Windows 10: KB4078407 Update to enable mitigation against Spectre, Variant 2

This update does not provide protection against Spectre Variant 2. All it does is turn on protection if you had previously disabled it because of a bad BIOS update.

 

Source: https://support.microsoft.com/en-us/...ctre-variant-2


Direct download link for KB4078407 EXE file from Microsoft Update Catalog:

*Arrow Download KB4078407 MSU for Windows 10,Windows 10 LTSB,Windows Server 2016 - 24 KB

:)

 

Windows freeze

If those other fixes don't work, try this:

2018 01 29- KB 4078130- UPDATE TO DISABLE MITIGATION AGAINST SPECTRE, VARIANT 2 – INTEL BUG

https://support.microsoft.com/en-us/help/407813...

Check Update History to confirm you have KB 4078130 installed. Rather than uninstalling KB4054892, which fixed other problems as well as creating the reboot problem (and others), MS has created KB4078130 to fix the problems/

 

Printing error to large format printer on network.

2018 01 29- KB 4078130- UPDATE TO DISABLE MITIGATION AGAINST SPECTRE, VARIANT 2

https://support.microsoft.com/en-us/help/407813...

Check Update History to confirm you have KB4054892 installed. Rather than uninstalling KB4054892, which fixed other problems as well as creating the reboot problem (and others), MS has created this update to fix the problems/

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Optional Reading

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If you are interested, the “official” documentation for the above fix is in the links below.

2018 01 29- “HIGHER THAN EXPECTED REBOOTS AND OTHER UNPREDICTABLE SYSTEM BEHAVIOR” - UPDATE TO DISABLE MITIGATION AGAINST SPECTRE, VARIANT 2 – FIX PROBLEM CREATED BY WIN UPDATE KB4056892

https://support.microsoft.com/en-us/help/407813...

In December very significant 3 bugs / defects in the “CPU” / computer chip made by Intel were announced. In January some more bugs were announced. MS and Intel have released some updates to partially patch these problems. But the patches were less than successful.
One of the side effects is unexpected reboots of the computer (sound familiar).

So read the link above, and below, for more specific details about the problem and the update that may be able to partially fix the Intel inflicted problem.

2018 01 22- ROOT CAUSE OF REBOOT ISSUE IDENTIFIED BY INTEL – BAD UPDATE F

https://newsroom.intel.com/news/root-cause-of-r...

JANUARY 3, 2018—KB4056892 (OS BUILD 16299.192) INCLUDES MITIGATION AGAINST INTEL SPECTRE, VARIANT 2 (WHICH IS CAUSING PROBLEMS)

https://support.microsoft.com/en-us/help/405689...

Applies to: Windows 10 version 1709

The documentation doesn’t actually mention the Intel bug fix … <sigh>

 

Got to this thread courtesy of @ddelo from Cumulative Update KB4093105 Windows 10 v1709 Build 16299.402 - Apr. 23 - Page 13 - Windows 10 Forums

Basically this update KB4078407 didn't work on my Tosh laptop (details in the above thread if anyone is interested)
I notice it's NOT an MS Update Standalone Package - just a 25K exe file.

I tried installing it, ran Gibson's InSpectre - still not protected.

I then tried installing KB4090007 and then running KB4078407. Still no go.

This site Microsoft Releases Two New Windows Updates Containing New Spectre 2 Mitigations led me to KB4091666.

This IS a MS Update Standalone Package but sadly wouldn't even install giving me this message





Back to the drawing board*cry

 

I tried the update KB4093112 that is for the Spectre VII and it won't install on my AMD 6 core machine :O
Originally AMD CPUs were not supposed to be affected but I got the GRC InSpectre.exe and ran it but still my system is vulnerable.
Oh well. *Rolleyes

 

After applied the update;

FeatureSettingOverride 0

FeatureSettingOverrideMask 2