An error occurred while uploading the sketch.

pnkz:
avrdude: ser_open(): can't open device "\.\COM1": The system cannot find the file specified.

Select the port of your Arduino from the Tools > Port menu. If that menu is grayed out or the port of your Arduino board is not shown then one of the following may be the cause:

  • You may need to install the driver for the USB-serial chip on your Arduino. Determine which chip is used on your Arduino and install the driver.
  • You may be using a charge-only or defective USB cable. Test your cable on another device to confirm that it works for data.

Please help. I am getting this error when uploading my sketch on Uno.

Arduino: 1.8.5 (Windows Store 1.8.10.0) (Windows 10), Board: "Arduino/Genuino Uno"

Sketch uses 928 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't set com-state for "\.\COM3"
An error occurred while uploading the sketch

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Arduino: 1.8.5 (Windows 10), Board: "Arduino/Genuino Uno"

Sketch uses 938 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't open device "\.\COM4": 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.

// this is my error

@mike12345

Are you using USB 2.0 or 3.0 ports and cables as Arduinos can be very hit and miss with USB 3.0 ?

Changing cables and ports is always a first stop in troubleshooting.

Arduino: 1.8.6 (Windows 10), Board: "Arduino/Genuino Uno"

Sketch uses 930 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x44
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.

need help

Arduino: 1.8.6 (Windows 10), Board: "Arduino/Genuino Uno"

Sketch uses 930 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x44
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x44
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.

Google is your friend

Arduino: 1.8.5 (Windows 10), Board: "Arduino/Genuino Uno"

Archiving built core (caching) in: C:\Users\Ivan\AppData\Local\Temp\arduino_cache_304496\core\core_arduino_avr_uno_0c812875ac70eb4a9b385d8fb077f54c.a
Sketch uses 960 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -PCOM3 -b115200 -D -Uflash:w:C:\Users\Ivan\AppData\Local\Temp\arduino_build_521870/sketch_sep15c.ino.hex:i

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 : COM3
Using Programmer : arduino
Overriding Baud Rate : 115200
An error occurred while uploading the sketch
avrdude: ser_open(): can't set com-state for "\.\COM3"

avrdude done. Thank you.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

@DarkZero987

Is that a comment or a question ?

pert:
Please do this:

  • File > Preferences > Show verbose output during: > compilation (uncheck) > upload (check) > OK
  • Sketch > Upload
  • After the upload fails you'll see a button on the right side of the orange bar "Copy error messages". Click that button.
  • Paste the error messages in a reply here USING CODE TAGS (</> button on the toolbar).

it'll be great if i could get some help too

< Arduino: 1.8.7 (Mac OS X), Board: "Arduino/Genuino Uno"

Sketch uses 4300 bytes (13%) of program storage space. Maximum is 32256 bytes.
Global variables use 239 bytes (11%) of dynamic memory, leaving 1809 bytes for local variables. Maximum is 2048 bytes.
/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -carduino -P/dev/cu.usbmodem1421 -b115200 -D -Uflash:w:/var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch_dec15a.ino.hex:i

avrdude: Version 6.3-20171130
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch

System wide configuration file is "/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf"
User configuration file is "/Users/ifrahs/.avrduderc"
User configuration file does not exist or is not a regular file, skipping

Using Port : /dev/cu.usbmodem1421
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: ser_open(): can't open device "/dev/cu.usbmodem1421": No such file or directory

avrdude done. Thank you.

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.
/>

i'm using a DHT11 humidity sensor, my cable works as i have tried before i just have no idea why its giving me errors

i posted a query earlier with error message from " file>preferences>upload(checked)"

this is with 'compilation (checked)'

</>
Arduino: 1.8.7 (Mac OS X), Board: "Arduino/Genuino Uno"

