IDE hangs on startup: "dial tcp: lookup downloads.arduino.cc: getaddrinfow"

Continuing the discussion from Arduino 2.0.3 stuck on loading screen:

PS C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE> & ".\Arduino IDE"
PS C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE>
                                                        & ".\Arduino IDE"
PS C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE>
Arduino IDE 2.3.2
Checking for frontend application configuration customizations. Module path: C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\electron-main.js, destination 'package.json': C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\package.json
Setting 'theia.frontend.config.appVersion' application configuration value to: "2.3.2" (type of string)
Setting 'theia.frontend.config.cliVersion' application configuration value to: "0.35.3" (type of string)
Setting 'theia.frontend.config.buildDate' application configuration value to: "2024-02-20T10:04:35.814Z" (type of string)
Frontend application configuration after modifications: {"applicationName":"Arduino IDE","defaultTheme":{"light":"arduino-theme","dark":"arduino-theme-dark"},"defaultIconTheme":"none","electron":{"windowOptions":{}},"defaultLocale":"","validatePreferencesSchema":false,"preferences":{"window.title":"${rootName}${activeEditorShort}${appName}","files.autoSave":"afterDelay","editor.minimap.enabled":false,"editor.tabSize":2,"editor.scrollBeyondLastLine":false,"editor.quickSuggestions":{"other":false,"comments":false,"strings":false},"editor.maxTokenizationLineLength":500,"editor.bracketPairColorization.enabled":false,"breadcrumbs.enabled":false,"workbench.tree.renderIndentGuides":"none","explorer.compactFolders":false},"appVersion":"2.3.2","cliVersion":"0.35.3","buildDate":"2024-02-20T10:04:35.814Z"}
Starting backend process. PID: 18152
Using browser-only version of superagent in non-browser environment
Configuration directory URI: 'file:///c%3A/Users/AUDJ9BZ/.arduinoIDE'
Configuring to accept webviews on '^.+\.webview\..+$' hostname.
2024-05-16T13:15:44.934Z root INFO Backend Object.initialize: 3.4 ms [Finished 0.459 s after backend start]
2024-05-16T13:15:44.936Z root INFO Backend Object.configure: 2.8 ms [Finished 0.459 s after backend start]
2024-05-16T13:15:44.936Z root INFO Backend s.onStart: 1.4 ms [Finished 0.459 s after backend start]
2024-05-16T13:15:44.936Z root INFO Backend s.configure: 0.3 ms [Finished 0.480 s after backend start]
2024-05-16T13:15:44.937Z root INFO Backend d.onStart: 0.2 ms [Finished 0.480 s after backend start]
2024-05-16T13:15:44.938Z root INFO Backend d.configure: 0.1 ms [Finished 0.480 s after backend start]
2024-05-16T13:15:44.938Z root INFO Backend d.initialize: 20.7 ms [Finished 0.480 s after backend start]
2024-05-16T13:15:44.939Z root INFO Backend c.onStart: 0.2 ms [Finished 0.480 s after backend start]
2024-05-16T13:15:44.939Z root INFO Backend a.configure: 1.8 ms [Finished 0.482 s after backend start]
2024-05-16T13:15:44.941Z config INFO >>> Initializing CLI configuration...
2024-05-16T13:15:44.941Z root INFO Backend c.initialize: 0.5 ms [Finished 0.482 s after backend start]
2024-05-16T13:15:44.941Z root INFO Backend R.onStart: 0.6 ms [Finished 0.483 s after backend start]
2024-05-16T13:15:44.941Z config INFO Loading CLI configuration from c:\Users\AUDJ9BZ\.arduinoIDE\arduino-cli.yaml...
2024-05-16T13:15:44.942Z daemon INFO Starting daemon from C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\resources\arduino-cli.exe...
2024-05-16T13:15:44.942Z root INFO Backend a.initialize: 0.3 ms [Finished 0.484 s after backend start]
2024-05-16T13:15:44.942Z root INFO Backend w.onStart: 1.2 ms [Finished 0.484 s after backend start]
2024-05-16T13:15:44.942Z root INFO Backend r.configure: 1.7 ms [Finished 0.485 s after backend start]
2024-05-16T13:15:44.942Z discovery-log INFO start
2024-05-16T13:15:44.942Z discovery-log INFO start new deferred
2024-05-16T13:15:44.942Z root INFO Backend d.initialize: 0.4 ms [Finished 0.485 s after backend start]
2024-05-16T13:15:44.942Z root INFO Backend y.onStart: 1.9 ms [Finished 0.487 s after backend start]
2024-05-16T13:15:44.942Z root INFO Backend r.configure: 1.7 ms [Finished 0.487 s after backend start]
2024-05-16T13:15:44.942Z root INFO Backend a.onStart: 0.6 ms [Finished 0.488 s after backend start]
2024-05-16T13:15:44.942Z root INFO Backend h.configure: 0.5 ms [Finished 0.488 s after backend start]
2024-05-16T13:15:44.942Z root INFO Backend s.configure: 0.1 ms [Finished 0.488 s after backend start]
2024-05-16T13:15:44.942Z root INFO Backend l.configure: 0.0 ms [Finished 0.488 s after backend start]
2024-05-16T13:15:44.944Z root INFO Theia app listening on http://127.0.0.1:53985.
2024-05-16T13:15:44.944Z root INFO Finished starting backend application: 2.3 ms [Finished 0.490 s after backend start]
2024-05-16T13:15:44.959Z root WARN The local plugin referenced by local-dir:/c%3A/Users/AUDJ9BZ/.arduinoIDE/plugins does not exist.
