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What is MSASCui.exe?

Part of Windows Defender by Microsoft

What is it?

MSASCui.exe is the Windows Defender User Interface, the main UI for Windows Defender.
Description of msascui.exe from Microsoft
Windows Defender is a free program that helps you stay productive by protecting your computer against pop-ups, slow performance and security threats caused by spyware and other potentially unwanted software. Windows Defender provides real-time protection for your home or small business PC that guards against viruses, spyware, and other malicious software. Windows Defender is a free* download from Microsoft that is simple to install, easy to use, and is automatically updated to protect your PC with the latest technology. Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times. Windows Defender is able to detect and remove more threats posed by spyware and other potentially unwanted software. Real Time Protection has also been enhanced to better monitor key points in the operating system for changes.
(msascui.exe is a system file that is installed with Windows)
Download Boost and enjoy your PC. Speed up Windows Defender and optimize your PC.

How does msascui.exe run?

Process - MSASCui.exe is an instance of a running program. This 64-bit program executes with the privileges as the currently logged in user account. MSASCui.exe is executed by the process explorer.exe (Windows Explorer by Microsoft).

How does msascui.exe start?

Startup files (all users) run - MSASCui.exe is registered with the run identifier 'Windows Defender' and the execution command 'C:\Program Files\Windows Defender\MSASCui.exe -hide' in the Windows registry HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run. Run keys are startup registry keys that are used to launch an application automatically when any Windows user logs into Windows.


What is the community is seeing?What is the community is doing?
About 0.3% of all Boost users have the msascui.exe process running.Of the 0.3% of msascui.exe users, 16.7% have disabled it.
How resource intensive is MSASCui.exe?
Comparison based on the average resource utilization across all programs.
0.03473% CPU347308.7%
Average CPU utilization across all programs is 0.00001%.
11.8 MB RAM54.8%
Average private memory utilization across all programs is 21.53 MB.
 2 /min0.1%
Average I/O read and write operations for all programs is 2,253 per minute.
119 GDI objects79.3%
Average number of GUI GDI and USER objects for all programs is 150.
Typical file (disk image) location:
C:\Program Files\windows defender\msascui.exe

What else is related?

What Windows OS versions does this run on?

Windows Vista (TM) Home Premium (6.0.6002.131072)
Windows Vista (TM) Ultimate (6.0.6002.131072)
Windows Vista™ Home Premium (6.0.6002.131072)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: MSASCui.exe
Publisher: Microsoft Corporation (verified)
Name: Windows Defender
Description: Windows Defender User Interface
Version: 1.1.1600.0
Size: 1.51 MB
Original file name: MSASCUI.exe
Windows file protection: Yes

Digital certificate

Resource utilization

CPU utilization averages
Total CPU: 0.0715853893%
Privileged CPU: 0.0368545171%
User CPU: 0.03473087213086%
Privileged CPU time: 781752.21 ms
Privileged CPU time /min: 21 ms
CPU cycle count: 855,753,608
CPU cycle count /min: 231,529,643
Memory utilization averages
Committed memory: 118.2 MB
Peak committed memory: 123.66 MB
Paged memory: 11.8 MB
Peak paged memory: 12.15 MB
Paged system memory: 236.22 KB
Non-paged system memory: 29.87 KB
Working set memory: 17.03 MB
Peak working set memory: 17.05 MB
Min working set memory: 14.28 MB
Private memory: 11.8 MB
Page faults: 7,057
Page faults /min: 1,606
Process I/O averages
Total read operations: 4
Read operations /min: 1
Total read transfer: 1.18 KB
Read transfer /min: 328 Bytes
Total write operations: 3
Write operations /min: 1
Total write transfer: 1.06 KB
Write transfer /min: 292 Bytes
Total other operations: 387
Other operations /min: 105
Total other transfer: 8.66 KB
Other Transfer /min: 2.34 KB
GUI Object Averages
GDI objects: 119
USER objects: 115
Handle count average: 492
Thread count average: 13
Thread resource averages

Process details

Runs as (owner): User
Integrety level: Undefined
Windows platform: 64-bit
System Tray: Yes
Parent Process
Process Command
"C:\Program Files\Windows Defender\MSASCui.exe" -hide

Startup files (all users) run details

Name: Windows Defender
Command: C:\Program Files\Windows Defender\MSASCui.exe -hide

Image hashes

MD5: 48dd40677817ce1053c2315f5a87e0d3
SHA-1: 5202f110dbf904775055f663646a429293bf6402
SHA-256: 27e6d67e0c62543a5b0bb14814a17240481ceed227a4a58e3e3bef122039024f

PE image details

CLR assembly: Yes
Subsystem: Windows GUI
Langauge*: Microsoft Visual C# / Basic .NET
File packed: No
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