Arduino IDE won't open

[deus1abacate]

The logo keeps getting smaller and bigger but nothing happens.I’m on win 10. I saw another posts talking about it but didn’t find my problem.Using powershell to open it I get this error (I’ll translate what is in another language):

The following problems were detected during the gRPC client initialization:
[library-index] - code: 9, message: Loading index file: 
reading library_index.json: open C:\Users\arthu\AppData\Local\Arduino15\library_index.json: 
The system can't find the especified file at C:\Program Files\Arduino IDE\resources\app\lib\backend\main.js:2:6283973 at y.evaluateErrorStatus 
(C:\Program Files\Arduino IDE\resources\app\lib\backend\main.js:2:6283989) at 
process.processTicksAndRejections (node:internal/process/task_queues:95:5) at 
async a.<anonymous> (C:\Program Files\Arduino 
IDE\resources\app\lib\backend\main.js:2:6283659)

A clean install didn’t help

[ptillisch]

Hi @deus1abacate. Please provide the full output from the PowerShell terminal. You don't need to translate it.

I'll provide instructions you can follow to do that:

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

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1. Close all Arduino IDE windows if the IDE is already running.
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)
     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 in the PowerShell window:

   & ".\Arduino IDE"
   

7. Press the Enter key.
   Debug output should now be printed to the PowerShell window as Arduino IDE starts.
8. 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).
9. Switch back to the PowerShell window if the Arduino IDE window took the focus.
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 reply here on this forum topic 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.
    
    
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 publish the post.

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