Turn On or Off Windows Defender Application Guard in Windows 10  

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  1.    #10

    I would *love* to enable this feature and give it a try but I rely on VMware Workstation every single day (and am not willing to use HyperV for my VMs) so will I ever be able to use WDAG with VMware Workstation installed as well?
      My ComputerSystem Spec

  2. Cliff S's Avatar
    Posts : 24,691
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       #11

    Another interesting find Shawn.
    In C:\Windows\Containers there are two .wim files of Windows.
    Click image for larger version. 

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    Maybe to be mounted as a sandbox pseudo VM`?
      My ComputersSystem Spec

  3. Brink's Avatar
    Posts : 39,747
    64-bit Windows 10 Pro build 18917
    Thread Starter
       #12

    Not sure, but it would be interesting to find more official info about "WindowsDefenderApplicationGuard.wim".
      My ComputersSystem Spec

  4. Cliff S's Avatar
    Posts : 24,691
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       #13

    Brink said: View Post
    Not sure, but it would be interesting to find more official info about "WindowsDefenderApplicationGuard.wim".
    ,wim's are @Kari's specialty, maybe he could create a VM with both.
      My ComputersSystem Spec

  5. AndreTen's Avatar
    Posts : 17,358
    Windows 10 (Pro and Insider Pro)
       #14

    Cliff S said: View Post
    Another interesting find Shawn.
    In C:\Windows\Containers there are two .wim files of Windows.
    Click image for larger version. 

Name:	Image 002.png 
Views:	205 
Size:	185.3 KB 
ID:	184790

    Maybe to be mounted as a sandbox pseudo VM`?
    Brink said: View Post
    Not sure, but it would be interesting to find more official info about "WindowsDefenderApplicationGuard.wim".
    This could be for :
    Name:  image.png
Views: 1068
Size:  16.7 KB
      My ComputersSystem Spec

  6. Cliff S's Avatar
    Posts : 24,691
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       #15

    AndreTen said: View Post
    This could be for :
    Name:  image.png
Views: 1068
Size:  16.7 KB

    I bet you're right Andre.
    Windows keeps features compressed until they are turned on, either at OOBE or later by the user.
    And .wim is basically a glorified zip format.
      My ComputersSystem Spec


  7. Posts : 37
    win10 insider Enterprise
       #16

    I enabled it for about a hour or two and mainly watched heating on the cpu as I browsed around. CPU heats up faster and higher when loading a new page and maybe when actively browsing it stays up a slight amount but cools to normal when sitting and just reading a webpage. Didn't notice any added slowness to page loadings - and then finally simply reimaged my system to clean it all out because mainly it wont allow browser extensions and I need my adblocker.

    I didn't enable the Hyper-V in programs & features yet it seems to work as described.
    It built a folder "C:\ProgramData\Microsoft\HVSI" showing about 3.5gb containing two .vhx type virtual files, yet my C;\ showed it had increased only about 1gb in total used space.

    Was surprised I had to manually switch to the secured edge, thought it would automatically open everything into it. Didn't take the time to investigate the group policy settings before ending my test drive.
      My ComputerSystem Spec


  8. Cliff S's Avatar
    Posts : 24,691
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       #17

    Decided to finally try it out, and it won't start, I keep getting this, and in Feedback hub there are many, many others like me.

    WDAG Report - Container: Error: 0x80070057, Ext error: 0x00000001; RDP: Error: 0x00000000, Ext error: 0x00000000 Location: 0x00000000
    Click image for larger version. 

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Views:	24 
Size:	76.0 KB 
ID:	229146
      My ComputersSystem Spec

  9. Cliff S's Avatar
    Posts : 24,691
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       #18

    Click image for larger version. 

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ID:	231112

    Click image for larger version. 

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    I'm still getting errors when trying to open a WDAG window
    Click image for larger version. 

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    I have it turned on, of course using the tutorial, that installed it, but it hangs at 50% then the error.
    I then opened GPEdit and "Enabled" it there too, but still get an error when opening a window Click image for larger version. 

Name:	image.png 
Views:	19 
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ID:	231111
    Paste into Feedback Hub and you can see all the posts about this:
    WDAG Report - Container: Error: 0x80070057, Ext error: 0x00000001; RDP: Error: 0x00000000, Ext error: 0x00000000 Location: 0x00000000

    Any ideas Shawn?
    I'm not using any 3rd party AV, only Defender.
    I did have a problem getting Core Isolation to work through the UI before, but RegEdit got that turned on.

    I'm starting to wonder if there Is a compatibility problem with the 9900K(maybe 8th Gen CPU's in general maybe) memory controller and Win10's advanced virtualization security options(not with Hyper-V VMs though), as they have hardware based changes to how the 3 levels of cache are handled for Spectre & Meltdown.
      My ComputersSystem Spec

  10. Brink's Avatar
    Posts : 39,747
    64-bit Windows 10 Pro build 18917
    Thread Starter
       #19

    Hey Cliff,

    It sounds like it may be a bug. Might send feedback to Microsoft about it to help make them aware in case others are having the same issue.
      My ComputersSystem Spec


 
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