![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.
![Cannot select serial port, open serial port (VSCode, Arduino, Apple M1) · Issue #1232 · microsoft/vscode-arduino · GitHub Cannot select serial port, open serial port (VSCode, Arduino, Apple M1) · Issue #1232 · microsoft/vscode-arduino · GitHub](https://user-images.githubusercontent.com/8652224/114764476-a5e1ce80-9d6c-11eb-8a3e-cb943a63beda.gif)
Cannot select serial port, open serial port (VSCode, Arduino, Apple M1) · Issue #1232 · microsoft/vscode-arduino · GitHub
![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 ide - Why is the IDE not able to find the board despite it being clearly seen and selected? - Arduino Stack Exchange arduino ide - Why is the IDE not able to find the board despite it being clearly seen and selected? - Arduino Stack Exchange](https://i.stack.imgur.com/T0jFH.png)