Use The System File Checker Tool To Repair Missing Or

The System File Checker or sfc.exe is a utility in Microsoft Windows located in C:WindowsSystem32 folder. This utility allows users to scan for & restore corrupt Windows system files. In this post, we will see how to run System File Checker and also see how to lớn analyze SFC logs.

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Run System File Checker

In Windows 10/8/7/Vista, the System File Checker is integrated with Windows Resource Protection, which protects registry keys và folders as well as critical system files. If any changes are detected lớn a protected system file, the modified tệp tin is restored from a cached copy located in the Windows folder itself.So if at any point of time if you find that you have sầu hacked some system files or maybe applied some tweaks or replaced system files, maybe while customizing your Windows, và you now find that your Windows is not working properly, you may want khổng lồ consider running this utility first, before trying a System Restore. To do so, you will have to lớn first open an elevated command prompt window.To run the System File Checker in Windows 10/8/7, type cmd in the Start tìm kiếm box. In the result, which appears, right-cliông xã on cmd and select Run As Administrator.If you bởi vì not run the Commvà Prompt as Administrator, you will see a message:You must be an administrator running a console session in order to lớn use the sfc utilityHence it is imperative sầu that you vày so.

Run sfc /scannow

In the command prompt window which opens, type the following và hit Enter:sfc /scannowThe sfc utility will run for a while and if any corruptions are found, replace them on reboot.

Windows Resource Protection could not persize the requested Service or Start the Repair Service

In case you are unable lớn start the System File Checker, và you instead get the “Windows Resource Protection Could Not Start the Repair Service” error, you may want to check up if your Windows Modules Installer service has been Disabled. To vì chưng so, type services.msc in start search and hit Enter. The status of this service should be set to lớn Manual.Alternatively, you can also tải về our very useful freeware utility FixWin & cliông chồng on the System File Checker Utility button. This will run sfc.exe.While running this tool, at the kết thúc of the scan, you may see any of these messages – some of which could indicate errors: They could be:
Windows Resource Protection did not find any integrity violationsWindows Resource Protection found corrupt files and successfully repaired themWindows Resource Protection found corrupt files but was unable lớn fix some of themWindows Resource Protection could not perform the requested operationSystem File Checker SFC cannot repair corrupted member fileWindows Resource Protection found corrupt files but was unable khổng lồ fix some of themWindows Resource Protection could not start the repair service.If this happens, you may try khổng lồ Run System File Checker in Safe Mode or repair the Windows Component Store using DISM và see if it works.See this post if SFC not working or will not run.Read: DISM vs SFC first? What should I run first on Windows 10?

Run System File Checker Offline or in Safe Mode or Boot-Time

Simply boot inkhổng lồ Safe Mode và follow the same procedure. System File Checker will run in Safe Mode too.The /scanonce and /scanboot syntax have sầu been discontinued after Windows XP and does not work on Windows 8 and later.Follow this procedure if you want to run System File Checker in Safe Mode, Boot Time, or Offline.You can also use the sfc.exe program to lớn help you troubleshoot crashes that occur in the user-mode part of Windows 10, Windows 8.1, Windows 7 và Vista. These crashes may be related to missing or damaged operating system files. To vì chưng so, you may have to access the log files.

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Read: How to scan & repair a single tệp tin using System File Checker.

How lớn view the SFC log file

The sfc.exe program writes the details of each verification operation và each repair operation khổng lồ the CBS.log file. Each sfc.exe cộ program entry in this file has a tag. The CBS.log tệp tin is located in the %windir%LogsCBS thư mục.You can tìm kiếm for tags lớn help locate SFC.exe pháo program entries. To perkhung this kind of search and to lớn redirect the results lớn a text file, follow these steps:Click Start, type cmd in the Start Search box, right-cliông chồng cmd in the Programs list, và then cliông xã Run as administrator.Type the following comm&, & hit Enter:findstr /c:"" %windir%logscbscbs.log >sfcdetails.txtThe sfcdetails.txt tệp tin includes the entries that are logged every time that the SFC.exe pháo program runs on the computer.

How to lớn interpret the SFC log tệp tin entries:

The sfc.exe program verifies files in groups of 100. Therefore, there will be many groups of SFC.exe pháo program entries. Each entry has the following format: date time entry_type details. For more details on how khổng lồ interpret, visit KB928228.I hope this post helped you.

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An& Khanse is the Admin of, a 10-year Microsoft MVPhường (2006-16) và a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes khổng lồ your system và be careful about any 3rd-các buổi party offers while installing freeware.
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