title: Storing license details
body: <p>I have a doubt in licensing. I am using C# application. 
  Scenario:
  User gets the license for the application through mail in the form of file. He/She stores the license file on the Desktop. Later, he/she chooses the license and click register. Now the application is registered (Licensed). 
  After some days, if user deletes the license file from Desktop. The application will stop working since there is no file. 
  I want to store the license details somewhere in registry or file (secret path). But 
  what if that user account doesn't have enough permission to read/write registry or file.
  Which is the good way? Do you guys know any other method?
  I am novice in this area. So please help me.</p>
  
  <p>Thanks in advance.</p>