Sometimes you get an error message “Unable to obtain hardware information” or “Unable to determine Guest Operating System” when using VMware Converter 4.01. This happens at least with VMware Converter 4.01 and converting x64 VM’s like “Windows 7” and “Windows Server 2008 R2” from ESXi 4 U1. Others found out, I have not tried those yet. A the,: Similar problem here – Windows 7 VM, converter gives the “Unable to obtain hardware information for the selected machine” Log shows (I’m assuming this is the important part) error ‘ManagedMachineDataConnectionLogger’] Cannot query source HW info: vmodl.fault.SystemError Export Wizard through VI Client gives ‘Unable to determine Guest Operating System’ Changing the VM’s settings and making the Operating System something other than Win 7 seems to work.