windows-8 - ReasonPhrase: 'Forbidden' HttpResponseMessage winrt

Question

我在响应变量中收到此错误：ReasonPhrase: 'Forbidden'：

HttpClient httpClient = new HttpClient();
HttpResponseMessage response = await httpClient.GetAsync(uri);
string result = await response.Content.ReadAsStringAsync();

除了我将它与其他网址一起使用，它工作正常！请问有什么想法吗？