/Applications/Arduino 2.app/Contents/Java/arduino-builder -dump-prefs -logger=machine -hardware /Applications/Arduino 2.app/Contents/Java/hardware -tools /Applications/Arduino 2.app/Contents/Java/tools-builder -tools /Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -built-in-libraries /Applications/Arduino 2.app/Contents/Java/libraries -libraries /Users/ifrahs/Documents/Arduino/libraries -fqbn=arduino:avr:uno -ide-version=10807 -build-path /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303 -warnings=none -build-cache /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_cache_725994 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avrdude.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avrdude-6.3.0-arduino14.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.arduinoOTA.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.arduinoOTA-1.2.1.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avr-gcc.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -verbose /Users/ifrahs/Documents/Arduino/sketch_dec15a/sketch_dec15a.ino
/Applications/Arduino 2.app/Contents/Java/arduino-builder -compile -logger=machine -hardware /Applications/Arduino 2.app/Contents/Java/hardware -tools /Applications/Arduino 2.app/Contents/Java/tools-builder -tools /Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -built-in-libraries /Applications/Arduino 2.app/Contents/Java/libraries -libraries /Users/ifrahs/Documents/Arduino/libraries -fqbn=arduino:avr:uno -ide-version=10807 -build-path /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303 -warnings=none -build-cache /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_cache_725994 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avrdude.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avrdude-6.3.0-arduino14.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.arduinoOTA.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.arduinoOTA-1.2.1.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avr-gcc.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -prefs=runtime.tools.avr-gcc-5.4.0-atmel3.6.1-arduino2.path=/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr -verbose /Users/ifrahs/Documents/Arduino/sketch_dec15a/sketch_dec15a.ino
Using board 'uno' from platform in folder: /Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr
Using core 'arduino' from platform in folder: /Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr
Detecting libraries used...
"/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10807 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr/cores/arduino" "-I/Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr/variants/standard" /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch/sketch_dec15a.ino.cpp -o /dev/null
"/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10807 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr/cores/arduino" "-I/Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr/variants/standard" -I/Users/ifrahs/Documents/Arduino/libraries/DHTLib /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch/sketch_dec15a.ino.cpp -o /dev/null
Using cached library dependencies for file: /Users/ifrahs/Documents/Arduino/libraries/DHTLib/dht.cpp
Generating function prototypes...
"/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10807 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr/cores/arduino" "-I/Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr/variants/standard" -I/Users/ifrahs/Documents/Arduino/libraries/DHTLib /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch/sketch_dec15a.ino.cpp -o /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/preproc/ctags_target_for_gcc_minus_e.cpp
"/Applications/Arduino 2.app/Contents/Java/tools-builder/ctags/5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/preproc/ctags_target_for_gcc_minus_e.cpp
Compiling sketch...
"/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -MMD -flto -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10807 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-I/Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr/cores/arduino" "-I/Applications/Arduino 2.app/Contents/Java/hardware/arduino/avr/variants/standard" -I/Users/ifrahs/Documents/Arduino/libraries/DHTLib /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch/sketch_dec15a.ino.cpp -o /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch/sketch_dec15a.ino.cpp.o
Compiling libraries...
Compiling library "DHTLib"
Using previously compiled file: /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/libraries/DHTLib/dht.cpp.o
Compiling core...
Using precompiled core: /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_cache_725994/core/core_arduino_avr_uno_a44201f00637cc7de5d2873b25582122.a
Linking everything together...
"/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avr-gcc" -w -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=atmega328p -o /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch_dec15a.ino.elf /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch/sketch_dec15a.ino.cpp.o /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/libraries/DHTLib/dht.cpp.o /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/../arduino_cache_725994/core/core_arduino_avr_uno_a44201f00637cc7de5d2873b25582122.a -L/var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303 -lm
"/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avr-objcopy" -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch_dec15a.ino.elf /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch_dec15a.ino.eep
"/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avr-objcopy" -O ihex -R .eeprom /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch_dec15a.ino.elf /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch_dec15a.ino.hex
Using library DHTLib in folder: /Users/ifrahs/Documents/Arduino/libraries/DHTLib (legacy)
"/Applications/Arduino 2.app/Contents/Java/hardware/tools/avr/bin/avr-size" -A /var/folders/4j/p2g4zhc94990rcsc7khsbyrh0000gn/T/arduino_build_479303/sketch_dec15a.ino.elf
Sketch uses 4300 bytes (13%) of program storage space. Maximum is 32256 bytes.
Global variables use 239 bytes (11%) of dynamic memory, leaving 1809 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't open device "/dev/cu.usbmodem1421": No such file or directory
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
</>

Arduino: 1.8.5 (Windows 7), Board: "Arduino/Genuino Uno"

