I receive this error code when uploading to a Duemilanove.
Various other com ports tried with no success.
My Mega board will accept same sketch with no errors.
Arduino: 1.6.13 (Windows 10), Board: “Arduino Duemilanove or Diecimila, ATmega328”
Build options changed, rebuilding all
Sketch uses 928 bytes (3%) of program storage space. Maximum is 30,720 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes for local variables. Maximum is 2,048 bytes.
avrdude: ser_open(): can’t open device “\.\COM11”: The system cannot find the file specified.
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
This report would have more information with
“Show verbose output during compilation”
option enabled in File → Preferences.