Replacement for MSASCui.exe in Windows 10 1809


  1. Posts : 29
    Windows 7
       #1

    Replacement for MSASCui.exe in Windows 10 1809


    Prior to Windows 10 1809, I used the command C:\Program Files\Windows Defender\MSASCui.exe to open the Windows Defender GUI. In 1809, that file doesn't exist. Does anyone know a command to open the GUI of Windows Security in 1809?
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  2. Bree's Avatar
    Posts : 18,691
    10 Home x64 (20H2) (10 Pro on 2nd pc)
       #2

    Bob Coleman said:
    Prior to Windows 10 1809, I used the command C:\Program Files\Windows Defender\MSASCui.exe to open the Windows Defender GUI. In 1809, that file doesn't exist. Does anyone know a command to open the GUI of Windows Security in 1809?

    Yes, you can use the URI to start it. In a command prompt use the command

    start windowsdefender:

    In a shortcut, just use windowsdefender:


    That, and other URIs can be found in this tutorial.

    Settings Pages List of URI Shortcuts in Windows 10 | Windows 10 Tutorials
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  3. Posts : 29
    Windows 7
    Thread Starter
       #3

    That, of coures, worked. Thanks and also for the link to the more general information on URIs.
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  4. Bree's Avatar
    Posts : 18,691
    10 Home x64 (20H2) (10 Pro on 2nd pc)
       #4

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  5. Posts : 10
    Windows 10 Pro x64 1803 build 17134.81
       #5

    Hi there! I also used "%ProgramFiles%\Windows Defender\MSASCui.exe" to launch Windows Defender, however i also used the "-UpdateAndQuickScan" parameter to launch Windows Defender GUI and do an update and Quick Scan.
    I need to replace the MSASCui.exe and the -UpdateAndQuickScan parameter, can someone help?
    I know i can use MpCmdRun.exe, but i want to be able to open the GUI instead of running on the Command Line...
    Thanks!!
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  6. Posts : 29
    Windows 7
    Thread Starter
       #6

    Necro said:
    Hi there! I also used "%ProgramFiles%\Windows Defender\MSASCui.exe" to launch Windows Defender, however i also used the "-UpdateAndQuickScan" parameter to launch Windows Defender GUI and do an update and Quick Scan.
    I need to replace the MSASCui.exe and the -UpdateAndQuickScan parameter, can someone help?
    I know i can use MpCmdRun.exe, but i want to be able to open the GUI instead of running on the Command Line...
    Thanks!!
    As can be deduced from the above, start windowsdefender: will open the GUI, but if there is any way to pass parameters, I don't know what it is.
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  7. Try3's Avatar
    Posts : 7,445
    Windows 10 Home x64 Version 20H2 Build 19042.928
       #7

    WD now adds & uses new versions of MpCmdRun.exe in new subfolders within C:\ProgramData\Microsoft\Windows Defender\Platform
    [it also keeps copies in a few other locations but this is the location it uses as you can see by checking the properties of the antimalware service executable in Task manager]
    - To run a scan, I use a batch file to identify the latest subfolder and then run a -scan command within that folder.
    - I use a similar method to update malware definitions

    Code:
    set GetLatestVersionPath="dir "C:\ProgramData\Microsoft\Windows Defender\Platform" /ad /od /b"
    FOR /F "tokens=*" %%i IN (' %GetLatestVersionPath% ') Do Set LatestVersionPath=%%i
    "C:\ProgramData\Microsoft\Windows Defender\Platform\%LatestVersionPath%\MpCmdRun.exe" -Scan -1
    These are useful switches
    -Scan -1 runs Quick scan
    -Scan -2 runs Full scan
    -SignatureUpdate
    updates the malware definitions


    You can get info on MpCmdRun command line switches in its own help info -
    First, go to the folder identified above then
    either
    [in a command window]
    enter the command MpCmdRun.exe /?
    or
    [in a PowerShell window]
    enter the command .\MpCmdRun.exe /?

    You can search the forum for more info - see, in particular, Schedule Scan in Windows Defender Antivirus - TenForumsTutorials
    There is also info at Use the command line to manage Windows Defender Antivirus - Microsoft Docs

    Denis
    Last edited by Try3; 04 May 2019 at 22:04.
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  8. Posts : 10
    Windows 10 Pro x64 1803 build 17134.81
       #8

    Hi there and thanks to both, however i was trying to find a way to, as previous Windows 10 versions, send parameters to Defender GUI, instead of running it on CMD...
    If someone knows a way to send parameters to the URI of any other way to launch the GUI and run a quick scan, i would appreciate!
    Thanks
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  9. hello10's Avatar
    Posts : 204
    Windows 10 Home x64
       #9

    ^
    If MSASCui.exe is missing, you can try pointing to SecurityHealthSystray.exe inside the system32 folder.
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