IDE hangs on startup: "discovery teensy:teensy-discovery not found"

swri · July 5, 2023, 3:20pm

Cannot open Arduino 2.1.0 on new machine

Please do this:
Close all Arduino IDE windows if the IDE is already running.

Start Windows "File Explorer".
Open the Arduino IDE installation folder.
ⓘ The default installation location is at one of the following paths:
C:\Program Files\Arduino IDE
C:\Users\<username>\AppData\Local\Programs\Arduino IDE
(where <username> is your Windows username)
If looking for it with your file manager or command line, note that the AppData folder is hidden by default. On Windows "File Explorer", you can make it visible by opening the "View" menu, then checking the box next to "☐ Hidden items".
In the folder listing of the Arduino IDE installation folder, hold the Shift key while clicking the right hand button on the mouse.

From the context menu, click "Open PowerShell window here".
Windows PowerShell will now open with the current directory set to the Arduino IDE installation folder.
Type the following command:
& ".\Arduino IDE"
Press the Enter key.
Debug output should now be printed to the PowerShell window as Arduino IDE starts.

Wait until you are sure the IDE startup has gone into the hang state
(as indicated by no additional output being printed to the terminal).

Switch back to the PowerShell window if the Arduino IDE window took the focus.

Right click on the title bar of the PowerShell window.
This will open a context menu.

Select Edit > Select All from the context menu.
This will select all the text in the PowerShell window.

Press Ctrl+C.
This will copy the contents of the PowerShell window to the clipboard.

Open a forum reply here by clicking the Reply button.

Click the <CODE/> icon on the post composer toolbar.
This will add the forum's code block markup (```) to your reply to make sure the error messages are correctly formatted.

Press Ctrl+V.
This will paste the output into the code block.

Move the cursor outside of the code block markup before you add any additional text to your reply.

Click the Reply button to post the output.

