What is DismHost.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the DismHost.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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DismHost.exe file information

Windows Task Manager with DismHost
DismHost.exe process in Windows Task Manager

The process known as Dism Host Servicing Process belongs to software Microsoft Windows Operating System by Microsoft (

Description: DismHost.exe is not essential for Windows and will often cause problems. DismHost.exe is located in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 96,768 bytes (42% of all occurrences), 149,184 bytes and 4 more variants. 
The file is a Microsoft signed file. The program is not visible. The DismHost.exe file is not a Windows system file. Therefore the technical security rating is 33% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of problems with DismHost.exe, you could also do the following:
  • visit the support page
  • safely remove the program using the uninstall program of Microsoft Windows (Control Panel ⇒ Uninstall a Program)

Recommended: Identify DismHost.exe related errors

Important: Some malware camouflages itself as DismHost.exe. Therefore, you should check the DismHost.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Found this several times in C:/Users/Admin/local settings/temp It was in a folder with 4-5 diffrent series of numbers Inside it had several .dll's and a nother folder (en-us) In that folder there were 14 other files Marked .dll.mui I had no problem deleting the folder But it keeps returning Windows 7 ultimat x64
my dismhost.exe files are in c:\windows\prefetch there are 13 of them and they are visible.
I have a Dismhost.exe file under my Windows/System32/DISM/ file. It is 95 kb. I am having trouble with some kind of malware trojan but have yet to locate it. I am using Windows 7 64.bit
a search on the disk doesn't find this file but the startup processes show this file using quite a bit of disk resource. Seems like it should be a problem.
I've noticed that it is open when I am using Disk Cleanup.
DISM stands for "Deployment Image Servicing and Management" - it's a system process that handles Windows images, generally the major kind like a new OS version or service pack. Yes, this process is generally necessary to keep your system up to date.
  CS   (further information)
From Microsoft: What Is Deployment Image Servicing and Management? Deployment Image Servicing and Management (DISM.exe) is a command-line tool that can be used to service a Windows® image or to prepare a Windows Preinstallation Environment (Windows PE) image. It replaces Package Manager (Pkgmgr.exe), PEimg, and Intlcfg that were included in Windows Vista®. The functionality that was included in these tools is now consolidated in one tool (DISM.exe), and new functionality has been added to improve the experience for offline servicing.
  Tommi   (further information)
I think Cade is right. It shows up to me when a m using DiskCleanup Tool, too.

Rating chart

Summary: Average user rating of DismHost.exe: based on 6 votes with 8 user comments. 2 users think it's probably harmless. 3 users think it's neither essential nor dangerous. One user suspects danger. 3 users don't grade DismHost.exe ("not sure about it").

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Best practices for resolving DismHost issues

A clean and tidy computer is the key requirement for avoiding problems with DismHost. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the DismHost.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

DismHost.exe [all]