I lost internet on VM, what should I do?

Question

Computer networks

Guys, help. Installed on VirtualBox Windows Server 2012. Internet worked fine, no complaints. Connected to Active Directory. A couple of days passed, and the Internet abruptly disappeared. There are no connections created, in the "big brother" I checked the network, it does not transmit data packets at all, I did not change the settings, I left everything as it is, tk. there was no need for change. In general, there is nothing. How to be?

Answer 1

show intuition on a toaster?
is there internet in the host machine? if yes - see what you screwed up with a virtual adapter or in the guest OS, if not - then see what you have with the Internet.