I am setting up my previously working vagrant environment in Windows 10. I\'ve updated to the newest version of both VirtualBox (https://www.virtualbox.org/ticket/14040) and Vag
I had the same issue with Scotchbox, and even after installing the test build the issue was still there.
This is how I fixed the issue.
Step 1: Download and install https://www.virtualbox.org/attachment/ticket/14040/VBox-Win10-fix-14040.exe and leave it running in the background
Step 2: Head to the Virtual box program files ( C:\Program Files\Oracle\VirtualBox ).
Step 3: Go to compatibility for these three .exe ( Virtualbox.exe, VBoxHeadless.exe, and VBoxManage.exe ) and choose windows 7.
Then just run vagrant up again and it should work.