Hello and thank you for quick answer. Yes, I re-install Virtual Box about 10-15 times. Network virtual host adapter re-created with correct IP-address. In VBox settings I see that it's correct. But when I run VBox, it still has no IP-address.
But when I try to add new VirtualBox Host Only Ethernet Adapter in VB preferences, it generates an error. Maybe I need to change some system settings to allow creating new host-only network? Or change some keys in registry?