Hi, i am using stm32IDE if i entering into debug mode getting this error please help me to crack this. Failed to bind to port 61234, error code -1: No error Failure starting GDB server: TCP port 61234 not available.

After searching for the problem on my PC's side, I ran out of ideas. It had to be some error on the MCU side. What solved it for me was putting the MCU into update mode (in CubeIDE > Help > ST-LINK Upgrade) and even though the latest version was programmed already, I updated it again which probably caused the right kind of reset on the MCU and it worked fine after.

Just use Sysinternals TCPView (or similar tool), find the port in the list and 'Close Connection'.

Try programming again.

pkill gdb solved it for me