Windows 10: Microsoft releases microcode updates for Windows 10 version 1809 and newer

Microsoft released microcode updates, designed to protect Windows 10 systems against Spectre-based attacks, for Windows 10 version 1809, Windows 10 version 1903 and 1909, Windows 10 version 2004, 20H2 and 21H1 this week.

The microcode updates for all other Windows 10 versions have not been updated and remain on the November 2020 state.

Microcode updates come in two forms: as firmware updates or as updates for the operating system. The updates address flaws or issues in processors, and are loaded when the system is started.

Windows updates come with patches for Intel, mcupdate_GenuineIntel.dll, and AMD processors, mcupdate_AuthenticAMD.dll.

Important: Microsoft recommends that users/administrators verify that a particular update is designed for system hardware, in this case the processor, before installing it. The company lists supported processors on the support pages.

Microsoft will release the updated microcode patches for the listed Windows 10 versions via Windows Updates eventually. It may take a while before these are made available; administrators may download updates from the Microsoft Update Catalog already to install them manually on systems.

Here are the links to the Knowledgebase articles:

• Windows 10 version 2004, 20H2 and 21H1: KB4589212
• Windows 10 version 1903 and 1909: KB4589211
• Windows 10 version 1809: KB4589208

Intel CPU products mentioned on the support page of the latest update:

• 10th Generation Intel® Core™ Processor Family
• Comet Lake S (6+2)
• Comet Lake S (10+2)
• Comet Lake U62
• Comet Lake U6+2
• Ice Lake Y42/U42 ES2 SUP
• Lakefield

The Microsoft Update Catalog links are listed below:

• Windows 10 version 2004, 20H2 and 21H1: KB4589212
• Windows 10 version 1903 and 1909: KB4589211
• Windows 10 version 1809: KB4589208

Identify the right Windows 10 version and edition on the Microsoft Update Catalog website, e.g. Windows 10 version 20H2 with a 64-bit architecture, and the download button next to it afterwards.



The site opens a popup window with the download link. The msu files have a size between 2 and 3 Megabytes. All that is left to do after the download completes is to execute the downloaded file to install the update on the system.



The system needs to be restarted to complete the process.

Now You: do you install the microcode updates directly or wait for them to become available via Windows Update? (via Deskmodder)

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KB4465065 Intel Microcode Updates for Windows 10 v1809 - Sept. 26 Win Update

Microsoft appears to be in no rush to provide the microcode update from Intel except for users of older versions of Windows 10. Microsoft is repeating the mistake of telling users to get the microcode update from their device manufacturers through a BIOS/UEFI update. Only a small fraction of Windows users will get the microcode update this way. And repeatedly doing BIOS updates is risky.

https://portal.msrc.microsoft.com/en...sory/adv190013

 

KB4465065 Intel Microcode Updates for Windows 10 v1809 - Sept. 26 Win Update

now Microsoft has released the KB4494174 intel microcode update for v1809 - June 18 (make a note of this Brink) *Smile
https://www.catalog.update.microsoft...aspx?q=4494174

KB4494174: Intel microcode updates

MS did not want to release it back in mid-May and promised to release it a a "later date" which turned out to be 6/18

MS has not yet updated MS security advisory ADV190013 to mention the KB4494174 update which was recently released but may change it later

 

KB4346084 Intel Microcode Updates for Windows 10 v1803 - Sept. 27 Win Update

per MS security advisory ADV190013 about new microcode updates for 1803:

MS has recently released the KB4494451 Intel microcode update for v1803 this Tue. 6/18 (make a note of this Brink): *Smile
https://www.catalog.update.microsoft...aspx?q=4494451
KB4494451: Intel microcode updates

advisory ADV190013 will mention about KB4494451 at a later date