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dqsh06
Senior
May 22, 2026
Solved

nothing changed, but stlink-debugger cannot use now

  • May 22, 2026
  • 2 replies
  • 87 views

Hello, 

I wrote a project maybe 2 weeks ago, at that time, everything was ok.  then i used stlink to download and debug the code yesterday, at first time, it worked ok, but later, i did download and debug again with stlink. it cannot work. the log as below.

dqsh06_0-1779438256201.png

my setting as below:

dqsh06_1-1779438368562.png

so what is the problem? how to fix it?

thanks.

 

Best answer by LaurentL

Hello dqsh06,

Can you check that there is no ST-LINK_gdbserver.exe running with task manager ?

Maybe a previous debug did not finish well.

If it is the case, kill the process and it should be fine.

Rgds,

Laurent

2 replies

Andrew Neil
Andrew Neil
Super User
May 22, 2026

Clearly, something must have changed!

;)

 

This is probably the key:

AndrewNeil_0-1779438724089.png

See: Failed to bind to port 61234

 

(note that it's better to share this as text rather than a screenshot)

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.
LaurentL
LaurentLAnswer
ST Employee
May 22, 2026

Hello dqsh06,

Can you check that there is no ST-LINK_gdbserver.exe running with task manager ?

Maybe a previous debug did not finish well.

If it is the case, kill the process and it should be fine.

Rgds,

Laurent

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
    Andrew Neil
    Super User
    May 22, 2026
    @LaurentL wrote:

    Maybe a previous debug did not finish well.

    If it is the case, kill the process and it should be fine.

    That is, indeed, the solution proposed in the thread I linked earlier.

    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.
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