Learn how to uninstall Arduino IDE.

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Uninstalling the application

• Windows:
  • In Windows 10/11: Open the start menu and find the Arduino application. Right-click on it and select Uninstall.
  • Alternatively, open the Arduino IDE installation folder in Explorer and run the Uninstall Arduino IDE.exe (IDE 2) / uninstall.exe (IDE 1) executable.
• macOS:
  1. Open Finder.
  2. Go to the Applications folder.
  3. Remove the Arduino.app or Arduino IDE.app application.
• Linux: The application files are located wherever they were extracted in the installation process. If you need help finding it you can follow these steps.

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Removing additional files

Arduino IDE saves your sketches, library files and board cores outside the application folder. This way, they will still be available if you’re updating Arduino IDE to a different version, or if you reinstall it later. Optionally, you can also remove these files.

If you’re reinstalling Arduino IDE as a troubleshooting procedure, try the following:

• To resolve console errors that appear when compiling or uploading sketches, remove the Arduino15 and libraries subfolder and restart Arduino IDE.
• To resolve problems with Arduino IDE itself, remove the User data folder and restart Arduino IDE.

Sketchbook

The Sketchbook contains your saved sketches and installed libraries.

Default Sketchbook location:

• Windows: C:\Users\{username}\Documents\Arduino
• macOS: /Users/{username}/Documents/Arduino
• Linux: /home/{username}/Arduino

Default libraries subfolder location:

• Windows: C:\Users\{username}\Documents\Arduino\libraries
• macOS: /Users/{username}/Documents/Arduino/libraries
• Linux: /home/{username}/Arduino/libraries

Arduino15 folder

The Arduino15 folder contains installed board packages and tools.

Default location:

• Windows: C:\Users\{username}\AppData\Local\Arduino15. Open your Users folder in Explorer and look for a folder called AppData.
  • This folder is hidden by default. In newer versions of Windows, you can display hidden items by clicking the View tab, and checking Hidden items.
• macOS: /Users/{username}/Library/Arduino15. Open Finder and navigate to the home folder (/Users/{username}). From the Finder menu bar, click on View > Show View Options, and tick Show Library Folder. The Arduino15 folder can now be found in {username}/Library.
• Linux: The folder is located in /home/{username}/.arduino15 and is hidden by default. To show it, click the hamburger button and check Show Hidden Files.

Configuration folder (.arduinoIDE)

The .arduinoIDE folder contains configuration files like settings.json and arduino-cli.yaml.

Default location:

• Windows: C:\Users\{username}\.arduinoIDE (hidden)
• macOS: /Users/{username}/.arduinoIDE (hidden)
• Linux: /home/{username}/.arduinoIDE (hidden)

This folder is only used by Arduino IDE 2.

User data folder (arduino-ide)

The arduino-ide folder contains various temporary files. Removing this folder can sometimes resolve problems with Arduino IDE.

Default location:

• Windows: C:\Users\{username}\AppData\Roaming\arduino-ide\
• macOS: ~/Library/Application Support/arduino-ide/
• Linux: ~/.config/arduino-ide/

This folder is only used by Arduino IDE 2.