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I was developing my code at the LILYGO T-Display-S3 on my MacBook Air, when suddenly after I pressed the 'Upload' button, the console showed an error as below:

A fatal error occurred: Failed to connect to ESP32-C3: No serial data received.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html
Failed uploading: uploading error: exit status 2

And for Windows

Serial port COM10

There was nothing weird in my code. After this I tried to change cable, upload from my Windows, also changed port number, but the error stays... I'm not able to upload even an empty sketch now. Is something wrong with a connector? I'm able to get board information in Arduino's software and also see the device on the port.

*I'm able to upload code to my esp32, so I don't think that settings, or connection cable is wrong.

Here is a screenshot of the error:

error

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    COM10 is a serial port name for Windows. Serial ports have very different-looking names on macOS. So there’s something wrong in your settings somehow.
    – jcaron
    Jan 7 at 14:05
  • @jcaron screen above with COM10 and also error msg is from Windows. In Mac I'm getting another name
    – Marcel Kopera
    Jan 10 at 2:17
  • in Mac i got: A fatal error occurred: Failed to connect to ESP32-C3: No serial data received. For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html Failed uploading: uploading error: exit status 2
    – Marcel Kopera
    Jan 10 at 2:20
  • On Windows, check the Windows Device Manager to find the correct port (or to verify there is one: compare the list of devices when your board is connected or isn't). On macOS, check ls /dev/tty.* (likewise, with the board connected or not). What's the name of the port you use on macOS?
    – jcaron
    Jan 10 at 2:24
  • @jcaron on windows it is at 10, on Mac it is at tty.usbmodem1101
    – Marcel Kopera
    Jan 10 at 4:12

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