Windows 10: KB4078130 Update to Disable Mitigation against Spectre, Variant 2

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  1. Posts : 302
    Windows 10 Home April 2018 Update 64-bit
       29 Jan 2018 #10

    Glad I didn't touch any of the microcookies from Intel then.
      My ComputerSystem Spec


  2. Posts : 263
    Windows 10 Pro x64 16299.431
       29 Jan 2018 #11

    The update changes the "FeatureSettingsOverride" setting from 0 to 1.

    Code:
    Windows Registry Editor Version 5.00
    
    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management]
    "FeatureSettingsOverride"=dword:00000001
    "FeatureSettingsOverrideMask"=dword:00000003
    
    ; 3 = Disable both
    ; 2 = Disable meltdown (Kernel VA Shadow)
    ; 1 = Disable spectre (Branch Target Injection)
    ; 0 = Enable both
    ;
    ; FeatureSettingsOverrideMask is always 3
      My ComputersSystem Spec


  3. Posts : 7,474
    Windows 10 Pro x64 Build 1709
       29 Jan 2018 #12

    Thanks. I just checked and both dwords are set to 1.
      My ComputerSystem Spec

  4.    29 Jan 2018 #13

    Not updating anything else until the likes of Intel and Microsoft can demonstrate that they actually know what they doing, which so far I'm seeing little signs of.
      My ComputersSystem Spec


  5. Posts : 7,474
    Windows 10 Pro x64 Build 1709
       29 Jan 2018 #14

      My ComputerSystem Spec


  6. Posts : 542
    Windows 10 Pro x64
       29 Jan 2018 #15

    Polo6RGTI said: View Post
    The update changes the "FeatureSettingsOverride" setting from 0 to 1.

    Code:
    Windows Registry Editor Version 5.00
    
    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management]
    "FeatureSettingsOverride"=dword:00000001
    "FeatureSettingsOverrideMask"=dword:00000003
    
    ; 3 = Disable both
    ; 2 = Disable meltdown (Kernel VA Shadow)
    ; 1 = Disable spectre (Branch Target Injection)
    ; 0 = Enable both
    ;
    ; FeatureSettingsOverrideMask is always 3
    Hah! I wondered what it did. Suspected this since it appeared to do nothing when I ran the executable.
    I had already disabled that Spectre variant through the registry when word first same out.
      My ComputerSystem Spec

  7.    29 Jan 2018 #16

    I downloaded it and then tried to open the downloaded file, but nothing happened. What do I need to do after I download it?
      My ComputerSystem Spec


  8. Posts : 542
    Windows 10 Pro x64
       29 Jan 2018 #17

    ChristineL said: View Post
    I downloaded it and then tried to open the downloaded file, but nothing happened. What do I need to do after I download it?
    Apparently all it does is change a registry setting, and it probably did that.
      My ComputerSystem Spec


  • Posts : 1,524
    WinX Pro x64 IP current
       30 Jan 2018 #18

    I've got Meltdown patches in place now, according to InSpectre, but not Spectre patches. So, I have no need to install this in the first place.
      My ComputersSystem Spec

  •    30 Jan 2018 #19

    johngalt said: View Post
    I've got Meltdown patches in place now, according to InSpectre, but not Spectre patches. So, I have no need to install this in the first place.
      My ComputerSystem Spec


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