Problem:
Exception error ‘Operation is not supported’ returned when import Centrify DC / DA PS modules.
 

PS C:\Users\pckelly> Import-Module CentrifyDirectControl 
Import-Module : Could not load file or assembly 'file:///C:\Windows\system32\WindowsPowerShell\v1.0\Modules\CentrifyDirectControl\Centrify.Cfw.Core.dll' or one of its 
dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515) 
At line:1 char:1 
+ Import-Module CentrifyDirectControl 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
+ CategoryInfo : InvalidOperation: (:) [Import-Module], FileLoadException 
+ FullyQualifiedErrorId : FormatXmlUpdateException,Microsoft.PowerShell.Commands.ImportModuleCommand

 

Cause:
'Operation is not supported' indicates the module couldn't be loaded because of some security policies. That is most likely the .dll files under C:\Windows\system32\WindowsPowerShell\v1.0\Modules\CentrifyDirectControl\ are copied from untrusted site defined by the machine. Then the .dll files are blocked on the local machine.
 
 
Resolution:

To check if the dlls are blocked:

• Navigate to the .dll folder

e.g. C:\Windows\system32\WindowsPowerShell\v1.0\Modules\CentrifyDirectControl\

• Right click on the target .dll file

e.g. Centrify.Cfw.Core.dll

• Open Properties and General tab, if this .dll is blocked then there will be a note at the bottom about the block status.

 
Unblock the blocked .dll file will make the PS Import-Module work again.