I have a problem with uploading programs to my arduino leonardo. After IDE compiles a program, it shows this kind of error:
avrdude: Version 6.3, compiled on Jan 17 2017 at 12:00:53
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"
Using Port : COM4
Using Programmer : avr109
Overriding Baud Rate : 57600
avrdude: ser_open(): can't set com-state for "\.\COM4"
avrdude done. Thank you.
Already tried to reinstall all of the drivers, choosing other USB cables didn't work, 0 solutions. Getting the same thing on other computers. Thanks in advance for any help.