<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>It seems vbox has some conflicts with Windows 8.1 wireless display.</div><div><br></div><div style="color: rgb(0, 0, 0); font-size: 16.363636016845703px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;">Without vbox, you can swipe from right side of desktop to bring up Devices Charm, then Devices > Project, you should see an option to Add a display, ...</div><div style="color: rgb(0, 0, 0); font-size: 16.363636016845703px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 16.363636016845703px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;">With vbox installed, if you do same, you won't
see "Add a display" menu item, it goes directly to Projected to a second screen, skipping the wireless display page.</div></div></body></html>