![GNU/Linux: Error message 'error opening serial port', 'avrdude: ser_open(): can`t open device <port>', 'permission denied' - GNU/Linux: Error message 'error opening serial port', 'avrdude: ser_open(): can`t open device <port>', 'permission denied' -](https://duinocoin.de/img/tipps_tricks/Error_Serial_Port-full.png)
GNU/Linux: Error message 'error opening serial port', 'avrdude: ser_open(): can`t open device <port>', 'permission denied' -
![Hey my arduino uno keeps saying ser_open(): can't open device "\\.\COM5": access denied. Any idea why am I doing somthing wrong : r/arduino Hey my arduino uno keeps saying ser_open(): can't open device "\\.\COM5": access denied. Any idea why am I doing somthing wrong : r/arduino](https://i.redd.it/hey-my-arduino-uno-keeps-saying-ser-open-cant-open-device-v0-orchx000ndfa1.jpg?width=3000&format=pjpg&auto=webp&s=795c5c6ceb18ebef49df01c303ac9580d5cfdc72)
Hey my arduino uno keeps saying ser_open(): can't open device "\\.\COM5": access denied. Any idea why am I doing somthing wrong : r/arduino
![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
![Arduino Nano: avrdude: ser_open(): can't open device "\\.\COM5": Access is denied - Avrdude, stk500, Bootloader issues - Arduino Forum Arduino Nano: avrdude: ser_open(): can't open device "\\.\COM5": Access is denied - Avrdude, stk500, Bootloader issues - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/f/2/5/f2595d723466710783a04801bf00dc31ea41b53a.png)
Arduino Nano: avrdude: ser_open(): can't open device "\\.\COM5": Access is denied - Avrdude, stk500, Bootloader issues - Arduino Forum
![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)