Article Number: 000122035
The Deployment Image Servicing and Management (DISM) tool can be used to scan and repair potential issues with the .wim store in Windows that may impact system files. This article provides information on the DISM tool and how to use it to scan and repair the .wim store.
The Deployment Image Servicing and Management Tool (DISM) is an administrator-level, command-line executable available in Windows which can be used to repair your Windows image or to modify Windows installation media. It is able to mount Windows images in .wim, .vhd, or .vhdx format, and can be used to address issues in the currently installed Windows operating system.
The System File Checker tool can be used to repair corrupted system files. For more information on how to use the tool, refer to the following Microsoft article: Use the System File Checker tool to repair missing or corrupted system files . The System File Checker tool compares those files against the .wim store that is saved on the system (not to be confused with the Windows Software Store app where you can purchase software for Windows). If this store is corrupted, the repairs may not resolve the problems that the system is having. The DISM tool has some modifiers that can scan and repair the .wim store based on parent copies stored on Microsoft’s update servers, making it useful to run in conjunction with a system file check. Reference the table below for a list and description of DISM tool modifiers (Table 1):
|/online||Signifies that you are modifying an online image (does not signify that a scan will run over the internet)|
|/cleanup-image||Triggers a more extensive check which can resolve issues with the store|
|/checkhealth||Starts a basic check to see if corruption has been detected in the store|
|/scanhealth||Performs a more comprehensive scan of the store for corruption|
|/restorehealth||Scans the store for corruption and also repairs corrupted files|
As an example, the following command would trigger a scan of an online image to check the Windows store for corruption and repair any that it finds:
The command does not always check the files with the parent copies stored on the Windows Update servers by default, and adding the /online modifier does not allow the computer to pull from the Windows Update server with it disabled. If the online functionality is disabled, you may run the command and get an error stating that it was unable to find the source file. Note that with this option enabled, the repair will likely take significantly longer depending on your internet connection speed. To enable the option:
Under good conditions, the command will take about 10-20 minutes to run, but depending on circumstances it can potentially take over an hour.
01 Apr 2021