![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)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
![avrdude: ser_open(): can't open device "\.COM3":... - Avrdude, stk500, Bootloader issues - Arduino Forum avrdude: ser_open(): can't open device "\.COM3":... - Avrdude, stk500, Bootloader issues - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/6/f/b/6fbed51fc131fba6eb7a8e4f6be6c0468d894b52.jpeg)
avrdude: ser_open(): can't open device "\.COM3":... - Avrdude, stk500, Bootloader issues - Arduino Forum
![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
![avr - ATMEL STUDIO: avrdude.exe: ser_open(): can't open device - Electrical Engineering Stack Exchange avr - ATMEL STUDIO: avrdude.exe: ser_open(): can't open device - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/aIhog.png)
avr - ATMEL STUDIO: avrdude.exe: ser_open(): can't open device - Electrical Engineering Stack Exchange
![avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the fi - Installation & Troubleshooting - Arduino Forum avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the fi - Installation & Troubleshooting - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/1/f/7/1f7f743d9dd13273ba55347d8b979babc1986421_2_690x371.png)
avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the fi - Installation & Troubleshooting - Arduino Forum
![Solved: Arduino - avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified. | Experts Exchange Solved: Arduino - avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified. | Experts Exchange](https://filedb.experts-exchange.com/incoming/2020/02_w07/1443216/new-1.png)
Solved: Arduino - avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified. | Experts Exchange
![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
![Solved: Arduino - avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified. | Experts Exchange Solved: Arduino - avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified. | Experts Exchange](https://filedb.experts-exchange.com/incoming/2020/02_w07/1443217/new-1.png)
Solved: Arduino - avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified. | Experts Exchange
![ESP32 & could not open port 'COM5': PermissionError(13, 'Access is denied.', None, 5) - espressif32 - PlatformIO Community ESP32 & could not open port 'COM5': PermissionError(13, 'Access is denied.', None, 5) - espressif32 - PlatformIO Community](https://community.platformio.org/uploads/default/original/2X/b/bd7659971b80c6b291c18cd8e7356c73ea50bb62.png)
ESP32 & could not open port 'COM5': PermissionError(13, 'Access is denied.', None, 5) - espressif32 - PlatformIO Community
![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 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
![avrdude: ser_open() : can't set com-state for "\\.\COM5" - Avrdude, stk500, Bootloader issues - Arduino Forum avrdude: ser_open() : can't set com-state for "\\.\COM5" - Avrdude, stk500, Bootloader issues - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/e/f/d/efdca1cfe9c1caad027f9e41611e92803171002b.jpeg)