Learn how to use the System File Checker tool (SFC.exe) to scan and restore missing or corrupted system files in Windows. Follow the steps to run the tool, view the scan results, and manually replace the corrupted files if needed.

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 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 about the design, functionality, and compatibility of the new Xbox Wireless Controller for Xbox Series X|S, Xbox One, PC, and cloud gaming devices. See the buttons, triggers, thumbsticks, and ports on the controller and how to use them.

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

Find solutions to common problems, or get help from a support agent for Microsoft products and services. Sign in to get personalized help and chat with a Microsoft specialist.

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 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 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 on the same device.

Learn how to update your controller wirelessly, with a USB cable, or on a PC using the Xbox Accessories app. The app lets you customize the Xbox Elite Wireless Controller Series 2 on Windows 10/11.