[Python] Running Azure Functions with VS Code instanlty fails with ECONNREFUSED

Yesterday I could run and debug my Azure Function project with VS Code. Today, when I'm hitting F5 ("Start Debugging"), a pop-up instantly appears with

connect ECONNREFUSED 127.0.0.1:9091
​

I believe it's a network issue, since VS Code doesn't even open a terminal displaying "Executing task [...]".

But within VS Code I can browse the extension marketplace, run "pip install" within the terminal.

Here is my configuration:

launch.json


{
"version": "0.2.0",
"configurations": [
{
"name": "Python: Current file",
"type": "python",
"request": "launch",
"program": "${file}",
"console": "integratedTerminal"
},
{
"name": "Azure Functions",
"type": "python",
"request": "attach",
"port": 9091,
"preLaunchTask": "func: host start"
}
]
}

tasks.json


{
"version": "2.0.0",
"tasks": [
{
"type": "func",
"command": "host start",
"problemMatcher": "$func-python-watch",
"isBackground": true,
"dependsOn": "pipInstall",
"options": {
"cwd": "${config:azureFunctions.projectSubpath}"
}
},
{
"label": "pipInstall",
"type": "shell",
"command": "${configython.pythonPath} -m pip install -r requirements.txt",
"problemMatcher": [],
"options": {
"cwd": "${config:azureFunctions.projectSubpath}"
}
}

]
}

settings.json


{
"azureFunctions.deploySubpath": "azure-functions\\my_project",
"azureFunctions.projectSubpath": "azure-functions\\my_project",
"azureFunctions.scmDoBuildDuringDeployment": true,
"azureFunctions.pythonVenv": ".venv",
"azureFunctions.projectLanguage": "Python",
"azureFunctions.projectRuntime": "~3",

"debug.internalConsoleOptions": "neverOpen",
"python.pythonPath": "C:\\Users\\myself\\BigRepo\\azure-functions\\my_project\\.venv\\Scripts\\python.exe",
"powershell.codeFormatting.addWhitespaceAroundPipe": true
//"terminal.integrated.shell.windows": "&&"
}

Continue reading...