InstallDate - Property in wmi

List of namespaces with InstallDate property

NameSpace	n of Classes
ROOT\CIMV2	227
ROOT\CIMV2\ms_409	223
ROOT\CIMV2\power	9
ROOT\CIMV2\power\ms_409	9
ROOT\CIMV2\storage\iscsitarget	59
ROOT\CIMV2\TerminalServices	43
ROOT\Hardware	18
ROOT\Hardware\ms_409	18
ROOT\InventoryLogging	2
ROOT\Microsoft\IPAM	17
ROOT\Microsoft\IPAM\MS_409	17
ROOT\Microsoft\Windows\HardwareManagement	4
ROOT\Microsoft\Windows\HardwareManagement\MS_409	4
ROOT\MicrosoftDNS	37
ROOT\MicrosoftIISv2	67
ROOT\MicrosoftIISv2\MS_409	17
ROOT\MicrosoftNLB	10
ROOT\MicrosoftNLB\ms_409	10
ROOT\MSCluster	26
ROOT\MSCluster\ms_409	23
ROOT\StandardCimv2	68
ROOT\StandardCimv2\MS_409	61
ROOT\virtualization\v2	127