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.

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 …

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

Nov 11, 2025 · Microsoft combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see Servicing stack …

Sep 5, 2025 · Why is Microsoft retiring Project Online? The legacy architecture of Project Online limits our ability to deliver modern, AI-powered experiences. Microsoft is investing in Planner and the …

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 …

Starting January 16, 2025, Microsoft 365 Personal and Family plans worldwide will include Microsoft Copilot and Microsoft Designer. As an existing Microsoft 365 Personal and Family subscriber, you …

Dec 15, 2025 · Native NVMe support in Windows Server 2025 is a leap forward in storage innovation that will redefine what’s possible for your most demanding workloads. Enable Native NVMe today …