Learn how to use the System File Checker tool (SFC.exe) to scan and restore Windows system files that are not working or causing crashes. Follow the steps to run SFC.exe, view the scan results, and manually replace the corrupted files if needed.

Find out how to download and install Microsoft 365 or Office 2019, 2016, or 2013 on your PC or Mac. Follow the steps to sign in, choose your language and bit version, and activate your product.

Learn how to use VLOOKUP, INDEX, and MATCH to look up values in Excel tables. See examples, tips, and limitations of each function, and how to use the new XLOOKUP and XMATCH functions.

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.

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 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 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 on the web page.

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 switch out of S mode in Windows 11 Home edition 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 use the automated tool to uninstall Office from your computer. Follow the steps for different web browsers and select the version you want to remove.