title: Error in call to API function "users/get_current_account": Must provide HTTP header "Authorization" or URL parameter "authorization"
body: <p>I dev on Dropbox API, using C# universal app.</p>
  
  <pre><code>public async Task&lt;string&gt; Httpclient(string link) {
      HttpClient client = new HttpClient();
      HttpResponseMessage response= await client.GetAsync(link);
      return await response.Content.ReadAsStringAsync();
  }
  
  public async Task&lt;Model.Get_Current_Account.RootObject&gt; get_current_account(string _accessToken) {
      var query = await mainViewModel.Httpclient("https://api.dropboxapi.com/2/users/get_current_account?access_token="+_accessToken);
      if (query != null) {
          var get_data = JsonConvert.DeserializeObject&lt;Model.Get_Current_Account.RootObject&gt;(query);
          return get_data;
      } else
          return null;
  }
  </code></pre>
  
  <p><code>var query</code> produces an error:</p>
  
  <blockquote>
    <p>Error in call to API function "users/get_current_account": Must provide HTTP header "Authorization" or URL parameter "authorization"</p>
  </blockquote>