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DWest.1
DWest.1
Associate
July 15, 2020
Solved

ST-LINK not listed Device Manager

  • July 15, 2020
  • 2 replies
  • 1400 views

I have a NUCELO-L433RC-P dev board that was working fine for several days but is no longer visible in Win 10 Device Manager. STLinkUpgrade and STM32CubeProgrammer do not find my ST-LINK. STM32CubeIDE gives the error "Error in initializing ST-LINK device. Reason: ST-LINK DLL error."

Connecting the dev board to a second pc, and everything appears normal. I did a full chip erase from STM32CubeProgrammer without issue.

Back on my primary PC, I checked the Win10 Restore Points and found no changes in the past 7 days. I tried multiple cables and multiple USB ports with no change.

When I plug the dev board into my primary PC, the LD1 light slow blinks red. If I unplug and re-plug a few times, I can get LD1 to fast blink red but the ST-LINK never mounts. While plugging/unplugging the USB, Windows10 never makes the "beep boop" sounds that it should when connecting USB devices.

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Best answer by TDK

Do other devices work on that port? Did you reboot? Try using a different cable? Try using a different port?

2 replies

TDK
TDKBest answer
July 15, 2020

Do other devices work on that port? Did you reboot? Try using a different cable? Try using a different port?

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DWest.1
DWest.1Author
Associate
July 15, 2020

Amazingly enough. A PC restart is exactly what I needed. Thanks.

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