Pipeline input to executable with PowerShell with Error � character is added to the command when executing the AzurePipeline powershell Task

I am trying to run the below line in the Azure pipeline Powershell script.

- task: PowerShell@2
  displayName: 'Run test sequence'
  inputs:
    targetType: 'inline'
    script: |
            Write-Host "Running test sequence..."      
       
            $AppConfig = "$(System.DefaultWorkingDirectory)\myapplicationfile.xml"
            $RunMcsProduct = "$(System.DefaultWorkingDirectory)\myapplicationFolder"
            $SimulatedQuickDeviceConfig = "$(System.DefaultWorkingDirectory)\myDevicefile.xml"

            # Run Product exe with arguments
            $exeArguments = $AppConfig , $SimulatedQuickDeviceConfig
            Set-Location -Path $RunMcsProduct
            $appCmd = ".\myapplication.exe"
            
            "init-instrument" | & $appCmd $exeArguments           

            Write-Host "Complete."

And when the pipeline runs I get the following error. (Sorry I cannot show the entire log due to some sensitive information in the log.

However, the same script I can execute successfully on my local computer.

The solution from here helped me. link

There are two solutions mentioned in the above link. The one that worked for me is below.

        # Create txt tempFileand add commands to it
        new-item -path $tempFile.txt  -type file
        "command1" | add-content -path $tempFile
        "command2" | add-content -path $tempFile 


        Start-Process -Wait -NoNewWindow -RedirectStandardInput $tempFile -FilePath findstr.exe -ArgumentList hi 

        # Cleanup temp file
        $tempFile | Remove-Item