Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.

Learn how to install, reinstall, or activate Microsoft 365 or Office 2024 on a PC or Mac.

Learn how to manage your Microsoft devices. Add, remove, register, or rename a device on your Microsoft account.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Find out how to get support for Microsoft apps and services.

Mar 26, 2025 · Microsoft is rolling out a new sign in experience for over 1 billion end users. What we learn can help to improve sign-in for all Microsoft customers.

A Microsoft account recovery code is a 25-digit code used to help you regain access to your account if you forget your password or if your account is compromised.

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

More help If you're using a work or school account and couldn't install classic Outlook following the steps above, contact the IT admin in your organization for assistance.

Microsoft 365 Copilot empowers you to enhance your skills and boost productivity using the power of Artificial Intelligence, helping you work smarter and achieve more efficiently.