The sfc command is a command prompt command that can be used to verify and replace critical Windows system files. Many troubleshooting steps recommend using the sfc command.
40 Windows Commands You MUST Know (in 10 Minutes)
System File Checker is a very useful tool when you suspect problems with protected Windows files, such as many DLL files.
The sfc command is available through the Command Prompt in most Windows operating systems, including Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000.
System File Checker has been part of Windows Resource Protection since Windows Vista and is sometimes also called Windows Resource Checker in those operating systems.
