How To Run System File Checker Windows 10

Windows 8.1 Windows 8.1 Enterprise Windows eight.ane Pro Windows 8 Windows 8 Enterprise Windows 8 Pro Windows vii Enterprise Windows vii Home Bones Windows 7 Home Premium Windows 7 Professional person Windows vii Starter Windows vii Ultimate Windows Vista Enterprise 64-bit Edition Windows Vista Ultimate 64-bit Edition Windows Vista Concern Windows Vista Business 64-bit Edition Windows Vista Enterprise Windows Vista Ultimate Windows 10 More...Less

If some Windows functions aren't working or Windows crashes, apply the Organisation File Checker to scan Windows and restore your files.

Though the steps below might look complicated at first glance, just follow them in order, stride-by-step, and we'll endeavour to go y'all back on track.

Run the System File Checker tool (SFC.exe)

To do this, follow these steps:

Open an elevated control prompt. To do this, practice the following equally your appropriate:
If you are running Windows 10, Windows 8.1 or Windows 8, first run the inbox Deployment Paradigm Servicing and Management (DISM) tool prior to running the Organization File Checker. (If you are running Windows 7 or Windows Vista, skip to Footstep three.)

Type the following command, and then press Enter. It may take several minutes for the command performance to be completed.

DISM.exe /Online /Cleanup-epitome /Restorehealth

Important: When you run this control, DISM uses Windows Update to provide the files that are required to fix corruptions. However, if your Windows Update client is already cleaved, apply a running Windows installation as the repair source, or utilise a Windows side-by-side folder from a network share or from a removable media, such as the Windows DVD, as the source of the files. To do this, run the following command instead:

DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:C:\RepairSource\Windows /LimitAccess

Note: Replace the C:\RepairSource\Windows placeholder with the location of your repair source. For more than information almost using the DISM tool to repair Windows, reference Repair a Windows Paradigm.

At the command prompt, blazon the following command, and so press ENTER:

sfc /scannow

Command Prompt with administrator rights - sfc /scannow

The sfc /scannow command will scan all protected system files, and supervene upon corrupted files with a cached copy that is located in a compressed folder at %WinDir%\System32\dllcache.
The %WinDir% placeholder represents the Windows operating organisation folder. For example, C:\Windows.

Note Practice not shut this Command Prompt window until the verification is 100% complete. The scan results will be shown after this process is finished.

Later on the process is finished, you lot may receive 1 of the post-obit messages:
- Windows Resource Protection did non find whatsoever integrity violations.
  
  This means that you do not have any missing or corrupted system files.
- Windows Resource Protection could non perform the requested operation.
  
  To resolve this problem, perform the Organization File Checker scan in safe mode, and make certain that the PendingDeletes and PendingRenames folders exist nether %WinDir%\WinSxS\Temp.
- Windows Resource Protection found corrupt files and successfully repaired them. Details are included in the CBS.Log %WinDir%\Logs\CBS\CBS.log.
  
  To view the particular information almost the system file scan and restoration, go to How to view details of the System File Checker process.
- Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log %WinDir%\Logs\CBS\CBS.log.
  
  To repair the corrupted files manually, view details of the System File Checker procedure to detect the corrupted file, and so manually replace the corrupted file with a known good copy of the file.

Swipe in from the right border of the screen, and and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search. Blazon Command Prompt in the Search box, right-click Command Prompt, and then click Run as administrator. If you lot are prompted for an ambassador password or for a confirmation, type the password, or click Allow.
Command prompt - Run as administrator (Windows 8 or 8.1)

To do this, click Get-go, blazon Control Prompt or cmd in the Search box, right-click Command Prompt, and and so click Run every bit administrator. If y'all are prompted for an administrator countersign or for a confirmation, type the password, or click Allow.
Command prompt - Run as administrator

More Information

How to view details of the System File Checker process

To view the details that included in the CBS.Log file, you can copy the information to the Sfcdetails.txt file by using the Findstr control, and then view the details in the Sfcdetails.txt. To practice this, follow these steps:

Open up an elevated command prompt as described in the previous step 1.
At the control prompt, blazon the following command, then press ENTER:
findstr /c:"[SR]" %windir%\Logs\CBS\CBS.log >"%userprofile%\Desktop\sfcdetails.txt"
Note The Sfcdetails.txt file contains details from every time that the System File Checker tool has been run on the calculator. The file includes information nearly files that were not repaired by the System File Checker tool. Verify the date and time entries to determine the problem files that were found the last time that you ran the Arrangement File Checker tool.
Open the Sfcdetails.txt file from your desktop.
The Sfcdetails.txt file uses the following format:

Date/Fourth dimension SFC detail The post-obit sample log file contains an entry for a file that could not be repaired: 2007-01-12 12:x:42, Info CSI 00000008 [SR] Cannot repair fellow member file [l:34{17}]"Accessibility.dll" of Accessibility, Version = 6.0.6000.16386, pA = PROCESSOR_ARCHITECTURE_MSIL (viii), Civilization neutral, VersionScope neutral, PublicKeyToken = {l:8 b:b03f5f7f11d50a3a}, Blazon neutral, TypeName neutral, PublicKey neutral in the store, file is missing

How to manually replace a corrupted system file with a known good copy of the file

Subsequently you determine which system file was corrupted and could not be repaired through the particular information in the Sfcdetails.txt file, observe where the corrupted file located, and then manually replace the corrupted file with a known good copy of the file. To do this, follow these steps:

Note You may exist able to get a known good copy of the system file from another reckoner that is running the same version of Windows with your computer. You may perform a System File Checker procedure on that figurer to brand certain the organization file that you intend to copy is a skilful copy.

Take administrative ownership of the corrupted organisation file. To practice this, at an elevated control prompt, copy and then paste (or blazon) the post-obit command, and and so press ENTER:

takeown /f Path_And_File_Name Note The Path_And_File_Name placeholder represents the path and the file name of the corrupted file. For example, type takeown /f C:\windows\system32\jscript.dll.
Grant administrators total admission to the corrupted system file. To practise this, re-create and paste (or blazon) the following command, and then printing ENTER:

icacls Path_And_File_Name /GRANT ADMINISTRATORS:F Note The Path_And_File_Name placeholder represents the path and the file proper noun of the corrupted file. For example, type icacls C:\windows\system32\jscript.dll /grant administrators:F.
Supplant the corrupted system file with a known skillful copy of the file. To do this, copy and paste (or type) the following command, and and so printing ENTER:

Copy Source_File Destination Note The Source_File placeholder represents the path and file name of the known good copy of the file on your computer, and the Destination placeholder represents the path and file proper noun of the corrupted file. For case, type copy E:\temp\jscript.dll C:\windows\system32\jscript.dll.

If the steps above don't piece of work, you may need to reinstall Windows. For more info, see Windows 10 recovery options.

Need more assist?