Print pdf to printer from WCF WebService

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PDF

printing

WCFServices

Hello,

I've found that to print a pdf file:

Dim psInfo As New ProcessStartInfo()
psInfo.FileName = "C:\Program Files\Adobe\Reader 9.0\Reader\AcroRd32.exe"
psInfo.Arguments = [String].Format("/s /o /h /t {0} {0}", pdfFileName, pdfPrinterName)
psInfo.WindowStyle = ProcessWindowStyle.Hidden
psInfo.CreateNoWindow = True
psInfo.UseShellExecute = True
Dim process__1 As Process = Process.Start(psInfo)

This is working well in IIS Express but in the deployment machine it doesn't print and it doesn't give error. The printer is a network printer correctly installed.

Could be a permission issue or configuration that has to be dome in IIS, ApplicationPool or else? In this case, which configuration or permissions do I have to give?

Thanks for help.