If the Encrypt contents to secure data check box is selected, you have to have the certificate that was used to encrypt the file or folder to be able to open it. In this situation, you should obtain the certificate from the person who created or encrypted the file or folder, or have that person decrypt the file or folder.

若要在 Outlook.com 中获取支持，请单击此处或选择菜单栏上的帮助，然后输入查询。 如果自助服务无法解决问题，请向下滚动到“仍需要帮助？”，然后选择“是”。 若要在 Outlook.com 中联系我们，需要登录。

Microsoft のサポート担当者から、お客様向けにカスタマイズされた回答を得ることができます。 サポート オプションには、電話、チャット、電子メールによるサポートがあります。

邮件召回在选择“发送 ”后可用，并且仅当你和收件人 在同一组织中具有Microsoft 365 或Microsoft Exchange 电子邮件帐户时才可用。无法召回发送到 Hotmail、Gmail 或 live.com 帐户或从其发送的邮件。

使用文件共享、云服务或其他解决方案发送大型文件，以便在 Outlook 中解决文件大小限制。

不确定当前运行的是哪个版本，请参阅我使用的是哪个版本的 Outlook？. Windows 上的经典 Outlook. 如果你的帐户在新的 Outlook for Windows 中受支持，你将在经典 Outlook 的右上角看到一个切换开关，用于 试用新的 Outlook。 选择此切换将下载新应用，并允许切换到预览版。

After you turn on two-step verification or set up the Authenticator app, you may run into issues if you use older devices (like Xbox 360 or a mail-sending security camera) that don't support two-step verification. For those devices, you can sign in with an app password instead. An app password is a long, randomly generated password that you provide only once instead of your regular password ...

If you choose the Do Not Forward option, there are two possibilities:. Microsoft Office attachments such as Word, Excel or PowerPoint files remain encrypted even after they’re downloaded. This means that if the recipient downloads the attachment and sends it to someone else, the person they forwarded it to won’t be able to open the attachment because they don’t have permission to open it.

Ayarlar uygulamasında uygulamaları ve programları kaldırın veya kaldırın. Kötü amaçlı yazılımları kaldırmaya çalışıyorsanız taramanın nasıl çalıştırılacağını öğrenmek için bkz.Windows Güvenliği ile korunmaya devam etme. Alternatif olarak başka bir virüsten koruma yazılım programı kullanırsanız bunun virüsten koruma seçeneklerini denetleyin.

我们正在积极听取你的反馈，并将根据你告诉我们的内容更新和更改功能路线图。 如果你有关于我们应该考虑将哪些内容添加到新 Outlook 的反馈，请使用应用内 帮助 > “提供反馈” 链接。. 功能比较