Export-M365DSCConfiguration with Service Principal/Secret authentication method not determined

[essjaywilson]

Details of the scenario you tried and the problem that is occurring

Before updating the module to the latest version, I could successfully export selected config using, for example:

Export-M365DSCConfiguration -Components @("AADNamedLocationPolicy") -ApplicationId $ApplicationId -TenantId $TenantId -ApplicationSecret $ApplicationSecret

Now, when I run the exact same cmdlet, the code returns 2 things:

1. Authentication methods specified: - Service Principal with Application Secret
2. Could not determine authentication method

I can run the same cmdlet using -Credential $credential but this was not required before.

Verbose logs showing the problem

A failed run goes as follows:

_PS C:\WINDOWS\system32> Export-M365DSCConfiguration -Components @("SPOHomeSite") -ApplicationId $ApplicationId -TenantId $TenantId -ApplicationSecret $ApplicationSecret

Exporting Microsoft 365 configuration for Components: SPOHomeSite

Authentication methods specified:

• Service Principal with Application Secret

Could not determine authentication method
Partial Export file was saved at: C:\Users\xxxxxx\AppData\Local\Temp\3a5a5c01-c7b8-4da9-a07a-4ec2ff35029e.partial.ps1_

A successful run goes as follows:

_PS C:\WINDOWS\system32> Export-M365DSCConfiguration -Components @("AADNamedLocationPolicy") -Credential $credential

Exporting Microsoft 365 configuration for Components: AADNamedLocationPolicy

Authentication methods specified:

• Credentials

Connecting to {MicrosoftGraph}...✅
[1/1] Extracting [AADNamedLocationPolicy] using {Credentials}...
|---[1/5] Rxxxxxx✅
|---[2/5] Sxxxxx]✅
|---[3/5] [Mxxxxxx✅
|---[4/5] [Mxxxxxxxxxxxxx✅
|---[5/5] Test✅
⌛ Export took {26 seconds}

Destination Path:_

Suggested solution to the issue

N/A

The DSC configuration that is used to reproduce the issue (as detailed as possible)

The operating system the target node is running

OsName : Microsoft Windows 10 Enterprise
OsOperatingSystemSKU : EnterpriseEdition
OsArchitecture : 64-bit
WindowsVersion : 2009
WindowsBuildLabEx : 19041.1.amd64fre.vb_release.191206-1406
OsLanguage : en-GB
OsMuiLanguages : {en-GB, en-US}

Version of the DSC module that was used ('dev' if using current dev branch)

1.22.1005.1

[andikrueger]

Duplicate of #2379 and #2374. Fix will be released with today's version of M365DSC'.

[andikrueger]

Linking release PR #2395