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

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.

Learn how to redeem prepaid codes for Xbox games, subscriptions, or downloadable content using your account.

If you purchased a Microsoft 365 Personal subscription from the iOS app, go to Settings > [your name] > Subscriptions. Microsoft 365 subscriptions purchased from the app will be charged to your iTunes account and will automatically renew within 24 hours prior to the end of the current subscription period, unless auto-renewal is disabled beforehand.

Microsoft Software Licence Terms for Xbox and gaming applications for Android and iOS/iPads IF YOU LIVE IN (OR ARE A BUSINESS WITH A PRINCIPAL PLACE OF BUSINESS IN) THE UNITED STATES, PLEASE READ THE “BINDING ARBITRATION AND CLASS ACTION WAIVER” SECTION BELOW.

The Microsoft 365 (Office) app is now called the Microsoft 365 Copilot app across web (office.com, microsoft365.com), mobile (iOS, Android), and Windows. The new app name and icon reflects the integration of Copilot within the Microsoft 365 app.

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 ...

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

Find out how to change your Xbox gamertag through a browser, on your Xbox console, or your Windows device.

在Outlook中，你可以為電子郵件建立一個或多個個人化簽名。 你的簽名可以包含文字、連結、圖片和圖片 (，例如你的手寫簽名或標誌) 。