Fixing Error Message in Console Area

Hi all,

Please, how can I fix this error displaying on the console message area?

"Error downloading"


@mashuaibu, your topic has been moved to a more suitable location on the forum. Introductory Tutorials is for tutorials that e.g. you write, not for questions. Feel free to write a tutorial once you have solved your problem :wink:

Are you in a corporate environment where applications might be blocked from accessing the internet?
Can you access it from a web browser?

Hi, Thanks for the information.

I am working remotely from home and do have unrestricted access to the internet. No, I can't access it from my web browser.

you probably want to use

read GitHub - espressif/arduino-esp32: Arduino core for the ESP32

Hi @J-M-L I am no longer working with ESP32. I am currently working with ATMega32u4 board. Thanks!

I just want to remove the message from appearing on my message area.

delete that link from your preferences panel custom boards

@J-M-L @sterretje Thanks for your support.

It's all done and working alright

perfect. Have fun.

Hi @J-M-L and @sterretje Please, I am still seeing this error after removing the previous one in the preferences menu.

error downloading

How can I deal with it? Thanks

@J-M-L and @sterretje Again, I am having errors compiling this sketch exmple:

void setup ()
  int counter;
  for (counter = 0; counter < 14; counter++) {
    Serial.print("The counter value is ");
  Serial.println("This is the end of the loop");
void loop () {

It's asking for the redefinition of 'void setup()'

Any support is much appreciated.


you likely have two .ino with setup() and loop() in the same directory

each sketch needs to be isolated in its own directory (which has the name of the main ino file)