To install Authenticator on your iOS device Scan the QR code or download and install Authenticator from the Apple app store. Get the app

Learn more about how Xbox cloud gaming works on iOS mobile devices.

从 2026 年 2 月开始，我们将在 Microsoft Authenticator 中为工作/学校 Entra 凭据引入越狱/根检测。 此更改可防止验证器 Entra 凭据在越狱或已获得 root 权限的设备上运行，从而增强安全性。

Microsoft Support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows 11, Surface, and more.

You can resolve problems with Microsoft Authenticator by checking the tips in this article and reviewing some of the known errors.

Microsoft Entra多重身份验证可检测异常活动（如重复登录尝试），并可能阻止其他尝试应对安全威胁。 如果错误地进行了多次登录尝试，请等待，直到可以重试，或使用其他 MFA 方法进行登录。 如果你怀疑其他人正在尝试访问你的帐户，请与你的 IT 管理员联系。

If you already had a Microsoft 365 subscription and did not purchase it from the iOS app, you can manage it at: https://account.microsoft.com/services If you purchased a Microsoft 365 Personal subscription from the iOS app, go to Settings > [your name] > Subscriptions.

The type of support Microsoft provides for consumers depends on the product you're calling about and if you have a product for home or for business use. It can also depend on if you want help for an issue with a service like OneDrive or Outlook.com, or help with Windows, but you don't have an existing Microsoft 365 subscription.

A phishing email is an email that appears legitimate but is actually an attempt to get your personal information or steal your money. Some deceptive emails appear to be from a safe sender but, in fact, have a "spoofed" source address to fool you. Here are some ways to deal with phishing and spoofing scams in Outlook.com. Spoof intelligence in Exchange Online Protection helps prevent phishing ...

Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.