![\"Solved](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/06\/Solved-fix-Arduino-IDE-installation-esp32-esp8266-nodemcu-board-addon-error-downloading-urls.jpg?resize=1200%2C675&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nIf you see a similar error in your Arduino IDE or any error related to downloading URLs, cleaning your Arduino IDE installation folder usually solves this issue.<\/p>\n\n\n
![\"Solved](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/06\/Solved-Arduino-IDE-Installation-Error-downloading-ESP32-ESP8266-NodeMCU-thumb-Copy.png?resize=873%2C709&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nIf your Arduino IDE doesn’t launch (you click the Arduino icon and nothing happens) this trick might also solve the issue.<\/p>\n\n\n\n
Fixing Arduino IDE Installation<\/h2>\n\n\n\n
1. In your Windows PC, open the File Explorer<\/strong>, select View<\/strong> menu and enable “Hidden items<\/strong>“:<\/p>\n\n\n 2. Go to your Windows device<\/strong> (for example C:), open Users <\/strong>and find the hidden AppData<\/strong> folder:<\/p>\n\n\n 3. Select the AppData<\/strong> folder and open Local<\/strong>.<\/p>\n\n\n 4. Open the Arduino15<\/strong> folder, then I recommend deleting all files in this folder.<\/p>\n\n\n 5. That’s it! Now, you just need to re-install the ESP32 and ESP8266 board add-ons.<\/p>\n\n\n Finally, you need to re-install the ESP board add-ons, you can either continue reading this guide or open one of the next links for more detailed instructions:<\/p>\n\n\n\n 1. In your Arduino IDE, go to File<\/strong> > Preferences<\/strong>.<\/p>\n\n\n 2. Enter the following URLs into the “Additional Board Manager URLs<\/strong>” field as shown in the figure below.<\/p>\n\n\n\n Then, click the “OK<\/strong>” button:<\/p>\n\n\n 3. Open the Boards Manager. Go to Tools <\/strong>> Board <\/strong>> Boards Manager\u2026<\/strong><\/p>\n\n\n 4. Search for\u00a0ESP32<\/strong>\u00a0and press the install button for the “ESP32 by Espressif Systems<\/strong>“:<\/p>\n\n\n 5. Search for ESP8266<\/strong> and press install button for the \u201cESP8266 by ESP8266 Community<\/strong>\u201c:<\/p>\n\n\n Plug the ESP32 or ESP8266 board to your computer. With your Arduino IDE open, follow these steps:<\/p>\n\n\n\n 1. Select your Board in Tools<\/strong> > Board<\/strong> menu (in my case it\u2019s the DOIT ESP32 DEVKIT V1<\/strong>)<\/p>\n\n\n 2. Select the Port (if you don\u2019t see the COM Port in your Arduino IDE, you need to install the CP210x USB to UART Bridge VCP Drivers<\/a>):<\/p>\n\n\n 3. Open the following example (or any other example) under File<\/strong> > Examples<\/strong> > WiFi (ESP32)<\/strong> > WiFiScan<\/strong><\/p>\n\n\n 4. A new sketch opens in your Arduino IDE:<\/p>\n\n\n 5. Press the Upload<\/strong> button in the Arduino IDE. Wait a few seconds while the code compiles and uploads to your board.<\/p>\n\n\n 6. If everything went as expected, you should see a \u201cDone uploading.<\/strong>\u201d message.<\/p>\n\n\n If you get the “Timed out waiting for packet header” error, follow this guide: [SOLVED] Failed to connect to ESP32: Timed out waiting for packet header<\/a>.<\/p>\n\n\n\n 7. Open the Arduino IDE Serial Monitor at a baud rate of 115200:<\/p>\n\n\n 8. Press the ESP on-board Enable<\/strong> button and you should see the networks available near your ESP32:<\/p>\n\n\n We hope this guide fixed your Arduino IDE installation. Now, you\u2019re ready to start building your IoT projects with the ESP32 and ESP8266 boards!<\/p>\n\n\n\n For more ESP32 troubleshooting tips, try our ESP32 Troubleshooting Guide<\/a>.<\/p>\n\n\n\n You might also like reading:<\/p>\n\n\n\n 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 … <\/p>\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/06\/Arduino-IDE-ESP32-ESP8266-NodeMCU-Board-Add-on-fix-install-1.png?resize=1095%2C563&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/06\/Arduino-IDE-ESP32-ESP8266-NodeMCU-Board-Add-on-fix-install-2.png?resize=1107%2C500&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/06\/Arduino-IDE-ESP32-ESP8266-NodeMCU-Board-Add-on-fix-install-3.png?resize=1107%2C500&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/06\/Arduino-IDE-ESP32-ESP8266-NodeMCU-Board-Add-on-fix-install-4.png?resize=1107%2C499&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2020\/06\/Arduino-IDE-ESP32-ESP8266-NodeMCU-Board-Add-on-fix-install-5.png?resize=935%2C501&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nInstalling ESP32 and ESP8266 Board Add-on in Arduino IDE<\/h2>\n\n\n\n
![\"Installing](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2016\/12\/arduino-ide-open-preferences.png?resize=196%2C340&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nhttps:\/\/raw.githubusercontent.com\/espressif\/arduino-esp32\/gh-pages\/package_esp32_index.json, http:\/\/arduino.esp8266.com\/stable\/package_esp8266com_index.json<\/code><\/pre>\n\n\n\n![\"\"](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2022\/04\/ESP32-URL-Arduino-IDE.png?resize=802%2C479&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Installing](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2018\/06\/boardsManager.png?resize=628%2C568&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2018\/06\/installing.png?resize=786%2C443&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Install](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2019\/07\/Install-ESP8266-Board-add-on-in-Arduino-IDE-search-ESP8266.png?w=1200&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nTesting the ESP32 and ESP8266 Board Add-on Installed in Arduino IDE<\/h2>\n\n\n\n
![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2016\/12\/windows-select-board.png?resize=614%2C520&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2018\/08\/com-port-selected.jpg?resize=687%2C438&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2016\/12\/windows-open-wifi-scan-example.png?resize=586%2C686&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2016\/12\/windows-wifi-scan-example-open.png?resize=827%2C719&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2016\/12\/arduino-ide-upload-button.png?resize=34%2C29&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Arduino](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2016\/12\/windows-arduino-ide-done-uploading.png?resize=671%2C388&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Open](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2016\/12\/mac-open-arduino-ide-serial-monitor.png?resize=38%2C29&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"ESP32](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2016\/12\/windows-arduino-ide-serial-monitor.png?resize=646%2C425&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nWrapping Up<\/h2>\n\n\n\n