Tales from the Datacenter

The subsystem needed…

So, I’m bee-bopping along setting up a new Server 2008 R2 virtual host, when I get to our SAN software’s install.  When I tried to run the executable, the following error was thrown:

The subsystem needed to support the image type is not present.

A quick Googling led me to this Technet post.  The relevate parts of the post:

WOW64 is not present in Microsoft Hyper-V Server 2008 R2.  This change was made because Microsoft Hyper-V Server is supposed to be a single purpose OS, and users have asked for it to be as small as possible.  So, whenever possible, we will not include general Windows components that are not needed by Hyper-V.

And the resolution:

Issue this command to install WOW64 support:

start /w ocsetup ServerCore-WOW64

And of course: reboot.