Please follow the steps below:
Step 1.
While in VR, click on the Menu button, then click Exit Game.
Step 2.
Alternatively, press the Oculus Home button, then click on Exit to Home. Please wait a few seconds to return to the Arcade main menu.
NOTE: while in the Arcade main menu (or virtual lobby), please avoid pushing the Oculus Home button. This will trigger the restart of the launcher.