WindowsOptionalFeature: Get Method fails if OptionalFeature has no custom properties when called by the LCM.

[jambar42]

When the WindowsOptionalFeature DSC resource Get method is invoked by the LCM, an error is thrown if the Optional Feature has no custom properties.

Optional Feature with Custom Properties:
PS C:\Windows\system32> Invoke-DscResource -Name "WindowsOptionalFeature" -Method Get -ModuleName "PSDSCResources" -Property @{Name = "SystemDataArchiver"; Ensure = 'Present'}

ConfigurationName :
DependsOn :
ModuleName : PSDSCResources
ModuleVersion : 2.9.0.0
PsDscRunAsCredential :
ResourceId :
SourceInfo :
CustomProperties : {Name = Description, Value = Provides services to collect and archive Windows Server system
data., Path = ServerComponent, Name = DisplayName, Value = System Data Archiver, Path =
ServerComponent, Name = Id, Value = 1043, Path = ServerComponent, Name = Type, Value = Feature,
Path = ServerComponent...}
Description : Provides services to collect and archive Windows Server system data.
DisplayName : System Data Archiver
Ensure : Present
LogLevel : WarningsInfo
LogPath : C:\Windows\Logs\DISM\dism.log
Name : SystemDataArchiver
NoWindowsUpdateCheck :
RemoveFilesOnDisable :
PSComputerName : localhost

Optional Feature without Custom Properties:
PS C:\Windows\system32> Invoke-DscResource -Name "WindowsOptionalFeature" -Method Get -ModuleName "PSDSCResources" -Property @{Name = "HypervisorPlatform"; Ensure = 'Present'}
A general error occurred that is not covered by a more specific error code.
+ CategoryInfo : NotSpecified: (root/Microsoft/...gurationManager:String) [], CimException
+ FullyQualifiedErrorId : MI RESULT 1
+ PSComputerName : localhost

Windows\Desired State Configuration Event Error 4250 thrown:
Job {FCA666F0-D06E-11EA-AD33-248A07A40AF1} :
Message Specified cast is not valid.
HResult -2147467262
StackTrack at Microsoft.PowerShell.DesiredStateConfiguration.Internal.DownloadManagerBase.ConvertCimInstanceToHashTable(CimInstance cimInstance, Boolean bWrap)
at Microsoft.PowerShell.DesiredStateConfiguration.Internal.DownloadManagerBase.ConvertCimInstanceToHashTable(CimInstance cimInstance, Boolean bWrap)
at Microsoft.PowerShell.DesiredStateConfiguration.Internal.DownloadManagerBase.ConvertCimInstanceToHashTable(CimInstance cimInstance, Boolean bWrap)
at Microsoft.PowerShell.DesiredStateConfiguration.Internal.DownloadManagerBase.GetJsonStringArrayStatusValue(Object value, IntPtr& statusInstanceHandle, UInt32& getActionStatusCode)
at Microsoft.PowerShell.DesiredStateConfiguration.Internal.DownloadManagerBase.AddSendStatusParametersFromStatusInformation(PowerShell powershell, IntPtr statusInformationPtr, UInt32 reportType, IntPtr& errorInstanceHandle, UInt32& getActionStatusCode)
at Microsoft.PowerShell.DesiredStateConfiguration.Internal.DownloadManagerBase.SendStatusReport(IntPtr metaConfigHandle, IntPtr& errorInstanceHandle, IntPtr statusInformation, UInt32 reportType, UInt32& getActionStatusCode)