PS C:\Users\KSaleh\AppData\Local\Programs\arduino-ide>
Arduino IDE 2.1.0
Starting backend process. PID: 19824
Using browser-only version of superagent in non-browser environment
Configuration directory URI: 'file:///c%3A/Users/KSaleh/.theia'
Configuring to accept webviews on '^.+\.webview\..+$' hostname.
2023-07-05T15:12:08.554Z root INFO Backend Object.initialize: 4.0 ms [Finished 1.650 s after backend start]
2023-07-05T15:12:08.554Z root INFO Backend Object.configure: 3.2 ms [Finished 1.650 s after backend start]
2023-07-05T15:12:08.556Z root INFO Backend MessagingContribution.onStart: 1.4 ms [Finished 1.650 s after backend start]
2023-07-05T15:12:08.556Z root INFO Backend OSBackendApplicationContribution.configure: 0.3 ms [Finished 1.688 s after backend start]
2023-07-05T15:12:08.557Z root INFO Backend DefaultWorkspaceServer.onStart: 0.3 ms [Finished 1.688 s after backend start]2023-07-05T15:12:08.558Z root INFO Backend PluginLocalizationBackendContribution.configure: 0.1 ms [Finished 1.688 s after backend start]
2023-07-05T15:12:08.559Z root INFO Backend PluginLocalizationBackendContribution.initialize: 37.7 ms [Finished 1.689 s after backend start]
2023-07-05T15:12:08.559Z root INFO Backend TaskBackendApplicationContribution.onStart: 0.2 ms [Finished 1.689 s after backend start]
2023-07-05T15:12:08.560Z root INFO Backend ElectronTokenBackendContribution.configure: 2.3 ms [Finished 1.691 s after backend start]
2023-07-05T15:12:08.561Z config INFO >>> Initializing CLI configuration...
2023-07-05T15:12:08.561Z root INFO Backend PluginDeployerContribution.initialize: 0.6 ms [Finished 1.691 s after backend start]
2023-07-05T15:12:08.561Z root INFO Backend ConfigServiceImpl.onStart: 1.0 ms [Finished 1.692 s after backend start]
2023-07-05T15:12:08.562Z config INFO Loading CLI configuration from c:\Users\KSaleh\.arduinoIDE\arduino-cli.yaml...
2023-07-05T15:12:08.563Z root INFO Backend WebviewBackendSecurityWarnings.initialize: 0.4 ms [Finished 1.693 s after backend start]
2023-07-05T15:12:08.563Z root INFO Backend ArduinoDaemonImpl.onStart: 1.2 ms [Finished 1.694 s after backend start]
2023-07-05T15:12:08.563Z root INFO Backend NodeFileUploadService.configure: 2.0 ms [Finished 1.694 s after backend start]
2023-07-05T15:12:08.563Z daemon INFO Starting daemon from C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\node_modules\arduino-ide-extension\build\arduino-cli.exe...
2023-07-05T15:12:08.563Z discovery-log INFO start
2023-07-05T15:12:08.564Z discovery-log INFO start new deferred
2023-07-05T15:12:08.564Z root INFO Backend HostedPluginLocalizationService.initialize: 0.4 ms [Finished 1.695 s after backend start]
2023-07-05T15:12:08.564Z root INFO Backend BoardDiscovery.onStart: 1.1 ms [Finished 1.696 s after backend start]
2023-07-05T15:12:08.564Z root INFO Backend FileDownloadEndpoint.configure: 1.1 ms [Finished 1.696 s after backend start]2023-07-05T15:12:08.564Z root INFO Backend AuthenticationServiceImpl.onStart: 0.3 ms [Finished 1.698 s after backend start]
2023-07-05T15:12:08.564Z root INFO Backend PluginApiContribution.configure: 0.4 ms [Finished 1.698 s after backend start]
2023-07-05T15:12:08.566Z root INFO Backend HostedPluginReader.configure: 0.4 ms [Finished 1.699 s after backend start]
2023-07-05T15:12:08.568Z root INFO Backend HostedPluginReader.configure: 0.1 ms [Finished 1.699 s after backend start]
2023-07-05T15:12:08.568Z root INFO Backend PlotterBackendContribution.configure: 1.1 ms [Finished 1.700 s after backend start]
2023-07-05T15:12:08.570Z root INFO Theia app listening on http://localhost:61834.
2023-07-05T15:12:08.571Z root INFO Finished starting backend application: 7.2 ms [Finished 1.705 s after backend start]
2023-07-05T15:12:08.585Z root WARN The local plugin referenced by local-dir:/c%3A/Users/KSaleh/.arduinoIDE/plugins does not exist.
2023-07-05T15:12:08.585Z root WARN The local plugin referenced by local-dir:/c%3A/Users/KSaleh/.arduinoIDE/extensions does not exist.
2023-07-05T15:12:08.588Z root WARN The local plugin referenced by local-dir:C:\Users\KSaleh\.arduinoIDE\plugins does not exist.
2023-07-05T15:12:08.612Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.612Z root INFO Resolved "cortex-debug" to a VS Code extension "cortex-debug@1.5.1" with engines:
2023-07-05T15:12:08.615Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.626Z root INFO Resolved "vscode-arduino-tools" to a VS Code extension "vscode-arduino-tools@0.0.2-beta.8" with engines:
2023-07-05T15:12:08.627Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.627Z root INFO Resolved "vscode-builtin-cpp" to a VS Code extension "cpp@1.52.1" with engines:
2023-07-05T15:12:08.632Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.633Z root INFO Resolved "vscode-builtin-json" to a VS Code extension "json@1.46.1" with engines:
2023-07-05T15:12:08.634Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.635Z root INFO Resolved "vscode-builtin-json-language-features" to a VS Code extension "json-language-features@1.46.1" with engines:
2023-07-05T15:12:08.635Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.637Z root INFO Resolved "vscode-language-pack-bg" to a VS Code extension "vscode-language-pack-bg@1.48.3" with engines:
2023-07-05T15:12:08.638Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.642Z root INFO Resolved "vscode-language-pack-cs" to a VS Code extension "vscode-language-pack-cs@1.53.2" with engines:
