Serial port 'COM19' already in use

Forum 2005-2010 (read only) Software Troubleshooting
25

Check your port activity with

If you have bluetooth you can try replacing the RXTX Serial Communication Library used by Arduino IDE with my patched one:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1237179908/0

Good luck