Hi Vipin, This is perhaps a bit off topic, but have you considered getting rid of remote desktop and instead deploying as a real cloud app with PowerServer 2021?  Remote desktop is a workaround... running as real cloud app won't have config issues and other remote desktop limitations. 

I don't know why I get no printer selected when call PrintSetup(). Let me give you the scenario where it fails when I don't see any printer highlighted in PrintSetup().

We have system configuration maintenance program where we set the printer by the PSR file (Each PSR file belongs to some process like part_invoice.psr file will belong to part sales order, workshop_invoice.psr for workshop invoice etc.

For few programs, we set the printer as default printer i.e <default> or <windefault>

For few programs we set the printer as <Selectable> means it will open printer select dialog box when give print command.

We store these configuration setting into config table.

Our programs have facility to print and archive the document (We have check box for those options). For archive, we have Amyuni PDF driver which print/save as file into PDF. Here are the steps we follow during Print and Archive.

String lb_printdlg = TRUE // Always display print dialog

1 Look into Configuration table and look what is the printer option

2  If <Selectable> Then 

           Set Dw_Obj.Modify("Datawindow.Printer=''");

            lb_printdlg = TRUE //Open dialog box.

   ElseIf <default> Then

          lb_printdlg = FALSE //Don't open dialog box.

   Else

        Call Windows Printer from Registry based on OS Type

             Case Windows

                      RegistryGet('HKEY_LOCAL_MACHINE\Config\0001\System\CurrentControlSet\Control\Print\Printers',                        'default', ls_winprinter)

                    Case WindowsNT

                        RegistryGet('HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows',                                  'Device', ls_winprinter)

           Call ls_currentPrinter = PrintGetPrinter()

           If ls_currentPrinter <> ls_winprinter //Windowsdefault printer is not same as PrintGetPrinter()

                   Dw_Obj.Object.DataWindow.Printer=''

                   PrintSetPrinter(ls_WinPrinter) //Set Windows Default Printer as printer.....

                   lb_printdlg = FALSE//Don't Open dialog box.

3. Dw_Obj.Print(True, lb_printdlg ) //lb_printdlg will determine whether to open the dialogbox or not.

4. PrintSetPrinter(ls_currentprinter) //Restore the printer changed in <WinDefault> condition...

For Archive

ls_printer = PrintGetPrinter() //Store current printer

PrintSetPrinter("Amyuni Printer")

Dw_Obj.saveAs(); // Overwrite SaveAs() and call Amyuni API.

PrintSetPrinter(ls_printer) //Restore printer...... Here we have issue as ls_printer is coming as blank when we don't see any printer highlighted in PrintSetup() dialog box.

Kindly advice.