Microsoft.Graph.Authentication fails in Azure Automation Account due to a dependency on System.Runtime 8.0.0.0

[erobillard]

Describe the bug

The following 2 lines fail in an Azure Automation Account Runbook (7.2 runtime environment):
Connect-AzAccount -Identity
Connect-MgGraph -Identity

With the error:
Could not load file or assembly 'System.Runtime, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.

This was working with the following assemblies all on 2.25.0:
Microsoft.Graph
Microsoft.Graph.Authentication
Microsoft.Graph.Teams

Today the same lines fail with a tenant running these 3 DLLs on version 2.26.0

Expected behavior

The code should authenticate to Graph. All other Runbooks in this same Azure Automation Account succeed when authenticating with a client secret to retrieve a token, i.e.:

$response = Invoke-RestMethod -Method Post -Uri "https://login.microsoftonline.com/$tenantId/oauth2/v2.0/token" -ContentType "application/x-www-form-urlencoded" -Body $body

As soon as the Connect-MgGraph is required (in this case to add a member to a Shared channel in MS-Teams), authentication fails with the error as described.

How to reproduce

1. Create and configure an Azure Automation Account to authenticate as a managed identity. Configure as Powershell, 7.2 runtime environment.
2. Install these modules:
   Microsoft.Graph
   Microsoft.Graph.Authentication
   Microsoft.Graph.Teams
3. Confirm the installed version is 2.26.0
4. Create and execute a runbook with the lines:
   Connect-AzAccount -Identity
   Connect-MgGraph -Identity
5. Watch it fail.

SDK Version

2.26.0

Latest version known to work for scenario above?

2.25.0

Known Workarounds

None I can find.

Debug output

Click to expand log

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</details>


### Configuration

Azure Powershell 7.2 Runbook

### Other information

Someone compiled this with a dependency on System.Runtime 8.0 rather than the latest available to an Azure  Automation Account, and there's no way to force the version (i.e., set a -RequiredVersion parameter). 

[erobillard]

Related issue: #3147
In that case it appears that updating PowerShell resolved the issue, I don't believe this is an option with Azure Automation (7.2 it is).

[timayabi2020]

Hi @erobillard apologies for that experience. There is an existing issue here azureautomation/runbooks#112, requesting that team to provide an option for 7.4. Meanwhile, you can downgrade to v2.25.0 or use Azure functions.

[erobillard]

Thanks @timayabi2020, a downgrade to 2.25.0 did resolve the issue as a workaround.

[svrooij]

Azure Automation is capped at PowerShell 7.2 which is built upon dotnet 6 which is officially out of support since Nov 12th 2024 🤔

I cannot believe they still don't provide PowerShell 7.4 (dotnet8) for Azure Automation....

[alpixdotro]

Workaround:

1. Save-Module -Name Microsoft.Graph.Authentication -Path C:\temp\Modules -Repository PSGallery -MaximumVersion 2.25.0
2. ZIP it
3. Upload to Azure Automation, select runtime 7.2, and wait for import. It will overwrite 2.26.0 version and functionality will be restored.

[erobillard]

You can also download modules from https://www.powershellgallery.com/packages/Microsoft.Graph/2.25.0

Rename the nupkg file to, for example Microsoft.Graph.zip, or remember to change the name as you upload it to Modules in the Azure Automation Account. Version 2.25.0 worked for me, you shouldn't need to go any earlier.

I also find things to be more stable when version numbers match within a namespace like Microsoft.Graph.*

[alexandair]

A workaround is to enable Runtime environment experience (in public preview) and create a custom Runtime environment.

1. Select Overview and then select Try Runtime environment experience.
2. Under Process Automation, you will get the Runtime Environments (Preview)
3. Create a new RE. Pick PowerShell 7.4 as runtime version and add needed Microsoft Graph PowerShell v2.26 modules as packages.
4. Assign newly created custom Runtime environment to your runbooks that stopped working after you updated to Microsoft Graph PowerShell 2.26.