2023-07-05T15:12:08.643Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.643Z root INFO Resolved "vscode-language-pack-de" to a VS Code extension "vscode-language-pack-de@1.53.2" with engines:
2023-07-05T15:12:08.643Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.644Z root INFO Resolved "vscode-language-pack-es" to a VS Code extension "vscode-language-pack-es@1.53.2" with engines:
2023-07-05T15:12:08.644Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.645Z root INFO Resolved "vscode-language-pack-fr" to a VS Code extension "vscode-language-pack-fr@1.53.2" with engines:
2023-07-05T15:12:08.645Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.648Z root INFO Resolved "vscode-language-pack-hu" to a VS Code extension "vscode-language-pack-hu@1.48.3" with engines:
2023-07-05T15:12:08.654Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.654Z root INFO Resolved "vscode-language-pack-it" to a VS Code extension "vscode-language-pack-it@1.53.2" with engines:
2023-07-05T15:12:08.655Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.656Z root INFO Resolved "vscode-language-pack-ja" to a VS Code extension "vscode-language-pack-ja@1.53.2" with engines:
2023-07-05T15:12:08.656Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.659Z root INFO Resolved "vscode-language-pack-ko" to a VS Code extension "vscode-language-pack-ko@1.53.2" with engines:
2023-07-05T15:12:08.661Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.664Z root INFO Resolved "vscode-language-pack-nl" to a VS Code extension "vscode-language-pack-nl@1.48.3" with engines:
2023-07-05T15:12:08.665Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.665Z root INFO Resolved "vscode-language-pack-pl" to a VS Code extension "vscode-language-pack-pl@1.53.2" with engines:
2023-07-05T15:12:08.666Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.667Z root INFO Resolved "vscode-language-pack-pt-BR" to a VS Code extension "vscode-language-pack-pt-BR@1.53.2" with engines:
2023-07-05T15:12:08.668Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.668Z root INFO Resolved "vscode-language-pack-ru" to a VS Code extension "vscode-language-pack-ru@1.53.2" with engines:
2023-07-05T15:12:08.671Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.675Z root INFO Resolved "vscode-language-pack-tr" to a VS Code extension "vscode-language-pack-tr@1.53.2" with engines:
2023-07-05T15:12:08.676Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.676Z root INFO Resolved "vscode-language-pack-uk" to a VS Code extension "vscode-language-pack-uk@1.48.3" with engines:
2023-07-05T15:12:08.677Z root INFO PluginTheiaDirectoryHandler: accepting plugin with path
2023-07-05T15:12:08.677Z root INFO Resolved "vscode-language-pack-zh-hans" to a VS Code extension "vscode-language-pack-zh-hans@1.53.2" with engines:
2023-07-05T15:12:08.684Z config INFO Loaded CLI configuration: {"board_manager":{"additional_urls":[]},"build_cache":{"compilations_before_purge":10,"ttl":"720h0m0s"},"daemon":{"port":"50051"},"directories":{"data":"C:\\Users\\KSaleh\\AppData\\Local\\Arduino15","downloads":"C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\staging","user":"C:\\Users\\KSaleh\\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}}
2023-07-05T15:12:08.684Z config INFO 'directories.data' and 'directories.user' are set in the CLI configuration model.
2023-07-05T15:12:08.688Z config INFO Loaded the CLI configuration.
2023-07-05T15:12:08.689Z config INFO Mapped the CLI configuration: {"dataDirUri":"file:///c%3A/Users/KSaleh/AppData/Local/Arduino15","sketchDirUri":"file:///c%3A/Users/KSaleh/Documents/Arduino","additionalUrls":[],"network":"none","locale":"en"}
2023-07-05T15:12:08.689Z config INFO Validating the CLI configuration...
2023-07-05T15:12:08.691Z config INFO The CLI config is valid.
2023-07-05T15:12:08.692Z config INFO <<< Initialized the CLI configuration.
2023-07-05T15:12:08.708Z root INFO Resolve plugins list: 145.8 ms [Finished 1.842 s after backend start]
2023-07-05T15:12:08.712Z root INFO Deployed backend plugin "marus25.cortex-debug@1.5.1" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\cortex-debug\extension\dist\extension.js": 3.8 ms [Finished 1.846 s after backend start]
2023-07-05T15:12:08.717Z root INFO Deployed backend plugin "arduino.vscode-arduino-tools@0.0.2-beta.8" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-arduino-tools\extension\dist\bundle": 5.2 ms [Finished 1.852 s after backend start]
2023-07-05T15:12:08.725Z root INFO Deployed backend plugin "vscode.cpp@1.52.1" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-builtin-cpp\extension": 8.4 ms [Finished 1.860 s after backend start]
2023-07-05T15:12:08.727Z root INFO Deployed backend plugin "vscode.json@1.46.1" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-builtin-json\extension": 1.9 ms [Finished 1.862 s after backend start]
2023-07-05T15:12:08.728Z root INFO Deployed backend plugin "vscode.json-language-features@1.46.1" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-builtin-json-language-features\extension\client\dist\jsonMain": 0.6 ms [Finished 1.863 s after backend start]
2023-07-05T15:12:08.808Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-bg@1.48.3" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-bg\extension": 79.9 ms [Finished 1.943 s after backend start]
2023-07-05T15:12:08.830Z daemon INFO INFO[0000] Using config file: c:\Users\KSaleh\.arduinoIDE\arduino-cli.yaml
INFO[0000] arduino-cli.exe version 0.32.2
INFO[0000] Executing `arduino-cli daemon`
Daemon is now listening on 127.0.0.1:61835
{"IP":"127.0.0.1","Port":"61835"}


