Learn how to scan and repair missing or corrupted system files in Windows using the System File Checker tool (sfc/scannow). Follow the steps to run the tool, view the scan results, and manually replace the corrupted files if needed.

Learn how to use the PC Health Check app or the Microsoft Compatibility Appraiser task to see if your device meets the system requirements for Windows 11 after changing your hardware. Find out how to refresh the eligibility assessment and what factors affect the upgrade offer.

Learn how to switch out of S mode in Windows 11 or Windows 10 to install apps from outside of the Microsoft Store or to upgrade to Windows 11. S mode is only available in Windows 11 Home edition and is not available in Windows 11 Pro, Enterprise, or Education editions.

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 about the features and buttons of the new Xbox Wireless Controller for Xbox Series X|S, Xbox One, PC, and cloud gaming devices. The USB-C power port is used for charging the controller and is located on the top edge above the Xbox button.

Learn how to use and customize the Xbox Elite Wireless Controller Series 2, a performance-class controller for competitive gamers. See the buttons, sticks, paddles, ports, and switches on the controller and how to change them.

Learn how to redeem a Microsoft gift card, Xbox download code or token, Office product key, or Windows activation code to your Microsoft account. Find troubleshooting tips and contact support if you need help.

Learn how to get a refund for digital game products purchased from the Microsoft Store or Xbox apps. Find out the eligibility criteria, guidelines, and resources for refund requests.

Learn how to remove a device from the Phone Link app on your Android or Surface Duo device and your PC. Follow the steps for both devices and sign out of your Microsoft account online.

Learn how to add, remove, connect, and disconnect user accounts in Windows 10 and Windows 11. User accounts let each person have their own settings, documents, and applications, and can help with security and privacy.