Arduino IDE 2.0 doesn't start if the CLI daemon port is used by another application

[jcamplifiers]

Describe the bug,
Arduino IDE don't start if Shure System API ShureDeviceApiService is running.

Desktop (please complete the following information):

• OS: Windows
• Version: 10 20H2

Additional context
If Shure Designer is installed on your system, port 50051 is used so the Arduino IDE 2.0 does not just start and stays in the about window.

2021-03-03 00:00:00 daemon INFO Restarting daemon in 4 seconds...
2021-03-03 00:00:01 daemon INFO Restarting daemon in 3 seconds...
2021-03-03 00:00:02 daemon INFO Restarting daemon in 2 seconds...
2021-03-03 00:00:03 daemon INFO Restarting daemon in 1 seconds...
2021-03-03 00:00:04 daemon INFO Restarting daemon now...
2021-03-03 00:00:04 daemon INFO Starting daemon from C:\Users\jose\AppData\Local\Programs\Arduino IDE\resources\app\node_modules\arduino-ide-extension\build\arduino-cli.exe...
2021-03-03 00:00:04 daemon INFO Using config file: c:\Users\jose.arduinoIDE\arduino-cli.yaml
2021-03-03 00:00:04 daemon INFO arduino-cli.exe version 0.16.1
2021-03-03 00:00:04 daemon INFO Setting up Prometheus metrics on :9090/metrics
2021-03-03 00:00:04 daemon INFO Starting daemon on TCP address 127.0.0.1:50051
2021-03-03 00:00:04 daemon INFO Failed to listen on TCP port: 50051. Unexpected error: listen tcp 127.0.0.1:50051: bind: Intento de acceso a un socket no permitido por sus permisos de acceso.
2021-03-03 00:00:04 daemon INFO Failed to start the daemon.
2021-03-03 00:00:04 daemon ERROR Error: Failed to listen on TCP port: 50051. Unexpected error: listen tcp 127.0.0.1:50051: bind: Intento de acceso a un socket no permitido por sus permisos de acceso.
at Socket. (C:\Users\jose\AppData\Local\Programs\Arduino IDE\resources\app\node_modules\arduino-ide-extension\lib\node\arduino-daemon-impl.js:307:58)
at Socket.emit (events.js:223:5)
at addChunk (_stream_readable.js:309:12)
at readableAddChunk (_stream_readable.js:290:11)
at Socket.Readable.push (_stream_readable.js:224:10)
at Pipe.onStreamRead (internal/stream_base_commons.js:181:23)

[kittaakos]

Thanks for reporting it, @jcamplifiers.

Intento de acceso a un socket no permitido por sus permisos de acceso.

I am not sure what the error message means, but you can adjust the port in the CLI config. The CLI config is under C:\Users\your_user_name\.arduinoIDE\arduino-cli-config.yaml on Windows. Stop the app, open this file with your favorite text editor, and change the default 50051 port to something else. Let us know how it worked. Thanks!

[jcamplifiers]

Works! Thanks!