IDX12729: Unable to decode the header '[PII of type 'System.String' is hidden. For more details, see https://aka.ms/IdentityModel/PII.]' as Base64Url encoded string.

[KarinaxRivera]

Description of the issue

When running Export-M365DSCConfiguration using a certificate thumbprint, I get the following error message:

IDX12729: Unable to decode the header '[PII of type 'System.String' is hidden. For more details, see https://aka.ms/IdentityModel/PII.]' as Base64Url encoded string.
At C:\Program Files\WindowsPowerShell\Modules\ExchangeOnlineManagement\3.5.0\netFramework\ExchangeOnlineManagement.psm1:762 char:21

•                 throw $_.Exception.InnerException;
  

•                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

  • CategoryInfo : OperationStopped: (:) [], ArgumentException
  • FullyQualifiedErrorId : IDX12729: Unable to decode the header '[PII of type 'System.String' is hidden. For more details, see https://aka.ms/IdentityModel/PII.]'
    as Base64Url encoded string.

Any insight to this error would be helpful as I have not found anything relevant to fixing the issue.

Microsoft 365 DSC Version

1.24.529.1

Which workloads are affected

Exchange Online

The DSC configuration

No response

Verbose logs showing the problem

No response

Environment Information + PowerShell Version

No response

[ricmestre]

That's a problem between Graph and EXO 3.5.0 module. Please update M365DSC to today's release which rolled back EXO to 3.4.0 and solves this issue.

[KarinaxRivera]

This solved it, thanks so much!

[reikor0x]

Same problem here again. Updated module and dependencies, not solved.