2024-05-16T13:15:44.959Z root WARN The local plugin referenced by local-dir:/c%3A/Users/AUDJ9BZ/.arduinoIDE/extensions does not exist.
2024-05-16T13:15:44.959Z root WARN The local plugin referenced by local-dir:C:\Users\AUDJ9BZ\.arduinoIDE\plugins does not exist.
2024-05-16T13:15:44.964Z config INFO Loaded CLI configuration: {"board_manager":{"additional_urls":[]},"build_cache":{"compilations_before_purge":10,"ttl":"720h0m0s"},"daemon":{"port":"50051"},"directories":{"data":"C:\\Users\\AUDJ9BZ\\AppData\\Local\\Arduino15","downloads":"C:\\Users\\AUDJ9BZ\\AppData\\Local\\Arduino15\\staging","user":"C:\\Users\\AUDJ9BZ\\OneDrive - Dr. Ing. h.c. F. Porsche AG\\Documents\\Arduino"},"library":{"enable_unsafe_install":false},"logging":{"file":"","format":"text","level":"info"},"metrics":{"addr":":9090","enabled":true},"output":{"no_color":false},"sketch":{"always_export_binaries":false},"updater":{"enable_notification":true}}
2024-05-16T13:15:44.964Z config INFO 'directories.data' and 'directories.user' are set in the CLI configuration model.
2024-05-16T13:15:44.964Z config INFO Loaded the CLI configuration.
2024-05-16T13:15:44.969Z config INFO Mapped the CLI configuration: {"dataDirUri":"file:///c%3A/Users/AUDJ9BZ/AppData/Local/Arduino15","sketchDirUri":"file:///c%3A/Users/AUDJ9BZ/OneDrive%20-%20Dr.%20Ing.%20h.c.%20F.%20Porsche%20AG/Documents/Arduino","additionalUrls":[],"network":"none","locale":"en"}
2024-05-16T13:15:44.969Z config INFO Validating the CLI configuration...
2024-05-16T13:15:44.970Z config INFO The CLI config is valid.
2024-05-16T13:15:44.970Z config INFO <<< Initialized the CLI configuration.
2024-05-16T13:15:44.994Z root INFO Resolve plugins list: 52.5 ms [Finished 0.539 s after backend start]
2024-05-16T13:15:45.233Z daemon INFO time="2024-05-16T15:15:45+02:00" level=info msg="Using config file: c:\\Users\\AUDJ9BZ\\.arduinoIDE\\arduino-cli.yaml"
time="2024-05-16T15:15:45+02:00" level=info msg="arduino-cli.exe version 0.35.3"
time="2024-05-16T15:15:45+02:00" level=info msg="Executing `arduino-cli daemon`"
Daemon ├╝berwacht jetzt 127.0.0.1: 53987
{"IP":"127.0.0.1","Port":"53987"}
2024-05-16T13:15:45.233Z daemon INFO Daemon is running.
2024-05-16T13:15:45.246Z daemon INFO time="2024-05-16T15:15:45+02:00" level=info msg="Updating libraries index"
2024-05-16T13:15:45.256Z daemon INFO time="2024-05-16T15:15:45+02:00" level=info msg="Starting download" url="https://downloads.arduino.cc/libraries/library_index.tar.bz2"
2024-05-16T13:15:45.773Z root INFO Deploy plugins list: 52.5 ms [Finished 1.319 s after backend start]
Opening channel for service path '/services/electron-window'.
Opening channel for service path '/services/ide-updater'.
2024-05-16T13:15:46.637Z root WARN Frontend a.configure took longer than the expected maximum 100 milliseconds: 123.0 ms [Finished 1.545 s after frontend start]
2024-05-16T13:15:46.637Z root WARN A command editor.action.toggleStickyScroll is already registered.
2024-05-16T13:15:55.315Z root ERROR Detected an error response during the gRPC core client initialization: code: 3, message: Error downloading index 'https://downloads.arduino.cc/libraries/library_index.tar.bz2': Get "https://downloads.arduino.cc/libraries/library_index.tar.bz2": dial tcp: lookup downloads.arduino.cc: getaddrinfow: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server.
2024-05-16T13:15:55.316Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Indexdatei wird geladen: loading json index file C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: The system cannot find the file specified.
2024-05-16T13:15:55.316Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:serial-discovery not found
2024-05-16T13:15:55.317Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:mdns-discovery not found
2024-05-16T13:15:55.317Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Indexdatei wird geladen: lese library_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\library_index.json: The system cannot find the file specified.
2024-05-16T13:15:55.323Z root ERROR The primary packages indexes are missing. Running indexes update before initializing the core gRPC client The index of the cores and libraries must be updated before initializing the core gRPC client.
The following problems were detected during the gRPC client initialization:
[platform-index] - code: 9, message: Indexdatei wird geladen: loading json index file C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: The system cannot find the file specified.
[platform-index] - code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:serial-discovery not found
[platform-index] - code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:mdns-discovery not found
[library-index] - code: 9, message: Indexdatei wird geladen: lese library_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\library_index.json: The system cannot find the file specified.

