I have a clean Horizon 7.12 environment.  I have the desktops running and now I want to update the image.  I have done the snapshot and when I go to push the image I tell it Push image in 1 min, it's been over 30 and nothing is happening.  If I manuall select all the desktops I can force the reboot, but want to notify the users of the reboot.  Where should I start looking.