Microsoft Authenticator can be used not only for your Microsoft account, and work or school accounts, you can also use it to secure your Facebook, Twitter, Google, Amazon, and many other kinds of accounts. It's free on iOS or Android. Learn more and get it here.

Outlook apps are available for free and can be downloaded directly from the Microsoft Store on Windows, the Mac App Store, iOS App Store, or the Google Play Store. After your download the new email app, add your accounts and they will all be configured to use Modern Authentication and sync properly, helping keep them safe.

为获得最佳的体验，建议使用 Outlook for iOS 移动应用。 有关故障排除提示，请参阅排查移动设备上的电子邮件设置常见问题解答。 你也可以联系支持人员： 如果 iOS 邮件应用存在问题，请联系 Apple 支持。

Manage suggested recipients in the To, Cc, and Bcc fields in Outlook for iOS and Android. Contact Suggestions are generated within the Microsoft 365 Service using personal contacts, contacts from your organization (if applicable), and by saving the names and addresses you've previously used when sending messages.

在受信任的设备上打开双重验证提示. 根据组织的设置，在执行双重验证时，你可能会看到一个检查框，上面写着“n 天不再询问”。 如果已选择此选项来停止双重验证提示，然后丢失设备或设备可能遭到入侵，则应Microsoft 365 将你注销所有设备，以帮助保护你的帐户。

Talk to support. If you have a Microsoft 365 for home subscription, or you purchased a one-time download of Office 2016, click the Contact Us link at the bottom of this page.. Ask the community

Remote Assistance Support from Microsoft allows a Microsoft support professional in another location to view your computer screen and work on your computer over a secured connection.Protect yourself from tech support scams.

Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.

Add your Outlook.com, Microsoft 365, or Exchange-based email account to your iPhone, iPad, or iPod Touch using the iOS Mail app.

Contact support in Outlook for iOS or Android. Your best bet for the most expert help with Outlook for iOS or Android is right inside the app! Easily communicate with our support team using the message functionality in Outlook.