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Hyper-V VSS writer missing RRS feed

  • Question

  • Hello,
    I'm using Backup Exec 20.1 to perform daily backups of virtual machines, but quite offten the backup end up failing due to error: 

    V-79-57344-37935 - Snapshot Technology: Initialization failure on: "VRTSRV::\\backup.blade.local\Hyper-V?Virtual?Machine\DC_b". Snapshot technology used: Microsoft Volume Shadow Copy Service (VSS).
    
    Snapshot technology error (0xE000942F): Cannot capture a snapshot of the virtual machine volumes. Ensure that the Hyper-V Virtual Machine Management Service is running and the status of the Microsoft Hyper-V VSS writer is Stable.
    
    Check the Windows Event Viewer for details.

    When i look for the writer in the "vssadmin list writer" output, the writer is not present there. If I restart Virtual machine management service and run vssadmin again, the writer appears.

    Sometimes many backups can complete without the writer dissapearing, but then the writer dissapears again. I can't find any error on warning in Windows Event Viewer.

    I'm running Windows server 2016 and the VM's are running on the same server as the Backup Exec is installed on.

    So is there any sollution to this problem or a way to find out what is happening to the writer ?

    Thanks

    Martin

    Friday, October 19, 2018 11:15 AM

Answers

  • "I'm using Backup Exec 20.1 to perform daily backups"

    Have you asked your question of the Backup Exec people?  Sounds like you are having an issue with their product.


    tim

    Friday, October 19, 2018 2:20 PM

All replies

  • "I'm using Backup Exec 20.1 to perform daily backups"

    Have you asked your question of the Backup Exec people?  Sounds like you are having an issue with their product.


    tim

    Friday, October 19, 2018 2:20 PM
  • Hi,

    How about windows backup feature? Did it work?

    Best Regards,

    Frank


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Monday, October 22, 2018 6:04 AM
  • Hi,
    Just checking in to see if the information provided was helpful. Please let us know if you would like further assistance.

    Best Regards,

    Frank

    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Friday, October 26, 2018 2:52 AM
  • Hello error (0xE000942F) actual , give examples of bug fixes?
    Tuesday, October 30, 2018 10:34 AM
  • Hello,

    yes I've contacted Backup Exec support.

    They told me to contact MS since i'm having trouble with part of Hyper-V.

    Tuesday, November 20, 2018 10:37 AM
  • "They told me to contact MS since i'm having trouble with part of Hyper-V."

    Did they actually investigate your issue, or did they simply say it was Microsoft's problem?

    Did you follow Frank's suggestion to try Windows Server backup when you receive the failure from Backup Exec?  If WSB works, it would pretty much be pointing at an issue with Backup Exec, as both are dependent on VSS.


    tim

    Tuesday, November 20, 2018 2:11 PM
  • No, they didn't investigate anything.

    I'll try to use Windows Server backup, but the problem with that is that it doesn't happen every time so I'll have to run multiple backups and I still won't be sure that the problem is indeed BE.

    Tuesday, November 20, 2018 4:03 PM
  • I have the same issue, did you ever found the root cause and/or a solution?
    Tuesday, May 7, 2019 2:55 PM