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Question

Could not establish connection host [.], results may be incomplete

  • July 15, 2026
  • 2 replies
  • 18 views
U
Novice
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Hi,

I keep seeing an irritating warning during Hyper V backup. One host in the Hyper V setup has been de-configured and the SW uninstalled, and the node has been removed from the list in the Hyper V Instance. Also, it does not show up in the preview for the vmgroups. Even so, the warning (Could not establish connection host [.], results may be incomplete) appears immediately when the backup runs. How can I get rid of this host? Please assist.

    2 replies

    P
    Vaulter
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    • PradeepVaulter
    • Vaulter
    • July 16, 2026

    Hi ​@Uni ,

    The mentioned error typically appears when a decommissioned or offline host is still referenced in your Commvault configuration, especially in Hyper-V or VMware environments.

    • Check Access Nodes:

      • Go to the Hyper-V instance properties.
      • Review the list of access nodes.
      • Remove any decommissioned or offline nodes from the list.
      • Add only active, online nodes.
    • In the CommCell Console, review all sub clients (VM groups) associated with the affected vCenter or virtualization client.
    • Remove any references to the decommissioned host from sub client content, discovery rules, or filters.
    • Right-click the Virtual Server instance and select "All Tasks" > "Refresh Datacenter" to force Commvault to re-sync with vCenter
    U
    Novice
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    • UniNovice
    • Author
    • Novice
    • July 16, 2026

    Hi Pradeep

    I have tried all the steps you have mentioned but I still get the warning.

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