Internet doesn't work after changing MAC address

Discussions about using Windows guests in VirtualBox.
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hermansa8628
Posts: 1
Joined: 12. Jan 2020, 10:58

Internet doesn't work after changing MAC address

Post by hermansa8628 »

I installed Windows 7 on Virtualbox and then I tried to change MAC address using Technitium MAC address changer. Before changing MAC address internet works, after I change MAC address internet stop working. Anyone know how to fix this? Thanks.
mpack
Site Moderator
Posts: 39134
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: Internet doesn't work after changing MAC address

Post by mpack »

AFAIK there's no way to change the MAC address of a network card. It's burned into the ROM and globally unique. So, you'd have to find out how your "Technitium" tool fakes this, e.g. does it install a driver similar to VirtualBox's bridging driver (only inside the guest) - in which case uninstall it.

If you want to change the MAC address for some reason, change it in the VM settings. But sure you know what you are doing, because multiple devices with the same MAC will screw with a physical network too.
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