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  1. forum.arduino.cc › t › boards-manager-error-downloading-http-downloads-arduino-ccBoards Manager - Error Downloading...

    31 lip 2018 · It seems Arduino IDE 1.8.5 and older try to use a partially downloaded package_index.json file so if something get's corrupted with that file it causes this 416 error. The solution is to delete the file.

    • Boards Manager

      I've been working on the same problem for more than a week....

    • Arduino Due

      The Arduino Due ARM Cortex-M3 based board. Arduino Forum...

    • Hardware

      Topics about Arduino boards, shields and kits. Hardware UNO...

  2. forum.arduino.cc › t › arduino-ide-cant-download-libraries-and-boardsArduino IDE can't download libraries and Boards

    21 kwi 2020 · Before that i was able to explore the Boards and Libraries Managers without any problems, but now if I open Boards manager i can see only the first choice (Arduino AVR Boards) and the window gives me this error: Error downloading https://downloads.arduino.cc/packages/package_index.json.

  3. forum.arduino.cc › t › unable-to-download-via-board-manager-but-can-access-via-theUnable to download via board manager but can access via the web

    16 wrz 2021 · Error downloading https://downloads.arduino.cc/packages/package_index.json. Can access these if we try to browse them on the web. Domain network, no admin access. downloads.arduino.cc has been added to our firewall whitelist rules. Any suggestions to get the board manager to work in our environment?

  4. randomnerdtutorials.com › solved-arduino-ide-esp32-esp8266-installation[SOLVED] Fix Arduino IDE ESP32 and ESP8266 Board Installation –...

    18 cze 2020 · If you’re having trouble compiling code for your ESP32 or ESP8266 boards using Arduino IDE due to an error downloading the boards’ URLs, you can follow this guide to help you fix the Arduino IDE installation on a Windows PC.

  5. github.com › esp8266 › ArduinoError Downloading from Board Manager #1787 - GitHub

    17 mar 2016 · I've just run into this too, specifically: Arduino IDE 1.6.9. added http://arduino.esp8266.com/stable/package_esp8266com_index.json to the additional board manager URLs in the preferences (along with the json for adafruit and sparkfun boards) tried to install 2.3.0 of esp8266 in the board manager.

  6. github.com › stm32duino › BoardManagerFilesError downloading the board manager package in Arduino IDE 1.8.19...

    8 sty 2019 · Hi there, Following the instructions I fail at the point of searching in the board manager for the stm32duino as the following error occurs: Error downloading https://github.com/stm32duino/BoardManagerFiles/raw/master/package_stmicroelec...

  7. arduino.stackexchange.com › questions › 63266library - Error Downloading http://downloads.arduino.cc/packages...

    7 kwi 2019 · I managed to update the library but getting error "Error Downloading http://downloads.arduino.cc/packages/packages_index.json" when updating the Board Manager. I switched the proxy to no proxy instead of automatic.