What does this error mean?

  • one
    Only not "error", but "exception". - Nofate ♦
  • one
    give better code where the exception occurred. So it's easier to understand the error. - IntegralAL

1 answer 1

This means that on the port that you were trying to start listening to, someone from the local applications is already hanging. You can find out who exactly, for example, Microsoft's TCPView utility.

  • one
    more netstat -a - Yura Ivanov