Error : Hyper-V cannot installed. hypervisor already running

Error : Hyper-V cannot installed. hypervisor already running

When you try to install Hyper-V role on a VM, you may face the error message “Hyper-V cannot installed. hypervisor already running”.

To resolve this issue, you may need to run the below commands,

Try installing the Hyper-V feature using the below command,

 Enable-WindowsOptionalFeature –Online -FeatureName Microsoft-Hyper-V –All -NoRestart 

Next step is to install the RSAT-Hyper-V Tools. To install the Hyper-V RSAT tools, please execute the below command.

 Install-WindowsFeature RSAT-Hyper-V-Tools -IncludeAllSubFeature

If you wish to enable the clustering, then you need to install the RSAT-Clustering also.

 Install-WindowsFeature RSAT-Clustering -IncludeAllSubFeature

To install the MPIO in your server, please execute the below command,

 Install-WindowsFeature Multipath-IO

To know more about the MPIO, refer the link https://technet.microsoft.com/en-us/library/ee619734(v=ws.10).aspx

To know more about the MPIO usage, please refer the link, https://blogs.msdn.microsoft.com/san/2012/07/20/managing-mpio-with-windows-powershell-on-windows-server-2012/

Now we need to restart the server once. To restart the server, please execute the below command,

 Restart-Computer

After the server restart, please verify the Hyper-V installation. In the server manager, you will be able to see the Hyper-V installed. Open the Hyper-V manager to start your LAB setup.