2024-05-16T13:15:55.323Z daemon INFO time="2024-05-16T15:15:55+02:00" level=info msg="Loading hardware from: C:\\Users\\AUDJ9BZ\\AppData\\Local\\Arduino15\\packages"
time="2024-05-16T15:15:55+02:00" level=info msg="Loading libraries index file" index="C:\\Users\\AUDJ9BZ\\AppData\\Local\\Arduino15\\library_index.json"
time="2024-05-16T15:15:55+02:00" level=info msg="Adding libraries dir" dir="C:\\Users\\AUDJ9BZ\\AppData\\Local\\Arduino15\\libraries" location=ide
time="2024-05-16T15:15:55+02:00" level=info msg="Adding libraries dir" dir="C:\\Users\\AUDJ9BZ\\OneDrive - Dr. Ing. h.c. F. Porsche AG\\Documents\\Arduino\\libraries" location=user
2024-05-16T13:15:55.324Z daemon INFO time="2024-05-16T15:15:55+02:00" level=info msg="Updating libraries index"
time="2024-05-16T15:15:55+02:00" level=info msg="Updating index" url="https://downloads.arduino.cc/packages/package_index.tar.bz2"
2024-05-16T13:15:55.328Z daemon INFO time="2024-05-16T15:15:55+02:00" level=info msg="Starting download" url="https://downloads.arduino.cc/packages/package_index.tar.bz2"
2024-05-16T13:15:55.330Z root INFO core-client-provider [platform-index] Index wird heruntergeladen: package_index.tar.bz2

2024-05-16T13:15:55.331Z root INFO core-client-provider [library-index] Index wird heruntergeladen: library_index.tar.bz2

