I just upgraded my laptop from Windows 7 to Windows 10 and found that I am unable to start Virtualbox VMs configured with a bridged adapter.
See the configuration below:
As of now (5.2.20) bug is fixed. The only action required is to download the latest version and bridge mod should function normally.
Two line answer: For wired connections it will work smoothly, for wireless turn on 'Promiscious mode' if your wireless adapter does not support promiscious mode, here is the link to workaround. Also visit offical oracle virtualbox documentation to see more details here on using bridged connection over wifi.
WINDOWS FIX: Ive' Fixed it by downloading a new VMbox installer from the Official Website Here.
Dont worry about your VM's they will not disappear if you override your current installation.
NOTE: If you already have the latest version, you need to export all your VM's, unninstall your current VMBox and install it from new installer.
Virtual Box gives a lot of issues when it comes to bridge adaptor. I had the same issue with Virtual Box for windows 10. I decided to create VirtualBox Host-Only Ethernet adapter. But I again got issues while creating the host-only ethernet adaptor. I decided to switch to vmware. Vmware did not give me any issues. After installing vmware (and after changing few settings in the BIOS) and installing ubuntu on it, it automatically connected to my host machine's internet. It was able to generate it's own IP address as well and could also ping the host machine (windows machine). Hence, for me virtual box created a lot of issues whereas, vmware worked smoothly for me.
Install "vbox-ssl-cacertificate.crt" certificate from %userprofile%\\.virtualbox\
and then reboot. If you don't have .virtualbox
folder - launch "Oracle VM VirtualBox" once and this folder will appear.
I had this issue not only on my machine but on many hosts, and this certificate fixed the issue. I figured it out by chance, because nowhere said about this certificate -_-