What is MSASCui.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 MSASCui.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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MSASCui.exe file information

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

The process known as Windows Defender User Interface or Internet Explorer belongs to software Windows Defender or Microsoft Windows Operating System or Microsoft Windows or Legacy utilities for WebPlus (version 10) or Verizon Media Manager or Windows Internet Explorer by Microsoft (

Description: The original MSASCui.exe is an important part of Windows and rarely causes problems. The MSASCui.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 866,584 bytes (32% of all occurrences), 1,008,184 bytes and 20 more variants. 
There is an icon for this program on the taskbar next to the clock. MSASCui.exe is certified by a trustworthy company. It is a trustworthy file from Microsoft. MSASCui.exe is able to monitor applications. Therefore the technical security rating is 3% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you have any problems with MSASCui.exe, you may also uninstall the associated program (Start > Control Panel > Uninstall a Program > Windows Defender), turn to the software developer, Microsoft, for advice or search for an update on the vendor’s website.

Recommended: Identify MSASCui.exe related errors

Important: Some malware camouflages itself as MSASCui.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Packed.Win32.Katusha.j or Trojan.Win32.Inject.boae (detected by Kaspersky), and Packed.Mystic!gen4 or Trojan.Gen (detected by Symantec). Therefore, you should check the MSASCui.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

Windows Defender
Windows Defender User Interface
Assuming that you have the original distributed product, it is an important part of the Windows malware defense. It should be left in place even if you have another third party antivirus product installed.
  ota   (further information)
It is an part of Windows Defender Antispyware But malware can be named anything
It notice was always popping up on my computer. I deleted the scheduled tasks in task manager and it stopped.
I tried to remove Windows Defender, thought I accomplished it number times. I have a Dell at home. (PC) and a HD Mac at work.... Windows defender and all their BS with weird files we don't understand... Everyone has start up problems.. You have to have a virus protection program like norton or better. But Macs are the way to go if you wanna stay virus free. Windows has to be in on it with the anti virus companies + all the hackers if they don't send out "their own"
uses a lot of cpu
been using windows defender for months & this process shows up just today??
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of MSASCui.exe: based on 65 votes with 9 reviews. 48 users think MSASCui.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 5 users think it's neither essential nor dangerous. 2 users suspect danger. 9 users think MSASCui.exe is dangerous and recommend removing it. 9 users don't grade MSASCui.exe ("not sure about it").

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Best practices for resolving MSASCui issues

A clean and tidy computer is the key requirement for avoiding problems with MSASCui. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the MSASCui.exe process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

MSASCui.exe [all]