Power Platform configuration, such as DLP policies, cannot be exported via delegated authentication

[KuotingChiu]

Description of the issue

For Power Platform delegated authentication, it does not seem any Graph PowerShell permissions are needed. But exporting any Power Platform configuration resulted in error.

The ID I am using definitely has the permission that I can run Get-DlpPolicy and able to get results.

Microsoft 365 DSC Version

1.25.212.2

Which workloads are affected

Power Platform

The DSC configuration

$Components = @("PPAdminDLPPolicy")
Export-M365DSCConfiguration -Path $path -FileName $Filename -Credential $Credential -Components $Components

Exporting Microsoft 365 configuration for Components: PPAdminDLPPolicy

Authentication methods specified:
- Credentials

[1/1] Extracting [PPAdminDLPPolicy] using {Credentials}...❌
Error Log created at {file://C:/Users/GC89140/12580-M365DSC-ErrorLog.log}
⌛ Export took {20 seconds} for {0 instances}


Message in the ErrorLog

[2025/02/17 05:09:23]
{NotSpecified}
System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.PowerShell.Commands.WebRequestPSCmdlet.PrepareSession()
   at Microsoft.PowerShell.Commands.WebRequestPSCmdlet.ProcessRecord()
   at System.Management.Automation.CommandProcessor.ProcessRecord()
"Error during Export:"
at Invoke-M365DSCPowerPlatformRESTWebRequest, C:\Program Files\WindowsPowerShell\Modules\Microsoft365DSC\1.25.212.2\Modules\WorkloadHelpers\M365DSCPowerPlatformRESTHelper.psm1: line 31
at Export-TargetResource, C:\Program Files\WindowsPowerShell\Modules\Microsoft365DSC\1.25.212.2\DSCResources\MSFT_PPAdminDLPPolicy\MSFT_PPAdminDLPPolicy.psm1: line 435
at Start-M365DSCConfigurationExtract, C:\Program Files\WindowsPowerShell\Modules\Microsoft365DSC\1.25.212.2\Modules\M365DSCReverse.psm1: line 689
at Export-M365DSCConfiguration, C:\Program Files\WindowsPowerShell\Modules\Microsoft365DSC\1.25.212.2\Modules\M365DSCUtil.psm1: line 1512
at <ScriptBlock>, <No file>: line 1
User ID masked
TenantId: masked

Verbose logs showing the problem

[2025/02/17 05:09:23]
{NotSpecified}
System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.PowerShell.Commands.WebRequestPSCmdlet.PrepareSession()
   at Microsoft.PowerShell.Commands.WebRequestPSCmdlet.ProcessRecord()
   at System.Management.Automation.CommandProcessor.ProcessRecord()
"Error during Export:"
at Invoke-M365DSCPowerPlatformRESTWebRequest, C:\Program Files\WindowsPowerShell\Modules\Microsoft365DSC\1.25.212.2\Modules\WorkloadHelpers\M365DSCPowerPlatformRESTHelper.psm1: line 31
at Export-TargetResource, C:\Program Files\WindowsPowerShell\Modules\Microsoft365DSC\1.25.212.2\DSCResources\MSFT_PPAdminDLPPolicy\MSFT_PPAdminDLPPolicy.psm1: line 435
at Start-M365DSCConfigurationExtract, C:\Program Files\WindowsPowerShell\Modules\Microsoft365DSC\1.25.212.2\Modules\M365DSCReverse.psm1: line 689
at Export-M365DSCConfiguration, C:\Program Files\WindowsPowerShell\Modules\Microsoft365DSC\1.25.212.2\Modules\M365DSCUtil.psm1: line 1512
at <ScriptBlock>, <No file>: line 1
qgc89140s@higtest.com
TenantId: higtest.com

Environment Information + PowerShell Version

Name                           Value
----                           -----
PSVersion                      5.1.22621.4391
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.22621.4391
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1