- Sign in to Microsoft 365
Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser
- Contact Us - Microsoft Support
Contact Microsoft Support Find solutions to common problems, or get help from a support agent
- Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or . . .
Learn how to install, reinstall, or activate Microsoft 365 or Office 2024 on a PC or Mac
- How to sign in to a Microsoft account
Use your Microsoft account to sign in to Microsoft services like Windows, Microsoft 365, OneDrive, Skype, Outlook, and Xbox Live
- Download and install or reinstall Office 2021, Office 2019, or Office . . .
Learn how to install Office 2021, 2019, or 2016 on your PC or Mac
- How to get help in Windows - Microsoft Support
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
- Manage devices used with your Microsoft account
Learn how to manage your Microsoft devices Add, remove, register, or rename a device on your Microsoft account
- How to find product key for Microsoft Office already installed
If Microsoft Office is installed on your computer and activated, you can retrieve the product key using the Command Prompt Note that this method only works for some versions of Office, particularly if the key is stored in the system's registry (usually with older versions or volume licenses) How to Find Office Product Key via CMD: 1
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