What Is Msascuil.exe? Is It Safe or a Virus? (Guide)

Msascuil has been developed by Microsoft Corporation as a secure executable program. This executable was initially released in Redstone 1, 2016 and is running on Windows 8, Windows 10 and others at the start of the program.

This icon is used to view the antivirus software icon of Windows, also called the Windows Defender Center. Here in this article, we are going to discuss some of the important aspects of Msascuil.exe, so read this article with full attention!

What Is Msascuil.exe?

Image source: www.file.net

For the 2016 “Redstone 1” anniversary update on Windows 10, Microsoft built a file “MSASCuiL.exe.” The icon for the Windows Defender antivirus software can be seen (or was) in a Windows taskbar, also called the Windows Defender Center.

(Allegedly integrated into SecurityHealthService as early as May 2017.) If this is the real Microsoft application, you can find it in the following folder: C:\Program Files\Windows Defender.

If it is not in that particular file directory, however, you might have a fake application which is disguised as the original one. We potentially think about a virus in this situation.

Another symbolic sign you may point to is its file size to determine its validity. The original should be in the ~483 and ~631 bytes range. Furthermore, you may be certain that this file is a malicious program if you find it on your device and have an older Windows version (e.g. Vista, XP, 7).

However, we believe it is important to alert you again of the status of this executable. You are assured that your device security is not protected by the MSASCuiL.exe file.

Otherwise, you will place your PC at risk of being compromised by malware if you uninstall the latest Microsoft application. An Executable file is provided in the .exe extension of a filename. In certain cases, executable files will damage your Computer.

Please read the following to determine whether msascuil.exe is a trojan that you should uninstall from your machine or if it is a file from the Windows OS or a trustworthy application.

Msascuil.exe File Information

Msascuil.exe File Information

The windows defender notification icon or windows defender or host process for windows services is a process that belongs to the software of Microsoft windows OS by Microsoft

Description: The original Microsoft msascuil.exe is an essential component of Windows but is also troublesome.

The file msascuil.exe is in the subfolder ‘C:\Program Files’ (C:\Program Files\Windows Defender\ is commonly used).

These applications will end with the installation of different free programs in your system. For eg, from an open-source download platform or torrent site, you may have obtained some device optimization tool or similar.

The configuration of this program may have included MSASCuiL.exe. And if this feature was used by default or automatically, a package was installed in applications alongside it.

That is why you can always pick Custom or Advanced settings if you install any new program type on your device. This will allow you to monitor more the process and prevent the integration of additional components.

Established Windows 10/8/7/XP file sizes are 631.808 bytes (34%), 630.168 bytes and 638.872 bytes. The Windows system file is Msascuil.exe. A trustworthy Microsoft file is Msascuil.exe.

There is no clear window in the program. Digital sign of the file. Applications can be tracked by Msascuil.exe. Consequently, the technological safety ranking is 3% dangerous, but you can also read user feedback.

Runtime Errors

Runtime Errors

Application errors arise during “runtime,” that’s Windows errors. This means that when MSASCuiL.exe is being attempted to be loaded either while Windows is starting or in certain instances already running, it causes these EXE errors.

Runtime errors are the most common type of a Windows-based EXE error. For most cases, when running the program, MSASCuiL.exe errors may result in an unexpected end to the program.

Many of the error messages on MSASCuiL.exe show that Windows may not either locate this file on startup, or the file is invalid and the startup phase is prematurely aborted.

In general, without fixing these errors, Windows will not be able to open.

Here are some of the common messages!

  • Poor Photo-MSASCuiL.exe.
  • Software Fehler MSASCuiL.exe.
  • Can not find MSASCuiL.exe.
  • Can not install MSASCuiL.exe.
  • Can not start MSASCuiL.exe. Not registered class.
  • Can not start MSASCuiL.exe.
  • The proper initialization of MSASCuiL.exe failed.
  • MSASCuiL.exe has a question and must be fixed. The disappointment we are sorry for.

To correctly fix these errors, it is important to determine the source of the MSASCuiL.exe error.

Although MSASCuiL.exe has most of these EXE errors during start-up, you will often encounter an execution error while using Windows10.

