How to uninstall "Arduino AVR Boards" from Board Manager

Development Tools IDE 1.x
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I want to uninstall this:

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I am using Arduino IDE 1.8.19
I tried to fix it from this topic made on this forum here but when I reinstalled Arduino IDE 1.8.19 afterwards, it was still installed.
I deleted and reinstalled and it was still there.

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Hi @danceuser3

This is expected. The "Arduino AVR Boards" platform is bundled with the Arduino IDE 1.x installation. So you would need to repeat those instructions after every time you installed or updated the IDE.

Alternatively, you can use Arduino IDE 2.x. Unlike Arduino IDE 1.x, the "Arduino AVR Boards" platform is not bundled with the Arduino IDE 2.x installation. Arduino IDE 2.x does automatically install "Arduino AVR Boards" via Boards Manager the first time you run it, but you can uninstall the platform in the Arduino IDE 2.x Boards Manager and the IDE will not install it again after that.

In case you decide to give Arduino IDE 2.x a try, I'll provide instructions for uninstalling the "Arduino AVR Boards" platform:

  1. Select Tools > Board > Boards Manager from the Arduino IDE menus to open the "Boards Manager" view in the left side panel.
  2. Scroll down through the list of boards platforms until you see the "Arduino AVR Boards" entry.
  3. Hover the mouse pointer over the "INSTALLED" label on the "Arduino AVR Boards" entry. You will now see it change to an "UNINSTALL" button.
  4. Click the "UNINSTALL" button.
  5. Wait for the uninstallation to finish.
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