2023-07-05T15:12:08.831Z daemon INFO Daemon is running.
2023-07-05T15:12:08.944Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-cs@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-cs\extension": 135.9 ms [Finished 2.079 s after backend start]
2023-07-05T15:12:08.949Z daemon INFO INFO[0000] Loading hardware from: C:\Users\KSaleh\AppData\Local\Arduino15\packages

2023-07-05T15:12:09.041Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-de@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-de\extension": 97.2 ms [Finished 2.176 s after backend start]
2023-07-05T15:12:09.042Z daemon INFO INFO[0000] Loading package arduino from: C:\Users\KSaleh\AppData\Local\Arduino15\packages\arduino\hardware
INFO[0000] Adding monitor tool                           protocol=serial tool="builtin:serial-monitor"
INFO[0000] Loaded platform                               platform="arduino:avr@1.8.4"
INFO[0000] Checking existence of 'tools' path: C:\Users\KSaleh\AppData\Local\Arduino15\packages\arduino\tools
INFO[0000] Loading tools from dir: C:\Users\KSaleh\AppData\Local\Arduino15\packages\arduino\tools
INFO[0000] Loaded tool                                   tool="arduino:arduinoOTA@1.3.0"
INFO[0000] Loaded tool                                   tool="arduino:avr-gcc@7.3.0-atmel3.6.1-arduino7"
INFO[0000] Loaded tool                                   tool="arduino:avrdude@6.3.0-arduino17"
INFO[0000] Loading package builtin from: C:\Users\KSaleh\AppData\Local\Arduino15\packages\builtin
INFO[0000] Checking existence of 'tools' path: C:\Users\KSaleh\AppData\Local\Arduino15\packages\builtin\tools
INFO[0000] Loading tools from dir: C:\Users\KSaleh\AppData\Local\Arduino15\packages\builtin\tools
INFO[0000] Loaded tool                                   tool="builtin:ctags@5.8-arduino11"
INFO[0000] Loaded tool                                   tool="builtin:dfu-discovery@0.1.2"
INFO[0000] Loaded tool                                   tool="builtin:mdns-discovery@1.0.8"
INFO[0000] Loaded tool                                   tool="builtin:mdns-discovery@1.0.9"
INFO[0000] Loaded tool                                   tool="builtin:serial-discovery@1.4.0"
INFO[0000] Loaded tool                                   tool="builtin:serial-monitor@0.13.0"
INFO[0000] Loading package teensy from: C:\Users\KSaleh\AppData\Local\Arduino15\packages\teensy\hardware
INFO[0000] Adding monitor tool                           protocol=teensy tool="teensy:teensy-monitor"
INFO[0000] Loaded platform                               platform="teensy:avr@1.57.2"
INFO[0000] Checking existence of 'tools' path: C:\Users\KSaleh\AppData\Local\Arduino15\packages\teensy\tools
INFO[0000] Loading tools from dir: C:\Users\KSaleh\AppData\Local\Arduino15\packages\teensy\tools
INFO[0000] Loaded tool                                   tool="teensy:teensy-compile@5.4.1"
INFO[0000] Loaded tool                                   tool="teensy:teensy-tools@1.57.2"
INFO[0000] Loaded tool                                   tool="teensy:teensy-tools@teensy-discovery"
INFO[0000] Loaded tool                                   tool="teensy:teensy-tools@teensy-monitor"
INFO[0000] Checking signature                            index="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\package_index.json" signatureFile="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\package_index.json.sig" trusted=true
INFO[0000] Adding libraries dir                          dir="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.4\\libraries" location=platform
INFO[0000] Adding libraries dir                          dir="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\1.57.2\\libraries" location=platform
INFO[0000] Loading libraries index file                  index="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\library_index.json"

