CubeIDE 1.18 cannot detect ST-Link anymore

[funky]

Hi,

starting with Update 1.18  (update from 1.17) sth. broke and i cannot debug anymore.
I tried a nucleo Board with integrated St-Link and an ST-Link V3. All Screenshots were done with the v3 St-Link
I reinstalled CubeIDE already from the complete download-package, but still the same problem

i always get

But the update works ( so my st-link is found)

I can flash my image via st-link utility without problems.

but cannot get debug to work with 1.18.

With v1.17 i had no problems at all and debugging worked flawlessly.

So what can i do to fix this?

i tried with stlink-v3 and v2.1

and i use Windows 11 Enterprise
Regards

[Andrew Neil]

---

@funky wrote:

I can flash my image via st-link utility without problems.

---

What about CubeProgrammer?

[funky]

did not use it until now but will check

[funky]

hmmm...interesting. cubeprogrammer does not detect my st-link?!

[funky]

this is what my device manager shows me. it is an st-link v3 but with the nucleo st-link v2 it is also not working :(

in the cubeprogrammer: when i try to upgrade my st-link it wants to downgrade the firmware.
this is the version i get via cubeprogrammer

and via stm32cubeide

 

[funky]

afte rebooting i see my st-link in the cubeide programmer. but as soon as i click on it it disappears and refreshing etc does not bring it back. i tried to reinstall all the drivers, but this did not help. in cubeprogrammer and cubeIDE the st-link is not usable. with the st-link utility i can still flash.

but all in all debugging is not working anymore. i'm lost here

[funky]

i downgrade to cubeIDE 1.17. Also not working anymore :(

[funky]

still no luck. 

what i noticed: cubeIDE does not even try to start GDBServer. it performas a prelaunch check and then the message box with "No St-Link connected..." appears

[Andrew Neil]

Well, that makes sense - if it can't find any ST-Link, then there's no point in it starting a GDB server.

 

You haven't got anything else using the ST-Link at the same time, have you?

[funky]

nope, nothing. 

And as said...in the debugging configuration the IDE detects my st-link. But it is not usable when i want to debug.

I'm out of ideas

I downgraded the IDE, uninstalled all (old) drivers/devices in the device manager, nothing helps 

[funky]

No, the whole gdb-server start output was missing

I did not see the whole startup output. As soon as i pressed the debug button the message box with the missing st-link notice appeared and none of the gdb server output

i don't know what triggered my firewall to behave like this. Because i'm pretty sure when i first installed cubeIDE in the past i did not hit any extra checkboxes in the firewall configuration. 
And my colleagues who also use cubeIDE 1.18 did not have these problems and everything worked flawlessly after the update

[funky]

ok, i'm starting to cry. monday morning in the office. same problem again.

no st-link found, no gdbserver started.  (on friday i was at home so little different network setup)

[Andrew Neil]

---

@funky wrote:

ok, i'm starting to cry. monday morning in the office. same problem again.

---

So have you re-checked the firewall settings?

[funky]

ok... it seems the autostart of the gdb server does not work anymore. i absolutley do not know why.

in the debugger configuration there is the "show command line" button for the gdb server start. if i copy that command and start it manually via commandline i get another firewall popup for my gdb server, i accept that and my gdb server is started and listening for connection. when i configure my settings to connect to a remote gdb server with that port everthing works fine i can start my program and debug.

when i switch back to autostart local gdb server, nothing is started i get the no st-link connected message instantly

[funky]

after starting that gdb server manually it worked one time and now i switched back to automatic start and i get after reboot this logoutput ONCE

 

STMicroelectronics ST-LINK GDB server. Version 7.10.0

Copyright (c) 2025, STMicroelectronics. All rights reserved.



Starting server with the following options:

Persistent Mode : Disabled

LogFile Name :...\st-link_gdbserver_log.txt

Logging Level : 31

Listen Port Number : 6124

Status Refresh Delay : 15s

Verbose Mode : Enabled

SWD Debug : Enabled

ST-Link enumeration failed

Error in initializing ST-LINK device.

Reason: ST-LINK DLL error.

and the next try the "NO ST-Link detected" message box is back again.

this is *^°?!#111 :D

[AScha.3]

Hi,

so : > 

Reason: ST-LINK DLL error.

 

Just try:

close IDE ; 

load/install (actual) STM32CubeProgrammer , check connection to board (maybe : update st-link);

then try IDE again.