Hyper-V: Display adapters should be enabled in virtual machines to provide video capabilities

Applies To: Windows Server 2008 R2, Windows Server 2012

This topic is intended to address a specific issue identified by a Best Practices Analyzer scan. You should apply the information in this topic only to computers that have had the Hyper-V Best Practices Analyzer run against them and are experiencing the issue addressed by this topic. For more information about best practices and scans, see Best Practices Analyzer.

Operating System

Windows Server 2012 or Windows Server 2008 R2








The Microsoft Virtual Machine Bus Video Device may be disabled in a virtual machine.

Microsoft Virtual Machine Bus Video Device is a virtual video adapter for Hyper-V that is optimized for use with virtual machines run by Hyper-V. When a virtual machine is not configured to use the Microsoft Virtual Machine Bus Video Device, a legacy video adapter is used to provide video capabilities. Microsoft Virtual Machine Bus Video Device provides better video performance than a legacy video adapter.


Video performance for the following virtual machines will be degraded: <list of virtual machine names>


Use Device Manager in the guest operating system to enable the Microsoft Virtual Machine Bus Video Device.

The steps required to perform this procedure may vary depending on the operating system. For instructions on how to use Device Manager to enable a device, see Help in the guest operating system.