COM ports missing

Development Tools IDE 1.x
1

Hi, Thanks for your help in advance!! my situation is that my COM ports are greyed-out. Device manager is not showing any ports in the list.

2

Hi there,

These are the few categories of causes I can think of:
Faulty USB port / cable
Have you tried changing ports / USB cables?

Faulty voltage regulator/dead chip/faulty USB connector on board
Do any LEDs light up when plugging the board into the computer?

Required drivers not installed
What serial to USB converter are you using?
Have you checked with the manufacturer/supplier of the chip to see if you need to install any drivers?

More details, images and links to what board you have would best help us determine the cause of the error.

Cheers!

3

Hi, a USB shouldn't matter because it is from the IDE, whether or not us a cable and/or board is connected. Probably should also say that I'm using a UNO. Thanks for the input!

4

As it is the case many times, when I started the IDE this AM, it is a different story. Now when I check the port listing inside the IDE, it shows that there is a COM3 available, the Device Manager confirms that, BUT, the bottom right corner of the IDE shows COM6. I've listed the error message too. I hope someone can help, I'd really appreciate it! I'm having problems with the LaunchPad IDE too.

error message:
<
Arduino: 1.8.13 (Windows 7), Board: "Arduino Uno"

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\User\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\User\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\User\Documents\Arduino\libraries -fqbn=arduino:avr:uno -ide-version=10813 -build-path C:\Users\User\AppData\Local\Temp\arduino_build_385767 -warnings=none -build-cache C:\Users\User\AppData\Local\Temp\arduino_cache_423342 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino17.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-arduino7.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Program Files (x86)\Arduino\examples\01.Basics\Blink\Blink.ino

C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\User\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\User\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\User\Documents\Arduino\libraries -fqbn=arduino:avr:uno -ide-version=10813 -build-path C:\Users\User\AppData\Local\Temp\arduino_build_385767 -warnings=none -build-cache C:\Users\User\AppData\Local\Temp\arduino_cache_423342 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude-6.3.0-arduino17.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc-7.3.0-atmel3.6.1-arduino7.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA-1.3.0.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Program Files (x86)\Arduino\examples\01.Basics\Blink\Blink.ino

Using board 'uno' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr

Using core 'arduino' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr

Detecting libraries used...

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\sketch\Blink.ino.cpp" -o nul -DARDUINO_LIB_DISCOVERY_PHASE

Generating function prototypes...

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\sketch\Blink.ino.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\preproc\ctags_target_for_gcc_minus_e.cpp" -DARDUINO_LIB_DISCOVERY_PHASE

"C:\Program Files (x86)\Arduino\tools-builder\ctags\5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "C:\Users\User\AppData\Local\Temp\arduino_build_385767\preproc\ctags_target_for_gcc_minus_e.cpp"

Compiling sketch...

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\sketch\Blink.ino.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\sketch\Blink.ino.cpp.o"

Compiling libraries...

Compiling core...

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc" -c -g -x assembler-with-cpp -flto -MMD -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\wiring_pulse.S" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_pulse.S.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\WInterrupts.c" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\WInterrupts.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\hooks.c" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\hooks.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\wiring.c" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\wiring_analog.c" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_analog.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\wiring_digital.c" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_digital.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\wiring_pulse.c" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_pulse.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc" -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\wiring_shift.c" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_shift.c.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\CDC.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\CDC.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\HardwareSerial.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\HardwareSerial0.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial0.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\HardwareSerial1.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial1.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\HardwareSerial2.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial2.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\HardwareSerial3.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial3.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\IPAddress.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\IPAddress.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\PluggableUSB.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\PluggableUSB.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\Print.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\Print.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\Stream.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\Stream.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\Tone.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\Tone.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\USBCore.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\USBCore.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\WMath.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\WMath.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\WString.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\WString.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\abi.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\abi.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\main.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\main.cpp.o"

"C:\Program Files (x86)\Arduino\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=10813 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino\new.cpp" -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\new.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_pulse.S.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\WInterrupts.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\hooks.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_analog.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_digital.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_pulse.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\wiring_shift.c.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\CDC.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial0.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial1.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial2.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\HardwareSerial3.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\IPAddress.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\PluggableUSB.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\Print.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\Stream.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\Tone.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\USBCore.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\WMath.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\WString.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\abi.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\main.cpp.o"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc-ar" rcs "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\core.a" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\core\new.cpp.o"

Archiving built core (caching) in: C:\Users\User\AppData\Local\Temp\arduino_cache_423342\core\core_arduino_avr_uno_0c812875ac70eb4a9b385d8fb077f54c.a

Linking everything together...

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc" -w -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=atmega328p -o "C:\Users\User\AppData\Local\Temp\arduino_build_385767/Blink.ino.elf" "C:\Users\User\AppData\Local\Temp\arduino_build_385767\sketch\Blink.ino.cpp.o" "C:\Users\User\AppData\Local\Temp\arduino_build_385767/core\core.a" "-LC:\Users\User\AppData\Local\Temp\arduino_build_385767" -lm

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-objcopy" -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 "C:\Users\User\AppData\Local\Temp\arduino_build_385767/Blink.ino.elf" "C:\Users\User\AppData\Local\Temp\arduino_build_385767/Blink.ino.eep"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-objcopy" -O ihex -R .eeprom "C:\Users\User\AppData\Local\Temp\arduino_build_385767/Blink.ino.elf" "C:\Users\User\AppData\Local\Temp\arduino_build_385767/Blink.ino.hex"

"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-size" -A "C:\Users\User\AppData\Local\Temp\arduino_build_385767/Blink.ino.elf"

Sketch uses 924 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 -PCOM6 -b115200 -D -Uflash:w:C:\Users\User\AppData\Local\Temp\arduino_build_385767/Blink.ino.hex:i

avrdude: Version 6.3-20190619

     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                    : COM6

     Using Programmer        An error occurred while uploading the sketch

  : arduino

     Overriding Baud Rate          : 115200

avrdude: ser_open(): can't open device "\.\COM6": The system cannot find the file specified.

avrdude done. Thank you.
/>

5

If Windows device manager and the IDE say that it is COM3, select COM3 before doing the upload.

The indication at the bottom right in the IDE only indicates the last port that you ever selected and that will be the one that will be used.

6

The only option in the IDE>tools>port is COM3, but in the error message states it is trying to use COM6 ?

7

Did you select COM3 under tools -> port?

8

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