Microsoft prioritizes account security and works to prevent people from signing in without your permission. When we notice a sign-in attempt from a new location or device, we help protect the account by sending you an email message and an SMS alert. If your phone number or email changes, it's important to promptly update the security contact info on the Security basics page so we can work with ...

了解如何在移动设备、Windows 设备或 Xbox 主机上兑换 Microsoft/Xbox 礼品卡或其他代码。

Using Authenticator as a way to sign in If you have turned on passwordless, two-step, or multi-factor authentication for your account, use the following steps to sign-in: Go to the site where you want to sign in. Enter your username at the sign-in prompt and select Next. Select Send notification.

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

As of March 19, 2025, the Xbox Game Pass for mobile is no longer supported. Get more info about cloud gaming on other devices.

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 ...

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

Open https://aka.ms/iosDefender (or scan the QR code below) on your iOS device to go to Microsoft Defender in the Apple App Store and follow the installation steps.

What about Defender web protection on iOS? On iOS we can't show you the block screen in the browser, but Defender will still block dangerous pages for you and give you a notification that we've blocked the page (and why).

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.