2024-05-16T13:15:55.331Z daemon INFO time="2024-05-16T15:15:55+02:00" level=info msg="Starting download" url="https://downloads.arduino.cc/libraries/library_index.tar.bz2"
2024-05-16T13:15:55.335Z root ERROR Failed to update platform, library indexes. Error: 13 INTERNAL: Some indexes could not be updated.
    at t.callErrorFromStatus (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:763461)
    at Object.onReceiveStatus (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:791078)
    at Object.onReceiveStatus (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:784102)
    at C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:870224
    at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
for call at
    at s.makeServerStreamRequest (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:790845)
    at s.updateIndex (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:855121)
    at C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:623733
    at C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:624081
    at new Promise (<anonymous>)
    at E.doUpdateIndex (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:624060)
    at E.updatePlatformIndex (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:623705)
    at E.updateIndex (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:623073)
    at E.initInstanceWithFallback (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:621317)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
2024-05-16T13:15:55.336Z daemon INFO time="2024-05-16T15:15:55+02:00" level=info msg="Updating libraries index"
2024-05-16T13:15:55.337Z daemon INFO time="2024-05-16T15:15:55+02:00" level=info msg="Starting download" url="https://downloads.arduino.cc/libraries/library_index.tar.bz2"
2024-05-16T13:15:55.339Z root ERROR Detected an error response during the gRPC core client initialization: code: 3, message: Error downloading index 'https://downloads.arduino.cc/libraries/library_index.tar.bz2': Get "https://downloads.arduino.cc/libraries/library_index.tar.bz2": dial tcp: lookup downloads.arduino.cc: getaddrinfow: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server.
2024-05-16T13:15:55.339Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Indexdatei wird geladen: loading json index file C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: The system cannot find the file specified.
2024-05-16T13:15:55.339Z daemon INFO time="2024-05-16T15:15:55+02:00" level=info msg="Loading hardware from: C:\\Users\\AUDJ9BZ\\AppData\\Local\\Arduino15\\packages"
time="2024-05-16T15:15:55+02:00" level=info msg="Loading libraries index file" index="C:\\Users\\AUDJ9BZ\\AppData\\Local\\Arduino15\\library_index.json"
2024-05-16T13:15:55.339Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:serial-discovery not found
2024-05-16T13:15:55.339Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:mdns-discovery not found
2024-05-16T13:15:55.339Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Indexdatei wird geladen: lese library_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\library_index.json: The system cannot find the file specified.
2024-05-16T13:15:55.339Z daemon INFO time="2024-05-16T15:15:55+02:00" level=info msg="Adding libraries dir" dir="C:\\Users\\AUDJ9BZ\\AppData\\Local\\Arduino15\\libraries" location=ide
time="2024-05-16T15:15:55+02:00" level=info msg="Adding libraries dir" dir="C:\\Users\\AUDJ9BZ\\OneDrive - Dr. Ing. h.c. F. Porsche AG\\Documents\\Arduino\\libraries" location=user
2024-05-16T13:15:55.342Z root ERROR Uncaught Exception:  Error: The index of the cores and libraries must be updated before initializing the core gRPC client.
The following problems were detected during the gRPC client initialization:
[platform-index] - code: 9, message: Indexdatei wird geladen: loading json index file C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: The system cannot find the file specified.
[platform-index] - code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:serial-discovery not found
[platform-index] - code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:mdns-discovery not found
[library-index] - code: 9, message: Indexdatei wird geladen: lese library_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\library_index.json: The system cannot find the file specified.

2024-05-16T13:15:55.342Z root ERROR Error: The index of the cores and libraries must be updated before initializing the core gRPC client.
The following problems were detected during the gRPC client initialization:
[platform-index] - code: 9, message: Indexdatei wird geladen: loading json index file C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\package_index.json: The system cannot find the file specified.
[platform-index] - code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:serial-discovery not found
[platform-index] - code: 9, message: Fehler beim Laden der Hardware-Plattform: discovery builtin:mdns-discovery not found
[library-index] - code: 9, message: Indexdatei wird geladen: lese library_index.json: open C:\Users\AUDJ9BZ\AppData\Local\Arduino15\library_index.json: The system cannot find the file specified.

    at C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:622877
    at E.evaluateErrorStatus (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:622893)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async a.<anonymous> (C:\Users\AUDJ9BZ\AppData\Local\Programs\Arduino IDE\resources\app\lib\backend\main.js:2:622563)

thx in advance for fast reply!

Hi @luftgekuehlt

Does the problem still occur if you close any open Arduino IDE windows and then try starting it again now? It is possible this was caused by a temporary network degradation, which usually pass after a matter of minutes.

On the first run after a fresh installation, Arduino IDE downloads some additional essential components from the Internet and installs them. If it can't install those components then the startup fails. So the computer must have access to the Internet on the first startup.

If it is not already, please connect your computer to the Internet.

After that first run, an Internet connection is not required. However, there are some supplemental features such as "Library Manager" that have an inherent dependency on the Internet. Those features will not be usable while your computer is offline. But the essential functionality of editing, compiling, and uploading sketches will be available even without an Internet connection.

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