Turn On or Off Core Isolation Memory Integrity in Windows 10  

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  1. Cliff S's Avatar
    Posts : 22,026
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       22 May 2018 #100

    Brink said: View Post
    Thank you for confirming Cliff.
    You're welcome Shawn.
    I was curious if it would carry over, as my host has it turned on too, and through the whole upgrade I was waiting for a memory GSOD, because of both being on. But it upgraded like always.
      My ComputersSystem Spec

  2.    23 May 2018 #101

    I'm wondering; would it be possible to get any virtual machine program like Virtualbox to work with this enabled? Right now it just tells me Virtualization is already in use...
      My ComputerSystem Spec


  3. Posts : 14
    Windows 10 1803 & Win10 Insider
       23 May 2018 #102

    A sideways answer is that VMware still has support for "binary translation" for its 32bit guests. This is the way that virtualization used to work before VT-x/AMD-v. On Intel CPU's where VT-x was originally introduced it was about as fast with or without. Of course this forgoes more recent virtualization speed-up instructions like VT-d and EPT, and you can't run 64bit guests.

    Edit: VirtualBox calls this "binary patching", it should work for 32bit guests with 1 CPU.

    I would also think that Hyper-V itself would still have support for running 32 & 64bit guests. This would require Windows 10 Professional (or Education / Enterprise) and 4GB of RAM:



    If you really require Virtualbox and 64bit: another lame way could be to turn on virtualization instructions inside a Hyper-V guest, and then run Virtualbox in that guest. It would require at least Windows 10 Pro and an Intel CPU with VT-x and EPT.
    Last edited by Henk Poley; 23 May 2018 at 05:23.
      My ComputerSystem Spec

  4.    27 May 2018 #103

    great post, helped me a lot.

    After turning the option ON- I was getting constant BSOD after plugging phone to USB, every phone caused BSOD, turning it OFF by reg file was only option and did the job.

    Thanks.
      My ComputerSystem Spec

  5. Cliff S's Avatar
    Posts : 22,026
    Win10 Pro, Win10 Pro N, Win10 Home, Win10 Pro Insider Fast Ring, Windows 8.1 Pro, Ubuntu
       30 May 2018 #104

    I just got a notification in notification area from Feedback hub, re: there was a response to something I upvoted about core integrity not being able to be turned off/setting being managed by admin : Feedback Hub - Windows Insider

    Click image for larger version. 

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    Answer:
    Thank you for your feedback.
    We have fixed this issue in builds 17634 and higher
      My ComputersSystem Spec

  6. Brink's Avatar
    Posts : 33,787
    64-bit Windows 10 Pro build 18282
    Thread Starter
       30 May 2018 #105

      My ComputersSystem Spec

  7.    30 May 2018 #106

    It would be nice to fix it in the release branch, not the alpha only
      My ComputerSystem Spec

  8.    20 Jun 2018 #107

    I just updated my laptop to 1803 (17134.112).

    I turned Core Isolation on OK but it slows the PC booting. I now have the usual problem (to be fixed on Build 17636?) that I can't turn it off and see the message "This setting is managed by your administrator". This seems an obvious bug MS really should have fixed by now.

    Do I just turn it off using the reg file in Option 2? What benefits does Core Isolation add if you keep Defender fully up to date and are careful with browsing habits?
      My ComputersSystem Spec

  9. Brink's Avatar
    Posts : 33,787
    64-bit Windows 10 Pro build 18282
    Thread Starter
       20 Jun 2018 #108

    Hello Steve,

    Yeah, if you are unable to use Option One to turn it off, you could use step 3 in Option Two to do so instead.

    The link below can give you some more info and details about Core isolation, but it's basically additional security against kernal-level exploits.

    Windows Defender System Guard: Making a leap forward in platform security with memory integrity - Microsoft Tech Community - 167303
      My ComputersSystem Spec

  10.    20 Jun 2018 #109

    Brink said: View Post
    Hello Steve,

    Yeah, if you are unable to use Option One to turn it off, you could use step 3 in Option Two to do so instead.

    The link below can give you some more info and details about Core isolation, but it's basically additional security against kernal-level exploits.

    Windows Defender System Guard: Making a leap forward in platform security with memory integrity - Microsoft Tech Community - 167303
    I turned it off OK with your reg file.

    This feature does look useful so I'll re-enable it and see how I get on with the slower response.
      My ComputersSystem Spec


 
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