This article is intended to provide more information about a specific issue that can be identified by running a Best Practices Analyzer scan for Hyper-V. It also can be used without running a scan, as general troubleshooting and best practice information to help you configure your server appropriately. If you have troubleshooting steps or information that would improve this article, please add it. For instructions on how to edit a TechNet Wiki article, see Wiki: How to Use the Editor.

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

Operating System

Windows Server 2012





Note: The following sections provide details about the specific issue. Italics indicates UI text that appears in the Best Practices Analyzer tool for the specific issue.


The Windows Filtering Platform (WFP) virtual switch extension is disabled.


Some third party virtual switch extensions may not operate correctly on the following virtual switches: <list of virtual machines>


Use the Windows PowerShell cmdlet, Enable-VMSwitchExtension, to enable the Windows Filtering Platform if it is required by third party extensions.

Additional references