Image state undeployable packer Azure windows 2012r2

[vinod devops]

I am working on packer Azure windows 2012 build. build got the timed out after long time . its showing image state undeployable. 

I am using this script for sysprep process, please help me with this.

 "echo '>>> Waiting for GA to start ...'",

        "while ((Get-Service RdAgent).Status -ne 'Running') { Start-Sleep -s 5 }",

        "while ((Get-Service WindowsAzureTelemetryService).Status -ne 'Running') { Start-Sleep -s 5 }",

        "while ((Get-Service WindowsAzureGuestAgent).Status -ne 'Running') { Start-Sleep -s 5 }",

        "if( Test-Path $Env:SystemRoot\\windows\\system32\\Sysprep\\unattend.xml ){ rm $Env:SystemRoot\\windows\\system32\\Sysprep\\unattend.xml -Force}",

        "& $env:SystemRoot\\System32\\Sysprep\\Sysprep.exe /oobe /generalize /quiet /quit /mode:vm",

        "while($true) { $imageState = Get-ItemProperty HKLM:\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Setup\\State | Select ImageState; Write-Output $imageState.ImageState; if($imageState.ImageState -ne 'IMAGE_STATE_GENERALIZE_RESEAL_TO_OOBE') { Start-Sleep -s 10 } else { break } }",