title: How come my Azure timer function app stops firing
body: <p>I have an Azure timer function app that fires every five minutes</p>
  <p>I have found this very hit and miss after deploying.  It either starts firing or it doesn't.  It if doesn't fire then no matter what I do I cannot seem to get it to fire.</p>
  <p>I have tried restarting and refreshing the function in the portal</p>
  <p>It is running on a S1 App service plan (that also has three other func apps on it)</p>
  <p>My timer cron expression is * */5 * * *</p>