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Virtual machine network adapter not connected

Daniel Foo 0 Reputation points
2023-01-12T04:38:22.2+00:00

We have had a VM running fine all this while. The network adapter showed not connect 2 days ago and until now not been able to connect at all.

VM is running Windows Server 2008 R2 SP1 sit in Hyper V 2019.

No changes had been made to Hyper V or VM OS.

Tried the legacy network adapter and also have the same issue.

Hope someone can help with this issue.

Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
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  1. Marian Leica 536 Reputation points Microsoft Employee
    2023-01-12T09:28:49.0833333+00:00

    Hi! You'll need to investigate the Hyper-V Host for possible reasons as the cause can vary. Please have a look at the event logs in Event Viewer on your Hyper-V host for clues for the NIC status change and plausible reason at the timestamp when your issue started. Look at the System Event Logs and the Hyper-V logs (Hyper-V-Worker, Hyper-V-VMMS, Hyper-V-VmSwitch).

    And of course please note that Windows Server 2008 R2 has been out of support for many years, and it would be best for your guest workloads if you upgrade the OS version.

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