PrintToPrinter is not working

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ASP.NET

C#5.0

PrintToPrinter is not working in 64 bit system its showing one error message. "Failed to Open connection" Same code is working 32 bit system.

public void print()
{
    SqlCommand cmd = new SqlCommand("select * from converstion where status='A'", SC);
    SqlDataAdapter da = new SqlDataAdapter();
    da.SelectCommand = cmd;
    DataTable datatable = new DataTable();
    da.Fill(datatable);
    ReportDocument crreport = new ReportDocument();
    crreport.Load(Server.MapPath("~/Conversion.rpt"));
    crreport.SetDataSource(datatable);
    crreport.PrintToPrinter(1, false, 0, 0);
}