Learn how to download and install Microsoft 365 or Office 2019, 2016, or 2013 on your PC or Mac. Find out how to activate Office, troubleshoot issues, and switch languages or bit versions.

Learn how to download and install Microsoft 365 or Office 2021 on a PC or Mac with a Microsoft account, work or school account. Find tips, troubleshooting, and activation steps for Microsoft 365 or Office products.

Learn how to create a USB flash drive or DVD to install or reinstall Windows 11, 10, 8.1, or 7. You'll need a reliable internet connection, a blank storage device, and a product key (if applicable).

Learn how to download and install Microsoft 365, Office 2021, Office 2019, or Office 2016 offline on your PC. Follow the steps for your plan and activate Office after installation.

Learn where to enter your Office 2021 product key on different websites and how to install or reinstall Office. Find tips for troubleshooting product key issues and contacting support.

Learn how to locate your BitLocker recovery key, a 48-digit number needed to unlock an encrypted drive in Windows. See where to find it attached to your Microsoft account, work or school account, printout, or USB flash drive.

Learn how to view, manage, and install add-ins for Microsoft 365 programs on Windows. Find out how to troubleshoot add-in errors, security settings, and device permissions.

Learn how to download and use the tool to fix errors in your Outlook mail profile that prevent you from connecting to your email. The tool can also diagnose and resolve other Outlook problems for Microsoft 365 accounts.

Learn how to access your Outlook.com, Hotmail, Live, or MSN email account with your Microsoft Account username and password. Find solutions for common sign-in problems and get help from the Outlook.com community.

Learn how to update your Surface device with the latest drivers and firmware for Windows 10 or Windows 11. Find links for automatic and manual updates, and check your Surface model and OS build.