2023-07-05T15:12:09.045Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Error loading hardware platform: discovery teensy:teensy-discovery not found
2023-07-05T15:12:09.124Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-es@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-es\extension": 83.3 ms [Finished 2.259 s after backend start]
2023-07-05T15:12:09.193Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-fr@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-fr\extension": 68.4 ms [Finished 2.328 s after backend start]
2023-07-05T15:12:09.193Z daemon INFO INFO[0000] Adding libraries dir                          dir="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\libraries" location=ide
INFO[0000] Adding libraries dir                          dir="C:\\Users\\KSaleh\\Documents\\Arduino\\libraries" location=user

2023-07-05T15:12:09.243Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-hu@1.48.3" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-hu\extension": 49.7 ms [Finished 2.377 s after backend start]
2023-07-05T15:12:09.312Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-it@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-it\extension": 69.5 ms [Finished 2.447 s after backend start]
2023-07-05T15:12:09.375Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-ja@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-ja\extension": 63.1 ms [Finished 2.510 s after backend start]
2023-07-05T15:12:09.444Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-ko@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-ko\extension": 68.1 ms [Finished 2.578 s after backend start]
2023-07-05T15:12:09.485Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-nl@1.48.3" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-nl\extension": 41.0 ms [Finished 2.619 s after backend start]
2023-07-05T15:12:09.546Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-pl@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-pl\extension": 61.6 ms [Finished 2.681 s after backend start]
2023-07-05T15:12:09.605Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-pt-br@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-pt-BR\extension": 59.1 ms [Finished 2.740 s after backend start]
2023-07-05T15:12:09.674Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-ru@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-ru\extension": 68.1 ms [Finished 2.808 s after backend start]
2023-07-05T15:12:09.731Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-tr@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-tr\extension": 57.4 ms [Finished 2.866 s after backend start]
2023-07-05T15:12:09.770Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-uk@1.48.3" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-uk\extension": 38.7 ms [Finished 2.905 s after backend start]
2023-07-05T15:12:09.843Z root INFO Deployed backend plugin "ms-ceintl.vscode-language-pack-zh-hans@1.53.2" from "C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\plugins\vscode-language-pack-zh-hans\extension": 72.6 ms [Finished 2.977 s after backend start]
2023-07-05T15:12:09.843Z root INFO Deploy plugins list: 145.8 ms [Finished 2.977 s after backend start]
Opening channel for service path '/services/electron-window-ext'.
Opening channel for service path '/services/electron-window'.
Opening channel for service path '/services/ide-updater'.
2023-07-05T15:12:10.355Z root WARN Frontend a.configure took longer than the expected maximum 100 milliseconds: 174.0 ms [Finished 1.680 s after frontend start]
2023-07-05T15:12:11.807Z root ERROR The primary packages indexes are missing. Running indexes update before initializing the core gRPC client
2023-07-05T15:12:11.808Z daemon INFO INFO[0003] Updating index                                url="https://downloads.arduino.cc/packages/package_index.tar.bz2"

2023-07-05T15:12:11.811Z root INFO core-client-provider [platform-index]
2023-07-05T15:12:11.815Z daemon INFO INFO[0003] Starting download                             url="https://downloads.arduino.cc/packages/package_index.tar.bz2"

2023-07-05T15:12:12.273Z daemon INFO INFO[0003] Loading hardware from: C:\Users\KSaleh\AppData\Local\Arduino15\packages

2023-07-05T15:12:12.274Z daemon INFO INFO[0003] Loading package arduino from: C:\Users\KSaleh\AppData\Local\Arduino15\packages\arduino\hardware

2023-07-05T15:12:12.277Z daemon INFO INFO[0003] Adding monitor tool                           protocol=serial tool="builtin:serial-monitor"
INFO[0003] Loaded platform                               platform="arduino:avr@1.8.4"

2023-07-05T15:12:12.277Z daemon INFO INFO[0003] Checking existence of 'tools' path: C:\Users\KSaleh\AppData\Local\Arduino15\packages\arduino\tools
INFO[0003] Loading tools from dir: C:\Users\KSaleh\AppData\Local\Arduino15\packages\arduino\tools

