Vmware esxi cpu microcode update available

From the error it looks like cores 1 through 7 returned a different value for a register than that for core 0. I don't know why core 0 would have a different reading from cores 1 though 7. After rolling back to ESXi 7. I think you can check microcode level from ESXi command line or from a vmware. Yes, current microcode version is 0x12d for all cores. But there is a difference between cpu0 and cpu Number of microcode updates Original Revision:0x Original Revision:0xd. I have opened a ticket at Supermicro too.

They would look at the Microcode, but maybe it is a problem of the ESXi query but nobody from VMware explain something about this message I tried taking the latest BIOS from Supermicro on a test machine in the lab, but the microcode still differs between core 0 and Every C series machine I've checked also has this microcode behavior, so I'm guessing that its going to get acknowledged as a bug. Update ESXi The Supermicro systems we are running i. Supermicro doesn't seem to see this as an issue and won't be releasing a firmware update to fix it.

This isn't just a microcode check, it tests the uniformity of all CPUs and I don't see a way to disable that. You might get lucky downgrading the BIOS to a version that doesn't update the CPU microcode since ucode is always layered on power on, you can't "write" on silicon.

If that fails, run the latest version that works and newer ones as nested instances I didn't think I would have another update around this issue, but I stumbled on something related to this issue.

I have been running the 7. It is only when I try and move to 7. Download the fling's zip file and extract the files contained within the zip. Download these 2 files and place them in the same directory as where the files from 1 were placed:. Obtain a microcode file for Intel processors and place the "microcode. This download is for a "tgz" file i. You will need to extract the "microcode. If you have an AMD processor and do not want to obtain an Intel firmware file then you can also create an empty "microcode.

Run e. The install will attempt to report if it was successful. The system's "Event Viewer" can be used to determine whether the fling was able to find an updated firmware for the processor and apply an update. The "Event Viewer" can be started by running the command "eventvwr" from the Start Menu.

The middle pane will display the most recent system events, and there should be an event from source "cpumcupdate" that will report if an update was attempted or successful. The fling has performed an update if the event reports "Successfully updated microcode on one or more CPUs". The firmware update must be applied each time the processor is turned on, so the driver must remain installed in order to keep the processor updated. The event "No CPUs needed an update" typically means that the fling is not providing a benefit and can be uninstalled.

However, there is an exception. For example, if you install the fling, uninstall it, and then install the fling again then the first run can report "Successfully updated microcode This is because the second run does not know the processor was already updated by the first run.

Is this OK or should i change something? Regards, Steffen. Hi Steffen, that's perfect. It means you have installed the latest version, and installing any of the older versions would result in a downgrade. Well, that is interesting! I suggest that you follow the instructions in my post to update the microcode of your host machine's CPUs.

Try to update the BIOS to the latest available version first. Hi Tim, Thanks for sharing and linking back to my post, much appreciated! I didn't find a way to comment there, so I hope you read my answer here and are able to fix that.

Hi everyone.. Question to the experts.. I have a 5. I am wondering if the latest microcode update is applied within the 5.

Hi Anonymous, if the nested host is complaining about not being able to update the microcode then updating it on the physical host should help. Use the cpu5-microcode package for ESXi 5. Thanks for your assistance. Strange that these microcode packages don't get included as you apply standard patches to our hosts. I will read through the walkthrough above again, but is it as simple as installing a VIB package that is provided directly from VMware?

Regards, Adam Tyler. Just went and tried this but got the following error. Any idea what I am doing wrong? I apologize for all the posts. I managed to apply the offline bundle with the esxcli command and was able to start my nested ESXi 6. Thanks for your help and the great blog post.! In my case, when I received this issue I was able to resolve the problem by changing the number of processors on the VM that I was getting this error on.

I had an older server we were using for testing environments for various reasons.