Today, I need to upgrade my standalone ESXi Host as I wanted to trial Windows Server 2012. I created a virtual machine using the Guest Operating System ‘Microsoft Windows Server 2008 R2 64 bit’ with the following hardware settings:
When Windows Server 2012 began to install, it would display the following error:
After some research, I established that the following Host Update needed to be installed.
To do this, I downloaded the update and then uploaded it into the root of a Datastore called ‘Data’
I then logged onto my ESXi Host via SSH and issued the following command:
Remember that any files/folders are case sensitive, this always gets me!
Windows Server 2012 RC is now installing.
Windows Sever 2012 RC is now installed and ready to be configured.
VMFocus 
Many thanks this got me out of a hole!
Nice article
Thank you very much is was very useful for me, even in 2018 😉