Error in initializing ST-LINK device. Reason: No device found on target

[StanCosgrove]

Hello i encountered this error on F072 nucleo board, it was working fine yesterday and todayit couldnt connect up to STM IDE, whats coursing this and how to overcome this issue?

Error in initializing ST-LINK device. Reason: No device found on target

[Andrew Neil]

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@StanCosgrove wrote:

it was working fine yesterday and today it couldn't connect

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What did you change between yesterday & today - hardware and/or software ?

[StanCosgrove]

Nothing...full error as below, anyone can help?

Error in final launch sequence:

Failed to start GDB server
Failed to start GDB server
Error in initializing ST-LINK device.
Reason: (4) No device found on target.

[Andrew Neil]

Nothing at all - no changes to your code? No links fallen off?

 

Does the ST-Link appear in the Windows Device Manager (or equivalent on other platforms) ?

 

Does any of this help: https://community.st.com/t5/stm32-mcus/how-to-solve-debugger-connection-issues/ta-p/49693 ?