azure-pipelines-tasks: [REGRESSION]: AzureFileCopy@6 no longer works with "Workload identity federation" service connection

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• I searched for existing GitHub issues
• I read pipeline troubleshooting guide
• I checked how to collect logs

Task name

AzureFileCopy

Breaking task version

6.238.1

Last working task version

6.237.5

Regression Description

Using a WIF Service connection from Azure DevOps to Azure Storage account in Azure.

When the task runs the copy command then earlier I would see:

Uploading files from source path: ‘D:\a\1\a\xxx.zip’ to storage account: ‘storage_xyz’ in container: ‘container_xyz’ with blob prefix: ‘’ & azcopy copy “D:\a\1\a\xxx.zip” “https://storage_xyz.blob.core.windows.net/container_xyz/” --log-level=INFO --recursive INFO: Scanning… INFO: Login with Powershell context succeeded INFO: Authenticating to destination using Azure AD

however from yesterday when the new task was live in our tenant then:

Uploading files from source path: ‘D:\a\1\a\xxx.zip’ to storage account: ‘storage_xyz’ in container: ‘container_xyz’ with blob prefix: ‘’ & “AzCopy\AzCopy.exe” copy “D:\a\1\a\xxx.zip” “https://storage_xyz.blob.core.windows.net/container_xyz/” --log-level=INFO --recursive INFO: Scanning… To sign in, use a web browser to open the page https://microsoft.com/devicelogin and enter the code xxxxxxx to authenticate.

Then the task just blocks and fails after 1-2 minutes

Work-a-round, I have now removed the AzureFileCopy task and replaced it with a AzureCLI@2 task using the same service connection and calling:

az storage blob upload --account-name $Env:StorageAccountName -c $Env:ContainerName -f $Env:File --overwrite true --auth-mode login --only-show-errors

which is working, so I believe it is not the service connection.

Environment type (Please select at least one enviroment where you face this issue)

• Self-Hosted
• Microsoft Hosted
• VMSS Pool
• Container

Azure DevOps Server type

dev.azure.com (formerly visualstudio.com)

Azure DevOps Server Version (if applicable)

No response

Operation system

windows-2022

Relevant log output

Uploading files from source path: 'D:\a\1\a\xxx.zip' to storage account: 'storage_xyz' in container: 'container_xyz' with blob prefix: ''
 & "AzCopy\AzCopy.exe" copy "D:\a\1\a\xxx.zip" "https://storage_xyz.blob.core.windows.net/container_xyz/"  --log-level=INFO --recursive
INFO: Scanning...
To sign in, use a web browser to open the page https://microsoft.com/devicelogin and enter the code xxxxxxx to authenticate.

Full task logs with system.debug enabled

 [REPLACE THIS WITH YOUR INFORMATION] 

 [REPLACE THIS WITH YOUR INFORMATION] 

Repro steps

trigger: none

pool:
  vmImage: windows-2022

steps:
- task: ArchiveFiles@2
  displayName: "Zip Doc"
  inputs:
    rootFolderOrFile: $(Agent.BuildDirectory)/s/doc
    includeRootFolder: false
    archiveType: 'zip'
    archiveFile: '$(Build.ArtifactStagingDirectory)/doc.zip'
    replaceExistingArchive: true

- task: AzureFileCopy@6
  displayName: "Upload Doc to Blob"
  inputs:
    SourcePath: '$(Build.ArtifactStagingDirectory)/doc.zip'
    azureSubscription: 'Az Subscription'
    Destination: 'AzureBlob'
    storage: 'storage_xyz'
    ContainerName: 'container_xyz'
    BlobPrefix: 'test'