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Ensure that all mandatory virtual switch extensions are available

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Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016

For more information about best practices and scans, see Run Best Practices Analyzer Scans and Manage Scan Results.

Property Details
Operating System Windows Server 2016
Product/Feature Hyper-V
Severity Warning
Category Configuration

In the following sections, italics indicates UI text that appears in the Best Practices Analyzer tool for this issue.

Issue

One or more virtual network adapters are connected to a virtual switch with mandatory extensions that are disabled or not installed.

Impact

Network traffic is blocked on one or more virtual network adapters on the following virtual machines:

<list of virtual machines>

Resolution

First, make sure that the mandatory extension has been installed on the host and install the extension if necessary. Then, if the mandatory extension is disabled, use Virtual Switch Manager or the Windows PowerShell cmdlet Enable-VMSwitchExtension to enable the extension.