How to use DISM and SFC

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I ran DISM and SFC because many errors were recorded in the Windows 10 event log.

DISM and SFC are system repair tools that Microsoft calls System File Checker.

Included with Windows 10.

DISM is included with Windows 7 and later operating systems.
SFC is included in Windows Vista and later operating systems.

Both tools can be run by entering commands in a command prompt launched in administrator mode or in Windows PowerShell.

The Microsoft Japanese site is written to run DISM first, then SFC.

Well, the main subject.

The order in which DISM and SFC are performed varies.

I don't know which is the correct answer. ...?

I am executing DISM → SFC in order according to the description on the Microsoft Japanese site.

It is certain to execute multiple times like DISM → SFC → DISM.

This article consists of the following contents.

DISM and SFC overview
How to use DISM
How to use SFC

DISM and SFC overview

DISM /SFC
DISM	Deployment Image Servicing and Management Deployment image servicing and management tools Available on Windows 7 or later OS After running DISM, it is recommended to run SFC /scannow to verify that all issues have been fixed
SFC	System File Checker System file checker Available on Windows Vista or later OS Running insider build (14915) may fail with ~ 20% (known issue) Running sfc /scannow restores system files to default state Run 3 times to resolve all issues

Reprint help

The help of DISM ｜ SFC called from Windows Power Shell is reprinted.

DISM help

PS C:\WINDOWS\system32 >dism /?

DISM enumerates, installs, uninstalls, configures, and updates Windows image features and packages. The commands available depend on the image you are servicing and whether the image is offline or running.

Deployment image servicing and management tools
Version: 10.0.16299.15
DISM.exe [dism_options] {Imaging_command} [< Imaging Arguments >]
DISM.exe {/Image: < Offline image path >| /Online} [dism_options]
{servicing_command} [< service argument >]

SFC help

PS C:\WINDOWS\system32 >sfc /?

It scans the integrity of all protected system files and replaces the wrong version with the correct Microsoft version.

How to use DISM

dism.exe

The dism command and arguments (online, cleanup-image, restorehealth) are not case sensitive. .exe can be omitted.

PS C:\WINDOWS\system32 >DISM /Online /Cleanup-image /Restorehealth

/Online
Target the running operating system.

/Cleanup-image
? (Not mentioned in DISM help.)

/CheckHealth
With an argument, the DISM tool reports whether the image is healthy, repairable, or unrepairable. If the image cannot be repaired, you will need to discard the image and start over. If the image can be repaired,

/RestoreHealth
You can use arguments to repair the image.


>_	Administrator: Windows PowerShell	ー □ ×
PS C:\WINDOWS\system32 >DISM /Online /Cleanup-image /Restorehealth Deployment image servicing and management tools Version: 10.0.18362.1 Image version: 10.0.18363.815 [========================== 100.0% ===================== =====] The restore operation has completed successfully. The operation completed successfully.

How to use SFC

sfc.exe

[sfc, scannow] is not case sensitive.
.exe can be omitted.

PS C:\WINDOWS\system32 >sfc /scannow

/SCANNOW
It scans the integrity of all protected system files and repairs problem files if possible.

There is a problem
c:\_	Administrator: Command prompt	ー □ ×
C:\WINDOWS\system32 >SFC /scannow System scan is starting. This will take some time. There is a system repair pending and a reboot is required to complete. Please restart Windows and execute sfc again.

no problem
c:\_	Administrator: Command prompt	ー □ ×
C:\WINDOWS\system32 >SFC /scannow System scan is starting. This will take some time. The system scan verification phase is starting. Verification 100% complete. Windows Resource Protection did not detect an integrity violation.

Summary

When Microsoft installs the Feature Update, which is released twice a year, it updates system files and initializes some of the configuration changes that Windows had made.

If your PC feels unwell after running Windows Update, try running DISM, SFC.

DISM, SFC order

Microsoft Community (2016/10/07) is written to execute in order of SFC → DISM.

on the other hand,

Windows support (2019/06/14) is written to execute DISM → SFC in that order.

Which one should I choose ...?

So, the order I thought about is as follows.