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The System File Checker or sfc.exe is a utility in Microsoft Windows located in the folder C:WindowsSystem32. This utility allows users to search for and recover corrupted Windows system files. In this article, we will see how to run the System File Checker and how to analyze SFC protocols.
System File Checker
In Windows 10/8/7/Vista, System File Checker is integrated with Windows Resource Protection, which protects registry keys and folders as well as critical system files. If changes to a protected system file are detected, the modified file is recovered from a cached copy in the Windows folder itself.
So, if at any time you notice that you have hacked into system files or made optimizations or replaced system files, perhaps while you are customizing your Windows, and you now notice that your Windows is not working properly, you should run this utility before attempting a system restore. To do this, you must first open a raised prompt window.
To run system file checking under Windows 10/8/7, type cmd in the start search box. In the result that appears, right-click cmd and select Run as administrator.
Run sfc /scannow
At the command prompt that opens, type sfc /scannow and press Enter.
The sfc utility will run for a while and if damage is found, replace it on reboot.
Windows Resource Protection could not run the requested service or start the repair service
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If you cannot start scanning the system file and receive the error Windows Resource Protection Could Not Start the Repair Service instead, you should check if your Windows Modules Installer service has been disabled. Enter services.msc in the start search and press Enter. The status of this service must be set to Manual.
Alternatively you can also download our very useful free FixWin software and click on the button System File Checker Utility. This launches sfc.exe.
Sometimes errors can occur during the execution of this tool, which prevents the successful execution of the tool. It could be them:
- System File Checker SFC cannot repair corrupted member file
- Windows Resource Protection found corrupted files, but could not repair some of them
- System File Checker does not work,
- Windows Resource Protection could not start the repair service
In this case, you can try running System File Checker in safe mode or use DISM to repair Windows component memory and verify that it is working.
Run the system files analysis offline or in safe mode or at startup
Start in safe mode and follow the same procedure. System File Verifier also works in safe mode.
The syntax /scanonce and /scanboot /scanboot has been set on Windows XP and does not work on Windows 8 and later versions.
Follow this procedure if you want to run the System File Checker in safe mode, on startup or offline.
You can also use the sfc.exe program to fix crashes in Windows 10, Windows 8.1, Windows 7 and Vista user mode. This
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