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 ...

Find help and how-to articles for Windows operating systems, including Windows 11 and Windows 10. Learn about installation, updates, drivers, security, troubleshooting and more.

Learn how to use Windows 11 features such as universal search, desktops, Microsoft account, keyboard shortcuts, OneDrive, and Tips. Watch a video and read tips to get started with Windows 11.

Microsoft Defender is a security app for Microsoft 365 subscribers that includes anti-malware, web protection, and identity theft monitoring. Learn how to install, use, and share Microsoft Defender with your family on Windows, Mac, Android, and iOS devices.

Phone Link is the new name for Your Phone app, which lets you access your mobile apps and content on your Windows PC. Learn how to set up and use Phone Link with Android devices, Samsung devices, and Surface Duo.

Xbox Support offers help for Xbox, Game Pass, and billing questions. Get advice and customer service in the Xbox Support community.

Learn how to remove and reinstall your printer to download the proper drivers in Windows 11 or Windows 10. Find out how to troubleshoot printer problems and get help from the device manufacturer's website.

Learn how to register your security info and mobile device to reset your work or school password if you forgot it or got locked out. Find out the common problems and solutions for password reset feature.

Find out how to use and troubleshoot your Surface device and accessories. Learn about hardware, software, warranty, and more support options.

如果这是你第一次安装 Microsoft 365，则可能需要先执行一些设置步骤。展开下面的 “了解详细信息”部分。 但是如果是重新安装 Microsoft 365，且已兑换了产品密钥并拥有与 Microsoft 365 相关联的帐户，请转到“登录并安装 Office”的部分。