Thank you.
Yes.
I just bought ESS so I never use it with older versions of VirtualBox. But I will test with some of them.
This problem does not have anything to do with the guest OS because, when the host OS starts, any VM is closed.
In my previous post I said it's "Windows XP SP3" (x86 it's not needed to be mentioned since only x86 has SP3, x64 has only SP2).
Just ESS. The one from Windows XP is deactivated.
No. Only removing ESS completely or disabling the VirtualBox Host-Only Network helps.
PM sent (with only the data from host OS not the guest, because, like I said, this problem does not have anything to do with the guest).
Later edit: I tested with a few older VirtualBox versions, no change.