![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-port-selection.png)
Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it.
![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
![18.04 - Uploading code to arduino gives me the error: "avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied" - Ask Ubuntu 18.04 - Uploading code to arduino gives me the error: "avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied" - Ask Ubuntu](https://i.stack.imgur.com/ifRmx.png)
18.04 - Uploading code to arduino gives me the error: "avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied" - Ask Ubuntu
![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 | Arduino-er](https://1.bp.blogspot.com/-3lEz8FlaFqo/YMDQtzQmeCI/AAAAAAAABQg/tDqEYuAVH7M2ed1VqQqya8hCHl-q30ongCLcBGAsYHQ/s320/Arduino%2BNano%2BRP2040%2BConnect_01.jpg)
Arduino IDE error - avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied | Arduino-er
![avrdude: ser_open(): can't open device "\\.\COM7": Access denied. - Installation & Troubleshooting - Arduino Forum avrdude: ser_open(): can't open device "\\.\COM7": Access denied. - Installation & Troubleshooting - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/e/8/0/e807ffa7e6105054c5150025a15a01ee1bee10bd_2_690x387.png)
avrdude: ser_open(): can't open device "\\.\COM7": Access denied. - Installation & Troubleshooting - Arduino Forum
![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/1kNPb.png)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
![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 | Arduino-er](https://i.ytimg.com/vi/Sdou3Uib9Hw/maxresdefault.jpg)
Arduino IDE error - avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied | Arduino-er
![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
![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 | Arduino-er](https://i.ytimg.com/vi/Sdou3Uib9Hw/mqdefault.jpg)
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 | Arduino-er Arduino IDE error - avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied | Arduino-er](https://img.youtube.com/vi/Sdou3Uib9Hw/0.jpg)
Arduino IDE error - avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied | Arduino-er
![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/0iUf6.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/PCjNG.png)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
![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-port-properties.png)
Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it.
![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)