Blog from Saravanan Arumugam

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The virtual machine could not be started because the hypervisor is not running

Hyper-V is a key feature that Windows Server 2008 R2 provides. It is provided as one of the server roles. The main component of Hyper-V is called Hypervisor. It’s the virtualization software between the hardware and the operating system to support multiple operating systems to run on the same host machine.



I got the following error after installing the Hyper-V role in the Windows Server 2008 R2.

Hper-V exception



Though the virtualization software is provided by the Windows Server, its not the end of story. The hardware has to support it. Virtualization requires a 64 bit processor that is equipped with the virtualization (Intel VT and AMD-V) technology. Intel has a huge list of processors supporting virtualization technology and so is AMD.

By default the virtualization technology is disabled. Installation of Hyper-V also requires enabling of the virtualization technology in the hardware.



In my case, I have a Intel Xeon processor which supports the virtualization technology (Intel VT). The next possible solution is to enable the hardware-assisted Virtualization.

In the server startup, I pressed F2 to enter the BIOS set up. The dell machine’s Bios version was 1.6.4.

Under the Processor Settings I found the Virtualization Technology. I found it was disabled. I enabled it and saved the Bios changes.

This solved the exception in the Hyper-V. The Hyper-V then was able to connect and install another operating system on my new virtual machine.



Virtualization with Hyper-V: FAQ

Hypervisor is not running error: How to fix


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