When you come home, you expect your garage door to open and close just as it always has in the past. However, you might come home one evening and find that it’s simply not working. You click the remote and nothing happens. It has a new battery, so that’s not the problem. It’s something else. However, it’s not a problem with your door opener remote. Instead, something has gone wrong with the programming of the LiftMaster or Chamberlain garage door opener, and this means you need to reprogram it.