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sfc:tldr:fff64
The command "sfc" stands for System File Checker, which is a built-in utility in Windows operating systems. It is used to scan and repair any corrupted or missing system files on your computer.
When you run the "sfc" command, it initiates a scan of the protected system files in your Windows installation. It compares these files to their known good versions stored in the system file cache (hence the name "System File Checker"). If it finds any discrepancies or corrupt files, it replaces them with the cached copies to restore the integrity of your operating system.
To run the "sfc" command, you need to open the Command Prompt as an administrator. Simply type "sfc /scannow" and hit Enter. The command initiates the scan, and it may take some time to complete.
Overall, the "sfc" command is a useful tool for troubleshooting and repairing issues related to corrupted or missing system files, which can cause various problems such as crashes, error messages, or system instability.