![Arduino UNO not working; Arduino: avrdude: ser_open(): can't open device "\\.\COM4": The system cannot find the file specified. . I haI have also changed the COM Port in windows like the YT Arduino UNO not working; Arduino: avrdude: ser_open(): can't open device "\\.\COM4": The system cannot find the file specified. . I haI have also changed the COM Port in windows like the YT](https://preview.redd.it/arduino-uno-not-working-arduino-avrdude-ser-open-cant-open-v0-jbkolknzb2j91.png?width=493&format=png&auto=webp&s=2e57fe14711ae79b123b0df8c8654f3473935fa0)
Arduino UNO not working; Arduino: avrdude: ser_open(): can't open device "\\.\COM4": The system cannot find the file specified. . I haI have also changed the COM Port in windows like the YT
![Arduino-er: Arduino IDE error - avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied Arduino-er: Arduino IDE error - avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied](http://img.youtube.com/vi/Sdou3Uib9Hw/0.jpg)
Arduino-er: Arduino IDE error - avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied
![Arduno on linux上传失败: avrdude: ser_open(): can't open device “/dev/ttyUSB0“: Permission denied_Kearney form An idea的博客-CSDN博客 Arduno on linux上传失败: avrdude: ser_open(): can't open device “/dev/ttyUSB0“: Permission denied_Kearney form An idea的博客-CSDN博客](https://img-blog.csdnimg.cn/20201208153456926.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzAzMTA5Mg==,size_16,color_FFFFFF,t_70)
Arduno on linux上传失败: avrdude: ser_open(): can't open device “/dev/ttyUSB0“: Permission denied_Kearney form An idea的博客-CSDN博客
![vydržať Arthur Conan Doyle tyran avrdude ser_open can't open device com3 usb 2.0 Choďte preč odpustiť špinavý vydržať Arthur Conan Doyle tyran avrdude ser_open can't open device com3 usb 2.0 Choďte preč odpustiť špinavý](https://aws1.discourse-cdn.com/arduino/original/4X/b/5/f/b5f38516d0e5fdae0eed5bb6bddf95b0b3db32c7.jpeg)
vydržať Arthur Conan Doyle tyran avrdude ser_open can't open device com3 usb 2.0 Choďte preč odpustiť špinavý
![dobročinnosť tehotná vyjednávať avrdude ser_open can t open device com3 predpojatosť obsiahly námorná míľa dobročinnosť tehotná vyjednávať avrdude ser_open can t open device com3 predpojatosť obsiahly námorná míľa](https://mblogthumb-phinf.pstatic.net/20160522_206/chandong83_1463926715069IDJr6_PNG/%C1%A6%B8%F1_%BE%F8%C0%BD12png.png?type=w420)
dobročinnosť tehotná vyjednávať avrdude ser_open can t open device com3 predpojatosť obsiahly námorná míľa
![Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it. Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it.](https://gyorgybalassy.files.wordpress.com/2020/10/arduino-serial-port-in-device-manager.png)
Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it.
![dobročinnosť tehotná vyjednávať avrdude ser_open can t open device com3 predpojatosť obsiahly námorná míľa dobročinnosť tehotná vyjednávať avrdude ser_open can t open device com3 predpojatosť obsiahly námorná míľa](https://sp-ao.shortpixel.ai/client/to_auto,q_lossy,ret_img,w_649,h_365/http://www.btechiot.com/wp-content/uploads/2018/10/arduino-error--649x365.png)
dobročinnosť tehotná vyjednávať avrdude ser_open can t open device com3 predpojatosť obsiahly námorná míľa
![Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow](https://i.stack.imgur.com/PCjNG.png)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
![Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow](https://i.stack.imgur.com/cx8c7.png)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
Bug) avrdude: ser_open(): can't open device "\\.\COM1": The system cannot find the file specified. · Issue #5371 · arduino/Arduino · GitHub
![Arduino error (Ubuntu) - avrdude: ser_open(): can't open device "COM1": No such file or directory - YouTube Arduino error (Ubuntu) - avrdude: ser_open(): can't open device "COM1": No such file or directory - YouTube](https://i.ytimg.com/vi/oQLzCdDhkgo/hqdefault.jpg)
Arduino error (Ubuntu) - avrdude: ser_open(): can't open device "COM1": No such file or directory - YouTube
![arduino mega IDE on VirtualBox vm – avrdude: ser_open(): can't open device “/dev/ttyACM0”: Permission denied | dwaves.de arduino mega IDE on VirtualBox vm – avrdude: ser_open(): can't open device “/dev/ttyACM0”: Permission denied | dwaves.de](https://dwaves.de/wp-content/uploads/2019/11/Arduino-IDE-cant-open-device-dev-ttyACM0-Permission-denied.png)
arduino mega IDE on VirtualBox vm – avrdude: ser_open(): can't open device “/dev/ttyACM0”: Permission denied | dwaves.de
![dobročinnosť tehotná vyjednávať avrdude ser_open can t open device com3 predpojatosť obsiahly námorná míľa dobročinnosť tehotná vyjednávať avrdude ser_open can t open device com3 predpojatosť obsiahly námorná míľa](https://sp-ao.shortpixel.ai/client/to_auto,q_lossy,ret_img,w_649,h_365/http://www.btechiot.com/wp-content/uploads/2018/10/arduino-error-solution-for-ser_open-cant-open-device-COM1--649x365.png)
dobročinnosť tehotná vyjednávať avrdude ser_open can t open device com3 predpojatosť obsiahly námorná míľa
![Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow](https://i.stack.imgur.com/BZxOl.png)