Reading Time: 2 minutes VMware vSphere 5.x According with KB 2006859 (Windows 8 / Windows Server 2012 Operating System does not boot or install on ESXi or ESX) Windows 8 and Windows Server 2012 VMs are fully supported for ESXi 5.1, ESXi 5.1 U1, ESXi 5.0 U1 and ESXi 5.0 U2. Note: For Windows Server 2012, you must install the patch ESXi500-201209001(Patch 04) on ESXi 5.0 U1. For more information, see VMware ESXi 5.0, Patch Release ESXi500-201209001 (2032584).