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,
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,