Broken DNS after host loses power.

Discussions about using Windows guests in VirtualBox.
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cwlp
Posts: 1
Joined: 1. Jun 2018, 02:25

Broken DNS after host loses power.

Post by cwlp »

Virtual Box Version: 5.2.12
Host: Windows 10 64 Bit (Build 1803)
Guest: Windows 10 64 Bit (Build 1803)

Three times now I have had DNS completely break in a Windows 10 guest when the host lost power unexpectedly. Everything else works perfectly and you can ping the DNS server but it just can't resolve anymore.

I have tried every thing I can think including but not limited to restarting, renewing the ip config on the virtual adapter, flushing dns, re-registering dns, removing and replacing the virtual adapter in the guest settings, changing to a different adapter, rebuilding the IP stack on the guest.

The only way I can ever fix it is to back up my data from the guest, wipe and re-install everything which is an absolute PITA!

If anyone has experienced this problem on a guest vm or on a real computer and found a fix that works for them please reply.
socratis
Site Moderator
Posts: 27330
Joined: 22. Oct 2010, 11:03
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Win(*>98), Linux*, OSX>10.5
Location: Greece

Re: Broken DNS after host loses power.

Post by socratis »

Your post is thin on details. Like what's your network mode (HostOnly, NAT, NATservice, Bridged, Internal, etc.). Like your network setup. Like the output of "ipconfig -a" from both host and guest. Like who's your DNS server; is it your ISP's, a 3rd party? Who's doing the caching?

And I got to admit that powering everything down and the entries not being reset is something that I've never heard of. I won't even go to the fact that you have to re-install the OS, that's borderline science fiction, the Twilight Zone...
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