sfc:tldr:b9b74

sfc: Scan all system files and, if possible, repair any problems.

$ sfc /scannow

try on your machine

The command "sfc /scannow" stands for System File Checker (sfc) and "scannow" is a parameter used with the command.

The System File Checker is a Windows utility that verifies the integrity of essential system files on the operating system. It scans the protected system files, compares them to a cached copy kept in a compressed folder (%WinDir%\System32\dllcache), and replaces any corrupted or damaged files with the correct versions.

When you run the command "sfc /scannow" in the Command Prompt or the Run dialog box, the System File Checker starts scanning the system files for any issues and attempts to repair them automatically. It may require elevated administrator privileges to successfully complete the scan and repair process.

This command is often used as a troubleshooting step when experiencing issues with your Windows operating system, as corrupted or missing system files can cause various problems, such as crashes, errors, or application malfunctions. The "sfc /scannow" command helps to ensure system stability and reliability by ensuring the integrity of critical system files.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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