A quick post for others that might experience this same problem. Last night Windows 10, with its forced updates, provided me with the big update we've all been waiting for. As I awake, ready to go to work on Drupal 8 upgrades, I tried to start my Vagrant and jump right in. Suddenly I was hit with an error about the connection being in use. Quickly I opened VirtualBox and upgraded that. Once that updated, along with the extension pack, the error still persisted. Trying to open the boxes right from VirtualBox gave me a few more details about the error, but not much more.