[Warning] Failed to generate IntelliSense configuration.

[deepcoder]

What do I need to do to correct this on MacOS 10.4.6 with :

Version: 1.56.0-insider
Commit: ce791d27dc9889a392f4d29abefe9c53eb0b5129
Date: 2021-04-16T11:23:31.851Z
Electron: 11.4.2
Chrome: 87.0.4280.141
Node.js: 12.18.3
V8: 8.7.220.31-electron.0
OS: Darwin x64 18.7.0

and 
Arduino 1.8.13

[calebho]

Having the same issue

Version: 1.55.2
Commit: 3c4e3df9e89829dce27b7b5c24508306b151f30d
Date: 2021-04-13T09:36:32.643Z
Electron: 11.3.0
Chrome: 87.0.4280.141
Node.js: 12.18.3
V8: 8.7.220.31-electron.0
OS: Darwin x64 20.3.0

Extension configuration:

    "arduino.path": "/usr/local/bin/arduino-cli",
    "arduino.defaultBaudRate": 9600,
    "arduino.useArduinoCli": true

arduino-cli version:

arduino-cli alpha Version: 0.18.1 Commit: b3cf8e19b801b2855ccd2a18c69c673315839231 Date:

Logs:

[Starting] Analyzing sketch '03-love-o-meter/03-love-o-meter.ino'
[Warning] Output path is not specified. Unable to reuse previously compiled files. Build will be slower. See README.
[Warning] Failed to generate IntelliSense configuration.
[Error] Analyzing sketch '03-love-o-meter/03-love-o-meter.ino': {"error":{"errno":"ENOENT","code":"ENOENT","syscall":"spawn /usr/local/bin/arduino-cli/Contents/MacOS/Arduino","path":"/usr/local/bin/arduino-cli/Contents/MacOS/Arduino","spawnargs":["compile","-b","arduino:avr:uno","--verbose","/Users/calebho/work/arduino/starter-kit/03-love-o-meter/03-love-o-meter.ino"]}}

Seems like the issue is "syscall":"spawn /usr/local/bin/arduino-cli/Contents/MacOS/Arduino"

[colivier]

I also have the same issue

VSCode :

Version : 1.55.2 (user setup) Commit : 3c4e3df9e89829dce27b7b5c24508306b151f30d Date : 2021-04-13T09:35:57.887Z Electron : 11.3.0 Chrome : 87.0.4280.141 Node.js : 12.18.3 V8 : 8.7.220.31-electron.0 OS : Windows_NT x64 10.0.19041

[adiazulay]

If your c_cpp_properties.json file was created using v0.3.x you may have to delete it and let v0.4.x recreate it.
If you want to keep your c_cpp_properties.json from v0.3.x you can display IntelliSense auto-generation in the extension settings.

[colivier]

Thanks @adiazulay for the reply

For my part, on a new project the Arduino project's .vscode subdirectory does not contain the c_cpp_properties.json file, there is just the arduino.json file. On my previous projects the file was created and everything was ok. The issue is just for the new projects

[nk-dm]

I noticed that (for me) the last message before the warning ended with a "operation not permitted", so I went into Settings > Security & Privacy > Privacy > Full Disc Access and ticked the checkbox next to VSCode. Worked for me.

[mahyar1284]

I have the same problem

[enwi]

I don't know if this is the case for you, but I had this issue whenever the .ino file was not named exactly after the folder it was in.
So for example if your .ino file is called test.ino make sure it is inside a folder called test.

[mahyar1284]

I don't know if this is the case for you, but I had this issue whenever the .ino file was not named exacctly after the folder it was in. So for example if your .ino file is called test.ino make sure it is inside a folder called test.

it partially fixed the issue (❁´◡`❁). now most of the time it generates the intellisence configuration!!!

[maxandriani]

Hello guys! I have the same issue w/ win10. I also set the debug level to "vervose" but I didn't get any aditional info about the error.

settings.json

{
    "arduino.path": "C:\\arduino-cli\\bin",
    "arduino.useArduinoCli": true,
    "arduino.enableUSBDetection": true,
    "arduino.logLevel": "verbose"
}

arduino.json

{
    "port": "COM3",
    "board": "arduino:avr:uno",
    "sketch": "arduino-blink-app.ino"
}

files:
C:\user\shhh\projects\arduino-blink-app\*
arduino-blink-app.ino
.vscode\*

Name: Arduino
Id: vsciot-vscode.vscode-arduino
Description: Arduino for Visual Studio Code
Version: 0.4.12
Publisher: Microsoft
VS Marketplace Link: https://marketplace.visualstudio.com/items?itemName=vsciot-vscode.vscode-arduino
---
Version: 1.67.0 (system setup)
Commit: 57fd6d0195bb9b9d1b49f6da5db789060795de47
Date: 2022-05-04T12:06:02.889Z
Electron: 17.4.1
Chromium: 98.0.4758.141
Node.js: 16.13.0
V8: 9.8.177.13-electron.0
OS: Windows_NT x64 10.0.19042
---
arduino-cli.exe Version: 0.13.0 Commit: 693a045

[Youssefbenhammouda]

@maxandriani
Same here I have just installed vs code and the extensions and I have this issue, and I can't get more info about the problem, it just prints "[Warning] Failed to generate IntelliSense configuration.".
Any fix ?

[Youssefbenhammouda]

I solved the issue by installing Arduino ide and using it instead of Arduino-cli and it worked perfectly.

[maxandriani]

@maxandriani Same here I have just installed vs code and the extensions and I have this issue, and I can't get more info about the problem, it just prints "[Warning] Failed to generate IntelliSense configuration.". Any fix ?

I didn't.
I gived-up and installed arduino IDE. 🤣

[Pixel48]

Arduino sketches are folders, and main sketch file is defined by having the same name as containing folder - just change your main .ino filename to match project folder or vice-versa and you're good to go