2023-07-05T15:12:12.280Z daemon INFO INFO[0003] Loaded tool                                   tool="arduino:arduinoOTA@1.3.0"
INFO[0003] Loaded tool                                   tool="arduino:avr-gcc@7.3.0-atmel3.6.1-arduino7"
INFO[0003] Loaded tool                                   tool="arduino:avrdude@6.3.0-arduino17"
INFO[0003] Loading package builtin from: C:\Users\KSaleh\AppData\Local\Arduino15\packages\builtin
INFO[0003] Checking existence of 'tools' path: C:\Users\KSaleh\AppData\Local\Arduino15\packages\builtin\tools
INFO[0003] Loading tools from dir: C:\Users\KSaleh\AppData\Local\Arduino15\packages\builtin\tools
INFO[0003] Loaded tool                                   tool="builtin:ctags@5.8-arduino11"
INFO[0003] Loaded tool                                   tool="builtin:dfu-discovery@0.1.2"
INFO[0003] Loaded tool                                   tool="builtin:mdns-discovery@1.0.8"
INFO[0003] Loaded tool                                   tool="builtin:mdns-discovery@1.0.9"
INFO[0003] Loaded tool                                   tool="builtin:serial-discovery@1.4.0"
INFO[0003] Loaded tool                                   tool="builtin:serial-monitor@0.13.0"

2023-07-05T15:12:12.281Z daemon INFO INFO[0003] Loading package teensy from: C:\Users\KSaleh\AppData\Local\Arduino15\packages\teensy\hardware

2023-07-05T15:12:12.286Z daemon INFO INFO[0003] Adding monitor tool                           protocol=teensy tool="teensy:teensy-monitor"
INFO[0003] Loaded platform                               platform="teensy:avr@1.57.2"

2023-07-05T15:12:12.288Z daemon INFO INFO[0003] Checking existence of 'tools' path: C:\Users\KSaleh\AppData\Local\Arduino15\packages\teensy\tools
INFO[0003] Loading tools from dir: C:\Users\KSaleh\AppData\Local\Arduino15\packages\teensy\tools
INFO[0003] Loaded tool                                   tool="teensy:teensy-compile@5.4.1"
INFO[0003] Loaded tool                                   tool="teensy:teensy-tools@1.57.2"
INFO[0003] Loaded tool                                   tool="teensy:teensy-tools@teensy-discovery"
INFO[0003] Loaded tool                                   tool="teensy:teensy-tools@teensy-monitor"

2023-07-05T15:12:12.298Z daemon INFO INFO[0003] Checking signature                            index="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\package_index.json" signatureFile="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\package_index.json.sig" trusted=true

2023-07-05T15:12:12.301Z root ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Error loading hardware platform: discovery teensy:teensy-discovery not found
2023-07-05T15:12:12.305Z daemon INFO INFO[0003] Adding libraries dir                          dir="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.4\\libraries" location=platform

2023-07-05T15:12:12.307Z daemon INFO INFO[0003] Adding libraries dir                          dir="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\\1.57.2\\libraries" location=platform
INFO[0003] Loading libraries index file                  index="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\library_index.json"

2023-07-05T15:12:12.433Z daemon INFO INFO[0003] Adding libraries dir                          dir="C:\\Users\\KSaleh\\AppData\\Local\\Arduino15\\libraries" location=ide

2023-07-05T15:12:12.434Z daemon INFO INFO[0003] Adding libraries dir                          dir="C:\\Users\\KSaleh\\Documents\\Arduino\\libraries" location=user

2023-07-05T15:12:14.892Z root ERROR Uncaught Exception:
2023-07-05T15:12:14.893Z 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: Error loading hardware platform: discovery teensy:teensy-discovery not found

    at isIndexUpdateRequiredBeforeInit (C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\node_modules\arduino-ide-extension\lib\node\core-client-provider.js:388:11)
    at CoreClientProvider.evaluateErrorStatus (C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\node_modules\arduino-ide-extension\lib\node\core-client-provider.js:200:16)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async ClientReadableStreamImpl.<anonymous> (C:\Users\KSaleh\AppData\Local\Programs\arduino-ide\resources\app\node_modules\arduino-ide-extension\lib\node\core-client-provider.js:184:31)
[168:0705/101407.152:ERROR:gpu_init.cc(453)] Passthrough is not supported, GL is disabled, ANGLE is

Gideon_Jonkers · February 13, 2024, 7:52am

I have found that if you delete the package_teensy_index.json file in the arduino15 folder in AppData\local\arduino15 and delete the teensy folder in the packages folder and start the ide it fires right up. You will just have to follow the instructions for reinstalling teensy for Arduino 2.x

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IDE hangs on startup: "discovery teensy:teensy-discovery not found"

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