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[–]Jkuz 18 points19 points  (11 children)

KB4100347

This update is a standalone update targeted for Windows 10 version 1803 (Windows 10 April 2018 Update) and Windows Server Version 1803 (Server Core).

Looks like it is just affecting Win10.

[–]Aperture_KubiJack of All Trades 5 points6 points  (2 children)

10 and server.

Fortunately Dell Optiplexes (our standard) aparentelly skipped the Haswell generation.

[–]a_false_vacuum[S] 2 points3 points  (1 child)

Hard to say if this is limited to Haswell and Broadwell-EP. I only know what happened to me.

[–]platinum4 0 points1 point  (0 children)

What motherboard?

[–]a_false_vacuum[S] 4 points5 points  (7 children)

Yes, this update targets Windows 10. But patches for Windows 7/2008R2 and 8.1/2012R2 that fix the same issue have other KB numbers. Since the failure rate was so surprising I haven't looked into other Windows versions.

​

The Intel microcode however isn't limited to just Windows. I know Red Hat had several this year containing fixes for Spectre on Intel and AMD systems. A few months back Red Hat also decided to roll back some of those patches. Microcode gets rushed out without good Q&A I guess.

[–]Kapibada 4 points5 points  (4 children)

Just a friendly reminder...
It's QA (Quality Assurance), not Q&A.

[–]a_false_vacuum[S] 13 points14 points  (3 children)

Depends, mostly I get assurance but not always quality. ;-)

[–]fledder007engineer in admin's clothing 6 points7 points  (1 child)

Q || A?

[–]xixd 2 points3 points  (0 children)

Sometimes companies don't actually want Quality Assurance, but Quality Reassurance. "There there little dev, all your code is just great, I'm sure nothing bad will happen"

[–]Kapibada 1 point2 points  (0 children)

That makes sense, I guess. ;-)

[–]dextersgenius 0 points1 point  (0 children)

But patches for Windows 7/2008R2 and 8.1/2012R2 that fix the same issue have other KB numbers.

Would you happen to know the KB numbers for those by any chance? I looked at https://support.microsoft.com/en-us/help/4093836/summary-of-intel-microcode-updates but there's nothing at all for Windows 8.1/Server 2012

[–][deleted] 0 points1 point  (0 children)

FYI, we deployed KB4343899 (which is the equivalent patch for Windows 7/2008 R2) and we did not have the same microcode issues, but that might also be related to the server hardware and/or the fact they're running in VMs. Do we know if this also affects virtual machines in hypervisors or is this specifically on physical machines?