Learn how to use a USB flash drive or DVD to install or reinstall Windows 10, 8.1, 7, or 11. Find the software download website, product key, and recovery options.

Learn how to upgrade to Windows 11 from Windows 10 using Windows Update, Installation Assistant, or installation media. Note that some features and apps require higher system requirements than the minimum.

Find out how to download and install Office 2016 on your PC or Mac, or reinstall it if you already have a product key. Learn how to activate Office 2016 and troubleshoot common issues.

Learn how to download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac. Find out the system requirements, product keys, activation steps, and troubleshooting tips.

Learn how to mirror or project the screen of another device to your Windows PC using Miracast. Follow the steps for Windows 11 or Windows 10 to install the Wireless Display app or the Connect app and select the device you want to cast to.

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

Learn how to use the PC Health Check app to see if your device meets the system requirements for Windows 11 after changing hardware. Find out how to manually refresh the eligibility assessment and troubleshoot issues with the app.

Learn where to enter your product key for different versions of Office or Microsoft 365, and how to install or reinstall Office after redemption. Find tips for troubleshooting product key issues and contacting support.

Learn how to get and use themes for Windows 10, which combine background pictures, window colors, and sounds. Find themes from various categories and download them from the Microsoft Store or the web page.

Learn how to activate Windows 11 using a digital license or a 25-character product key. Find out how to check your activation status, link your Microsoft account, and troubleshoot activation issues.