Microsoft re-releases Intel microcode patches for all versions of Win10

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Last night, Microsoft released these new Intel microcode patches: KB 4100347 for Win10 1803 KB 4090007 for Win10 1709 KB 4091663 for Win10 1703 KB 409
[See the full post at: Microsoft re-releases Intel microcode patches for all versions of Win10]

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PhotM

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Was just offered KB4100347 for Windows 10 1803 today. My Win 10 is a test system set up to ask to download using group policy. The original microcode patch was installed in May 2018 with no issues (I believe it was obtained from the MS catalog). Since this is a test machine, I allowed the newly re-issued patch to install. No issues noted.
I have not tried to uninstall, but wanted to mention that the kb# is listed as an update available for uninstall in windows update. Running Steve Gibson’s Inspectre utility indicates “Yes” for protection from Spectre and Meltdown, and of course “Slower” for performance. My system is an i5 Intel 64 bit.

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there are “many generations” of Intel core i5 processors, Sueska. use the CPU-Z tool to identify the model & speed of the Intel i5 CPU.

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Sueska

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https://en.wikipedia.org/wiki/List_of_Intel_Core_i5_microprocessors

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Sueska

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Additional info for Sueska’s post – My CPU is Ivy Bridge generation Intel i5 3570K 3.4 GHz

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FYI – some more details Windows 10: Microcode updates (09/13/2018) & WSUS chaos

Ex Microsoft Windows (Insider) MVP, Microsoft Answers Community Moderator, Blogger, Book author

https://www.borncity.com/win/

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woody

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article from Softpedia news by Bogdan Popa about the re-released KB4100347 & other Intel microcode updates for Windows 10:
https://news.softpedia.com/news/microsoft-re-releases-kb4100347-for-windows-10-version-1803-522694.shtml

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Loads WRONG microcode revision!

Windows 10 KB4100347 contains a new Intel microcode library to address Spectre vulnerabilities.

On a Broadwell E processor (CPUID 406F1) this library loads microcode revision 0xB00002C at boot. However, Intel has only released microcode revision 0xB00002E as per Microcode Update Guidance dated Aug 2018!

Final note:
It is widely known by now that KB4100347 breaks the overclocking capabilities with most X99 motherboard / Broadwell E combos. While incorporating the new microcode into the BIOS may be a remedy on some systems, this is out of reach for most users.

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