Check Vault Connection Status in Revit
Check your connection status by hovering your mouse over the Log In or Log Out button on the Revit Vault Ribbon.
Note: The Log In/Log Out button is a toggle that indicates the action you can take and not your current status. For example, if you are logged into the Vault, the Log Out button shows, indicating that since you are logged in already, the only action you can take is to log out.