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.

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.

Use an existing Microsoft account to get started, then add your new account later. Set up your PC using a local account, then learn how to Change from a local account to a Microsoft account.

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.

Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

Jan 5, 2026 · Microsoft Learn Discover new skills, find certifications, and advance your career with interactive, hands-on learning paths. Find out more Microsoft Support Search our …

Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.