title: UnauthorizedAccessException during storageFolder.CreateFileAsync
body: <p>I have the following piece of code</p>
  
  <pre><code>    // Point to c:\users\yancheng\documents\visual studio 2012\Projects\App5\App5\bin\x86\Debug\AppX
      StorageFolder storageFolder = Windows.ApplicationModel.Package.Current.InstalledLocation;
  
      StorageFile file = await storageFolder.CreateFileAsync("1000.txt");
  
      if (file != null)
      {
          using (IRandomAccessStream writeStream = await file.OpenAsync(FileAccessMode.ReadWrite))
          {
              using (DataWriter dataWriter = new DataWriter(writeStream))
              {
                  dataWriter.WriteInt32(1000);
              }
          }
      }
  </code></pre>
  
  <p>I have enabled all permission through <code>Package.appxmanifest</code>. However, I am not sure why I am still getting <code>UnauthorizedAccessException</code> during <code>storageFolder.CreateFileAsync</code>.</p>
  
  <p>Any other things I had missed out?</p>