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

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

Get help for the account you use with Microsoft. Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions.

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

Search for help on the taskbar, use the Tips app, select the Get help link in the Settings app, or go to support.microsoft.com/windows.

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

Dec 17, 2025 · Welcome to the special edition of What's new in Microsoft 365 Copilot for both November and December 2025! Every edition, we highlight new features and enhancements to keep Microsoft …

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.

If the username lookup wasn't successful, try looking for your Microsoft account username within other products or services that you know are associated with that account. Read check your products or …

At Microsoft, we are dedicated to providing our customers with the tools they need to achieve what matters, in their work and life. In order to focus on new benefits, we occasionally remove features …