title: Connecting to Azure in Server Explorer gives me value cannot be null, Parameter name: accountKey
body: <p>Hoping someone can help me out here.  I'm trying to connect to my notification hubs within Azure.  I've always been able to do it fine, until today.  Now every time I try to connect it tells me that I have no subscription.  (Which I do).</p>
  
  <p>When I try to refresh the Notification Hubs portion is when I get the "value cannot be null" Parameter name: accountKey error.</p>
  
  <p>I've tried two of my working Azure subscriptions with the same result.
  I've tried restarting Visual Studio.
  I've tried restarting my machine.</p>
  
  <p>No luck.</p>
  
  <p>Please help!  I really need to connect to Azure from the IDE for Notification Hubs because its the only easy way I get a visual list of all my devices registered.</p>