No boards available in the boards list

Development Tools IDE 2.x
1

Hi, I have a problem with boards installation: installation succeeds and I can see new folders created in %APPDATA%\Local\Arduino15\packages\arduino\hardware, but the boards list in the UI is still empty and the boards manager shows the board as it is not installed.
However, at the same time I have no problems with libraries, installed ones are visible.
I'm using the latest Windows 11 and Arduino IDE versions.
Will appreciate any help. Thanks.

2

Hi @dnk1. I'm going to ask you to provide some additional information that might help us to identify the problem.

:exclamation: This procedure is not intended to solve the problem. The purpose is to gather more information.

Please do this:

  1. Select File > Quit from the Arduino IDE menus if it is running.
    All Arduino IDE windows will close.
  2. Start Windows "File Explorer".
  3. 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)
      :exclamation: 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".
  4. In the folder listing of the Arduino IDE installation folder, hold the Shift key while clicking the right hand button on the mouse.
    A context menu will open.
  5. Select "Open PowerShell window here" from the menu.
    Windows PowerShell will now open with the current directory set to the Arduino IDE installation folder.
  6. Type the following command:
    & ".\Arduino IDE"
  7. Press the Enter key.
    Debug output should now be printed to the PowerShell window as Arduino IDE starts.
  8. Wait for Arduino IDE to finish starting completely.
  9. Switch back to the PowerShell window.
  10. Press the Ctrl+Shift+A keyboard shortcut.
    This will select all the text in the PowerShell window.
  11. Press the Ctrl+C keyboard shortcut.
    This will copy the contents of the PowerShell window to the clipboard.
  12. Open a forum reply here by clicking the "Reply" button.
  13. 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.
    Code block icon on toolbar
    Code block icon on toolbar390×118 4.25 KB
  14. Press the Ctrl+V keyboard shortcut.
    This will paste the output into the code block.
  15. Move the cursor outside of the code block markup before you add any additional text to your reply.
  16. Click the "Reply" button to post the output.

Please let me know if you have any questions or problems while following those instructions.

3

Thank you for the answer and the guidance.
The log shows several errors like this:

ERROR Detected an error response during the gRPC core client initialization: code: 9, message: Error loading hardware platform: following symlink c:\Users\user\AppData\Local\Arduino15\packages: EvalSymlinks: too many links

Most probably this is caused by my setup: C:\Users is a separate disk volume mounted to this path, like it's described, for example, here: How to mount a drive as a folder on Windows - Pureinfotech
If such setup is not supported by Arduino IDE, would it be possible to load boards folders from somewhere else? I've tried to copy them into the app and documents folders, however this didn't work.

4

I've created a bug report for the issue, hope for a fix:

5

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