This can be triggered by mis programming on Microsoft’s behalf, incompatible software or plug-ins from third parties, or faulty and obsolete hardware.

This kind of MSASCuiL.exe errors can also occur if a malware intrusion has accidentally triggered, destroyed, or harmed it.

It is therefore important to ensure the anti-virus is maintained and regularly scanned.

Viruses with the Same File Name

Viruses with the Same File Name

Is it a virus?  Nope, that’s not it. The genuine msascuil.exe file is a protected system process named ‘Windows Defender Notification Icon’ by Microsoft Windows.

Nevertheless, malware writers like viruses, worms and trojans intentionally call their processes to avoid detection.

For example, PUA. Generic (Symantec detected) and non-virus: HEUR: RiskTool.

Win32.Generic or HEUR: Trojan. Win32. Generics (Kaspersky detected) are viruses with the same file name.

Update EXE

Update  EXE is the Microsoft Corporation’s official executable file. This process is known as the Windows Service Pack Setup and is a Windows Operating System software application.

C:\Program files are often stored. In the process of Fix, cybercriminals may find an alternative to mimicking malware.

Steps to Remove

Here are a few steps that will help you remove Msascuil.exe errors

Methode #1: (To restore the system (Vista, 7, 8, and 10) Windows XP)

  • Click the Start button for Windows
  • Type system restore in the search box and press enter
  • When you find the search results click to system restore
  • Then enter the password if needed
  • Follow the system restore wizard’s steps to choose an accurate restore point
  • Lastly, restore the PC to that backup image

Methode #2: ( BY Running System file checker )

System File Checker is a tool that helps you to search and restore corrupted device files, included with every Windows update. Using SFC to patch MSASCuiL.exe (Windows XP, Vista, 7, 8 and 10) that is missing or corrupt:

  • Click the Start button for Windows
  • Type cmd in the search bar but do not press enter
  • Press and hold “CTRL-Shift” when clicking “ENTER.” “On your keyboard
  • Your screen will appear a dialogue box
  • Click yes in that box
  • You’ll see blinking cursor with a black screen
  • Type SFC/scannow in that black screen then press enter
  • SFC will start scanning the Msascuil.exe errors and the files related to it
  • Lastly, follow the instructions at that time while on-screen to complete the process

Methode #3: ( By windows update )

It would be a good idea to run the Windows Update if the first two steps did not solve the problem.

The Windows Operating System can be provided for several of the MSASCuiL.exe error messages that are encountered. Please take these simple steps to execute Windows Update:

  • Click the Start button for Windows
  • Type update in the search box and then press enter
  • Select check for updates at the windows update dialogue box or the related button according to your version of windows
  • If the updates are available then click to install updates
  • Lastly, when the process is done restart your PC

Best Practices For Resolving Msascuil Issues

Resolving Msascuil Issues

The trick to preventing Msascuil problems is to have a safe and secure machine. This means that you run a malware scan, clean the disk with 

  1. cleanmgr
  2. SFC/Scannow
  3. Check autostart programs by uninstalling the programs that you don’t need
  4. By activating windows using MSConfig
  5. By automatic update by regular backups and restore points
  6. Resmon to determine the processes that trigger your problem.
  7. DISM.exe, Online / Cleanup / RestoreHealth even for serious issues than reinstalling Windows. Except for Windows 8 and later versions, you can do so. This means that the operating system can be patched without losing data.

You are better off fixing the installation or running 

When you have a problem, try to recall what you did last or what you did last before the problem was first encountered. 

The following programs have proven useful for you to evaluate the msascuil.exe mechanism on your computer: the Security Task Manager shows all work on Windows, including secret embedded processes, e.g. keys or browsers, or Autostart entries.

A single safety risk assessment indicates the possibility of spyware, malware or Trojan being a possible operation.

Malwarebytes Anti-viruses detects and prevents spyware, adware, trojans, keyloggers, viruses and hard drive trackers.


Having said that, the analysis for the Msascuil.exe came to an end. We hope that this article was beneficial for you as we tried our best to educate you with all the important aspects related to this program.

Click Here to Run a free Scan for Msascuil.exe Related Errors.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.