asp.net - C# Excel ActivePrinter Exception 0x800A03EC -


i cannot change active printer specific printer in excel asp.net web-service. service running under localsystem account. if call function shows list of printers:

system.drawing.printing.printersettings.installedprinters

i list of installed in system printers:

"microsoft print pdf"

"microsoft xps document writer"

"hp universal printing pcl 6"

but if call function

excelapplication.activeprinter

it returns -

unknown printer

when try set printer c# setting printer:

excelapplication.activeprinter = "microsoft xps document writer"

or (i found port in register hive hkey_current_user\software\microsoft\windows nt\currentversion\devices)

excelapplication.activeprinter = "microsoft xps document writer on ne00:"

it doesn't matter, exception 0x800a03ec.

finally, tried change default printer in system:

 [dllimport("winspool.drv",               charset = charset.auto,               setlasterror = true)]         [return: marshalas(unmanagedtype.bool)]         public static extern boolean setdefaultprinter(string name);

it works fine, default printer in system has changed. in excel still "unknown printer"

also if open excel under account, in print settings can see default printer


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