I have recently upgraded to Win 10 and hence to vagrant 1.7.4 and virtual box 5.0.2 r102096. While bringing one of the VM up using vagrant up, vagrant kept failing, but created new Host only adapters in the system on every attempt. Now I have 6 virtual host only adapters.
How do I remove the extraneous ones?
Open "Network connections" right click on the adapter you want delete and select properties. Under Networking -> click on configure. go to Driver tab on the popup and click on uninstall. This will remove it from the list.