What is ieuser.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 ieuser.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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Ieuser.exe file information

Windows Task Manager with ieuser
Ieuser.exe process in Windows Task Manager

The process known as Internet Explorer belongs to software Microsoft Windows Operating System by Microsoft (

Description: Ieuser.exe is an important part of Windows, but often causes problems. Ieuser.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 299,520 bytes (57% of all occurrences), 301,568 bytes or 288,256 bytes. 
The file is a Windows system file. The program has no visible window. The ieuser.exe file is a trustworthy file from Microsoft. Ieuser.exe is able to monitor applications. Therefore the technical security rating is 2% dangerous, however you should also read the user reviews.

Recommended: Identify ieuser.exe related errors

Important: Some malware camouflages itself as ieuser.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the ieuser.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

Process is started by Windows as pre-executable for Internet Explorer. It loads security information and settings. When elevated security is required (ie: installing ActiveX) it is called and runs as administrator. Not dangerous or malicious, but can be modified by malware and used in malware processes.
is a dangerous spyware attack
  Tom Ockers  
Ieuser is a strong spyware attack and cannot be resolved, you cannot delete it, it's also not possible to first rename it and then delete it, what i suggested is to do a virus scan after a cold boot, a cold boot is boot from cd rom and then try to delete it, you can reboot with windows boot cd and then ask a path and then delete it. Or. You start your pc from the hard disk that windows is started, you go to google, then type in rescue disk kaspersky, that's a virusscanner. You set it on cd or usb. Then you shut down your pc and you put first the disc in the cd rom or usb in the ubsdrive. Then you start your pc again and run kaspersky rescue disk, you just follow the steps, it's easy and logical. When you are in kaspersky you scan everything. Normally it should find it. Goodluck
  Tom Ockers  
ieuser is used as a spyware, ieuser can see at your pc from another pc. It's used to watch peoples action from another pc, you can't remove it. so it's dangerous because the guy who put it on from another pc can track your paswords from email, bank, etc.
  Tom Ockers  
Program Files\Internet Explorer\ieuser.exe
It's dangerous. It blocks internet explorer browsing completely, and locks up Windows Update in Vista so nothing can be downloaded. All IE settings are overwritten so you can't bring it down to anything below Medium security.
this thing is always running in my taskm. Even when EI isent running does this mean im infected? its located in C\program files\internet explorer
It had a trojan genric in it bitdefender detected it the trojan just make IE unsafe and easy to exploit.
More comments can be found here:
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Rating chart

Summary: Average user rating of ieuser.exe: based on 24 votes with 9 reviews. 12 users think ieuser.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 3 users think it's neither essential nor dangerous. 2 users suspect danger. 6 users think ieuser.exe is dangerous and recommend removing it. 4 users don't grade ieuser.exe ("not sure about it").

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Best practices for resolving ieuser issues

A clean and tidy computer is the key requirement for avoiding problems with ieuser. 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 ieuser.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

ieuser.exe [all]