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请求失败。 远程服务器返回错误:(401)连接到Office365时出现未授权错误

[英]The request failed. The remote server returned an error: (401) Unauthorized error while connecting to Office365

连接到Office365时出现上述错误消息。

  ExchangeService serviceInstance = new ExchangeService(ExchangeVersion.Exchange2013_SP1);
  serviceInstance.Credentials = new WebCredentials("sample@microsoft.com", "Password", "REDMOND"); 
  serviceInstance.Url = new Uri("https://outlook.office365.com/EWS/Exchange.asmx");
   foreach (EmailMessage email in serviceInstance.FindItems(WellKnownFolderName.Inbox, new ItemView(100)))
     {

     }

用户名和密码都是正确的,但仍然存在问题。

请提示。

您不应该在指定域

serviceInstance.Credentials =新的WebCredentials(“ sample@microsoft.com”,“ Password”,“ REDMOND”);

仅使用用户帐户upn(可能与电子邮件地址不同)

serviceInstance.Credentials =新的NetworkCredential(“ sample@microsoft.com”,“ Password”);

或尝试下层格式

serviceInstance.Credentials =新的NetworkCredential(“ domain \\ user”,“ Password”);

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