Windows Server 2016 Directory Services ForestMode Enumeration - 'Unknown'

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namespace:   system.directoryservices.activedirectory
os - windows server 2016 rtm
role - directory services
issue category - .net framework forestmode enumeration
.net version - .net framework 4.6.2
issue- when trying enumerate "forestmode" of 'xyz.com' forest stand-alone member server (windows server 2016 rtm non-domain joined server) using below commands, output comes out 'unknown'. however, when run (get-adforest).forestmode on root domain controller itself, output comes out 'windows2016forest'. why discrepancy? solution, if there one? when can except correct value returned via .net way?

$forestcontext = new-object system.directoryservices.activedirectory.directorycontext('forest','xyz.com','user@xyz.com','password')
$forestinfo = [system.directoryservices.activedirectory]::getforest($forestcontext)
$forest.forestmode

"unknown"

hi,
not quite sure problem suffering is.
based on understanding of forestmode enumeration, if run forestmode enumeration on non-domain server, there no forest running, output unknown seems reasonable me. please see: https://msdn.microsoft.com/en-us/library/system.directoryservices.activedirectory.forestmode%28v=vs.110%29.aspx?f=255&mspperror=-2147217396
in addition, suggest have try posting questions in .net framework forum:
https://social.msdn.microsoft.com/forums/vstudio/en-us/home?category=netdevelopment
reason why recommend posting appropriately qualified pool of respondents, , other partners read forums regularly can either share knowledge or learn interaction us. thank understanding.
best regards,
wendy

please remember mark replies answers if help.
if have feedback technet subscriber support, contact tnmff@microsoft.com. 



Windows Server  >  Directory Services



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