Sketch uses 1998 bytes (6%) of program storage space. Maximum is 32256 bytes.
Global variables use 189 bytes (9%) of dynamic memory, leaving 1859 bytes for local variables. Maximum is 2048 bytes.
avrdude: stk500_recv(): programmer is not responding
An error occurred while uploading the sketch
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0xd8
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xd8
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0xd8
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0xd8
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0xd8
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xd8
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0xd8
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0xd8
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0xd8
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xd8

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

SEND HELP
i'm heckin lost please help

Arduino: 1.8.5 (Windows 10), Board: "Arduino/Genuino Uno"

Sketch uses 1806 bytes (5%) of program storage space. Maximum is 32256 bytes.
Global variables use 51 bytes (2%) of dynamic memory, leaving 1997 bytes for local variables. Maximum is 2048 bytes.
C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -PCOM4 -b115200 -D -Uflash:w:C:\Users\Isaac\AppData\Local\Temp\arduino_build_127520/Slots_test.ino.hex:i 

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              : arduino
         Overriding Baud Rate          : 115200
avrdude: ser_open(): can't open device "\\.\COM4": The system cannot find the file specified.



avrdude done.  Thank you.

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.

ThePyroManiac:
SEND HELP
i'm heckin lost please help

Arduino: 1.8.5 (Windows 10), Board: "Arduino/Genuino Uno"

Sketch uses 1806 bytes (5%) of program storage space. Maximum is 32256 bytes.
Global variables use 51 bytes (2%) of dynamic memory, leaving 1997 bytes for local variables. Maximum is 2048 bytes.
C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -PCOM4 -b115200 -D -Uflash:w:C:\Users\Isaac\AppData\Local\Temp\arduino_build_127520/Slots_test.ino.hex:i

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              : arduino
        Overriding Baud Rate          : 115200
avrdude: ser_open(): can't open device "\.\COM4": The system cannot find the file specified.

avrdude done.  Thank you.

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.

Incorrect port selected. Select a port from tools -> port menu; it's got COM4 selected (which presumably you used previously), but it's saying that there is no COM4. Windows will often assign a different port number depending on which USB port a device is plugged into (and occasionally for no apparent reason), so you just need to select the correct port.

Hi,

I had the same problem and i just went to Tools+Port, and then selected the one that showed Arduino Genuino/UNO, in my case (i switched from port 13 to port 20).
It worked.

Regrads,

Sketch uses 896 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x8f
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x8f
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x8f
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x8f
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x8f
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x8f
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x8f
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x8f
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x8f
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x8f
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

@kmspavan

Just posting the error message is useful but it would be better if you included any other info such as the board being used and any additional components you may have connected.

Might I suggest you read the posts at the top of the forum section too please.

Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Board: "Arduino/Genuino Uno"

Sketch uses 972 bytes (3%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
Sketch uses 972 bytes (3%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x6e
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x6e
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x6e
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x6e
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x6e
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x6e
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x6e
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x6e
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x6e
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x6e
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.

plz help I dont know what the problem is

RandomStuff:
plz help I dont know what the problem is

Remove any connections to pins 0 and 1. These pins are used for communication with your computer, including uploads. Connecting anything to these pins can interfere with uploads.

Make sure you have the correct board selected from the Tools > Board menu.

Make sure you have selected the port of your Arduino board from the Tools > Port menu.

Sometimes the port will be labeled with the board name in the menu. Other times it will not. If you don’t know which port is your Arduino, you can find it like this:

  • Unplug your Arduino board from the computer.
  • Tools > Port
  • Note the ports, if any, listed in the menu.
  • Close the Tools menu
  • Plug your Arduino board into the computer.
  • Tools > Port - The new port listed in the menu is your Arduino board.
2 Likes

I'm getting the same error while uploading the code to the board.
I'm new to this and I'm just trying to follow what instructables has put up.
the error message is :

Sketch uses 21624 bytes (67%) of program storage space. Maximum is 32256 bytes.
Global variables use 910 bytes (44%) of dynamic memory, leaving 1138 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't set com-state for "\.\COM4"

SO what does this mean?
What is the second method of uploading the code? How to do it?
How to resolve this?
Thanks in advance.