Can not start debug session STM32CubeIDE (ST-Link, Nucleo-F767ZI)

NikolaiB · ‎2026-01-04

Hello all,

I get an error starting a debug session from STM32CubeIDE (1.18.1) (STM32 Nucleo-F767ZI):

STMicroelectronics ST-LINK GDB server. Version 7.10.0

Starting server with the following options:

Persistent Mode : Disabled

Logging Level : 1

Listen Port Number : 61234

Status Refresh Delay : 15s

Verbose Mode : Disabled

SWD Debug : Enabled

InitWhile : Enabled

Target USB comms error

Error in initializing ST-LINK device.

Reason: USB communication error. Please reconnect the ST-LINK USB cable and try again.

If I switch to SEGGER J-Link everythink works fine.

Is my debug configuration:

What I tried:
- Restart PC
- Reinstall the USB-Driver (https://www.st.com/en/development-tools/stsw-link009.html)
- Erased the flash with STM32CubeProgrammer
- Changes USB cable
- Googled for solutions

Please help

Best regards

Nikolai

NikolaiB · ‎2026-01-05

Im am not familiar with option bytes. I can provide my configuration. But I did not change anything. I just generate the code in CubeMX for the NUCLEO-F767ZI and start the project with CubeIDE. Build and Debug. Thats all.

NikolaiB · ‎2026-01-05

I just ordered a new Nuceo-Dev-Board to exclude any hardware issues. Will take a week to arrive.