KB4100347 Intel microcode updates for Windows 10 v1803 - September 13

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  1. Access Denied's Avatar
    Posts : 5,144
    Win10 RS5 x64
       16 May 2018 #30

    Bree said: View Post
    Makes no difference how you get the microcode, a bios update or WU. The key factor is the processor architecture. It also very much depends on what you use the PC for, not all processes are affected equally. This blog from Microsoft has more details...
    https://cloudblogs.microsoft.com/mic...ndows-systems/

    Personally, InSpectre has said 'Slower' for my Intel Pentium B950, CPU ID 206A7 even before the microcode update. It's not noticeably slower in use though.
    It was pretty bad for my system. It would take things 3-4 seconds longer to load/open.
      My ComputerSystem Spec

  2.    16 May 2018 #31

    ddelo said: View Post
    AD, if WU offers it, it won't make any difference to the performance problem you're experiencing with the manual update. Check your manufacturer's site for an actual BIOS update. It's the recommended update. The MS microcode update is a workaround, until an actual BIOS update is provided by the manufacturer.

    I what sense is it a "workaround"?
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  3.    16 May 2018 #32

    Ground Sloth said: View Post
    I what sense is it a "workaround"?
    Because it's software loaded at boot which means it's OS specific. If someone wants to run another OS (e.g. Linux) he's not protected. That's why the recommended update is at BIOS level.
      My ComputerSystem Spec

  4.    16 May 2018 #33

    ddelo said: View Post
    Because it's software loaded at boot which means it's OS specific. If someone wants to run another OS (e.g. Linux) he's not protected. That's why the recommended update is at BIOS level.

    Correct. But as far as I know, Windows has the ability to load the CPU microcode update into memory on the CPU during boot just like the BIOS. I haven't found a source that says it does something different (like emulate the microcode).
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  5. Bree's Avatar
    Posts : 9,588
    10 Home x64 (1809) (10 Pro on 2nd pc)
       16 May 2018 #34

    ddelo said: View Post
    ...That's why the recommended update is at BIOS level.
    Some of us don't have that option, our OEM's can't be bothered issuing a bios update for their older systems...
      My ComputersSystem Spec

  6.    16 May 2018 #35

    Ground Sloth said: View Post
    Correct. But as far as I know, Windows has the ability to load the CPU microcode update into memory on the CPU during boot just like the BIOS. I haven't found a source that says it does something different (like emulate the microcode).
    No, no when I said workaround, I meant not the proper solution. The Microsoft provided microcode, loaded at boot time, is the same as the one the manufacturer should use to update the BIOS. It's perfectly OK to use, with no side effects!
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  7.    16 May 2018 #36

    Bree said: View Post
    Some of us don't have that option, our OEM's can't be bothered issuing a bios update for their older systems...
    I know pal....Toshiba! As I said before, all manufacturers take the opportunity, from the vulnerabilities, to tell you to buy a new notebook.
    Last edited by ddelo; 16 May 2018 at 14:25.
      My ComputerSystem Spec

  8.    16 May 2018 #37

    This is what I got from InSpectre after applying KB4100347 and I owe a big "thank you" to @Shawn :

    Click image for larger version. 

Name:	InSpectre After installing KB4100347.png 
Views:	114 
Size:	48.6 KB 
ID:	188984
    Last edited by IronZorg89; 16 May 2018 at 17:03.
      My ComputerSystem Spec

  9.    16 May 2018 #38

    Bree said: View Post
    Some of us don't have that option, our OEM's can't be bothered issuing a bios update for their older systems...
    In a sense it is probably a good thing since you have a "closed system". Here is an excerpt of what they say about older systems:

    “After a comprehensive investigation of the microarchitectures and microcode capabilities for these products, Intel has determined to not release microcode updates for these products for one or more reasons,” the company noted.
    The reasons include micro-architectural characteristics that preclude a practical implementation of features mitigating Variant 2 (CVE-2017-5715), limited Commercially Available System Software support, and the fact that, “based on customer inputs, most of these products are implemented as ‘closed systems’ and therefore are expected to have a lower likelihood of exposure to these vulnerabilities.”

    You can read the whole article from the following link:

    https://www.helpnetsecurity.com/2018...ocode-updates/
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  10. Bree's Avatar
    Posts : 9,588
    10 Home x64 (1809) (10 Pro on 2nd pc)
       16 May 2018 #39

    IronZorg89 said: View Post
    In a sense it is probably a good thing since you have a "closed system"....
    Unfortunately my processor is quite new enough for Intel to have released microcode for it, but Toshiba have ruled out putting Intel's work into any bios updates for their 'older' machines.

    Fortunately Microsoft are not so narrow-minded and I now have the microcode
      My ComputersSystem Spec


 
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