So, I am learning stm32 mcus, using a nucleo f4 board.
Everything was working fine and now debug launch fails.
Actually, I was doing one debug, closed it and next debug session won't launch.
It starts debug on Linux or on Windows with OpenOCD, but ST-Link GDB debug fails (gdb does work on linux).
This is the error message:
Already did allow the stlink server in the windows firewall.
Avast antivirus was deleting the STLINK server exe file, added an exception and it works.