STM32F401RE is not getting recognised in my PC

rahul-adhithya · ‎2025-12-22

Hello Team,

I have a new STM32F401RE board along with the ST-Link.

I tried installing all the drivers required for the STM32 hardware, but the USB device itself is not getting recognised. Can you please help me resolve this issue?

Andrew Neil · ‎2025-12-22

Welcome to the forum.

Please see How to write your question to maximize your chances to find a solution for best results

@rahul-adhithya wrote:
I have a new STM32F401RE board along with the ST-Link.

What board, and what ST-Link, exactly ?

Is it a NUCLEO-F401RE board - with the built in ST-Link ?

Some more links on resolving ST-Link connection issues:

How to solve connection errors when connecting and programming the STM32 target board.

How to solve debugger connection issues

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

View solution in original post

mƎALLEm · ‎2025-12-22

Hello @rahul-adhithya and welcome to the ST community,

First, you need to check your USB cable. It should be a data cable and functional. Could you please check that cable with another device and check? or simply use another one.

Second, update your ST-LINK firmware using ST-LINK firmware upgrade tool from this link.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

Andrew Neil · ‎2025-12-22