ESP32 Forum

Could be anything. At the bare minimum, we'd need to know your OS and the hardware you're using this on. Please also post what you already tried yourself.

I am using windows 11

The following dev board is being used to program.

https://www.digikey.de/de/products/deta ... u0EALw_wcB.

I tried with multiple dev boards and the different microcontroller boards, just wrote a blinking code but the problem is the same.

I have attached the schematic and board 3D view.

You are trying to program the device via the serial port, but the connection to your board seems to be via JTAG. Either hook up the serial port, or use OpenOCD to upload via JTAG. (Also, with GPIO0 fixed to 0, your ESP32 will never boot from flash; you may want to look into that.)

That worked, thank you.