title: After installed visual studio 2013 update 3, it asks me license key
body: <p>I am an MSDN subscriber user, my Viusal Studio 2013 with update 2 was working perfectly. Today I installed update 3, when I restart Visual Studio, it asks me license key:</p>
  
  <p><img src="https://i.stack.imgur.com/jEZIZ.png" alt="enter image description here"></p>
  
  <p>How could I get rid of this? or how can I get a new key from MSDN?</p>