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Hyper-V and "Event ID: 157 - Disk x has been surprise removed"

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After posting about Hyper-V and Event ID 58 the other week - I had a number of people ask me about Event ID 157.  They told me that each time they backed up a virtual machine they were seeing this event inside of the virtual machine as well.

At first, I could not figure out why they were seeing this - as I did not see it on my system.  Then I discovered why I was not seeing this - my systems are up-to-date!

We released an update to get rid of this event (KB2958027) - and this was then included in the November 2014 rollup (KB3000850). 

So if you are seeing this event log being filed:

  1. Install these updates!
  2. Or, know that you can safely ignore this message if it is happening when a virtual machine backup is happening.

Cheers,
Ben

Comments

  • Anonymous
    May 27, 2015
    Hi Ben, thank you for the info but I'd have a question. Where should we install this update? On the HV or the VM? Thank you.

  • Anonymous
    June 25, 2015
    I have KB3000850 installed but still getting this messages every backup. So frustrating :(

  • Anonymous
    July 07, 2015
    I still get this error as well, even with all patches applied.

  • Anonymous
    August 02, 2015
    I got the Error with this Patch installed

  • Anonymous
    August 10, 2015
    Hi Ben Are you still saying that we can still "safely ignore this message" ? And as Nicola asked: "Where should we install this update? On the HV or the VM?" because the warnings are showing in the VM and the VM is fully patched. Regards

  • Anonymous
    September 02, 2015
    Same here, error showing despite update rollup being installed. BTW: Description of kb2958570 does not mention removal of the event 157 but only correcting for Hypervisor crash with 0x000000D5.

  • Anonymous
    October 08, 2015
    Me too :( systems all up to date as well

  • Anonymous
    December 02, 2015
    Anything else on this? ALL our servers are up to date and we get them on all VMs when DPM runs???

  • Anonymous
    December 12, 2015
    Anything? We use DPM and I am sure that's when it is happening. We are up-to-date on all updates but still getting the event.

  • Anonymous
    January 27, 2016
    Updates already installed but do not see any difference, disk x has still been surprised removed

  • Anonymous
    January 28, 2016
    Same here...Server 2012 R2 Hyper-V Host with Server 2012 R2 VM running Exchange 2013 CU10. Get this error after every backup on the VM still despite both host and VM being fully updated.

    • Anonymous
      February 02, 2016
      Exactly the same here.

  • Anonymous
    February 03, 2016
    Just adding my "Me Too" here. I'm looking at this event in the logs of a hyper-v guest running 2012R2 and have confirmed via powershell "Get-Hotfix" that KB3000850 is installed.

  • Anonymous
    June 03, 2016
    Ben are you going to respond as we to are seeing these events on our VM's and we are fully patched?

    • Anonymous
      June 03, 2016
      Hi David,I cannot reproduce this event log any more - and do not know why people are seeing on their systems if they are properly updated. You could contact product support so that they can investigate further - but either way, the message is spurious and can be ignored.
      • Anonymous
        December 09, 2016
        I can also confirm that we are still getting these events, and we are fully patched.
        • Anonymous
          May 25, 2017
          I also get it and I've confirmed I have the patch as well.
          • Anonymous
            June 06, 2017
            Patch level is current but I still have them on 2012 R2 and 2016 with 2012 R2 and 2016 guests