx\VirtualBox VMs\CentOS7\CentOS7.vbox" with version "1.15-windows" 00:00:53.776524 Watcher Saving settings file "C:\Users\xxx\VirtualBox VMs\CentOS7\CentOS7.vbox" with version "1.15-windows" 00:00:53.807777...

This may be related: https://www.virtualbox.org/ticket/15879

So it happens this issue occurs for 5.1, too, as described in the issue #22.