How do I reset my arduino installation back to its original state? i.e., no extra downloaded libraries, etc. If I delete Documents/Arduino/libraries is there any other state that needs to be cleaned up?

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    What operating system are you using? Did you use the installer or the portable zip? – tttapa Jul 21 '18 at 22:04
  1. Delete the Documents -> Arduino -> Libraries to remove all your libraries.

  2. Delete the User -> AppData -> Local -> Arduino15 folder to remove all the preferences.

  3. Uninstall Arduino IDE.

  4. Install a fresh one.

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    That won't be enough. Hardware packages and user configurations are saved in a hidden folder. – tttapa Jul 22 '18 at 6:53
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    @tttapa, I thought OP referred to the libraries only. Aren't the hardware/programmer profiles stored in the Arduino folder in program files? – Shibalicious Jul 22 '18 at 14:53
  • @tttapa, I ran grep on my entire C drive where Arduino IDE is installed, there are only three folders: one in Program Files, one in Documents, the last one in AppData, called Arduino15, so you are right :) – Shibalicious Jul 22 '18 at 15:07

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