TCP error code 10048: Only one usage of each socket address (protocol/network address/port) is normally permitted

Hi,

We are getting below error only from one client machine while all the other client machines are not throwing any errors. Why is this error only coming from one client machine and what is the fix for it.

Could not connect to net.tcp://XXXXXX:809/YYYYYY.svc. The connection attempt lasted for a time span of 00:00:00. TCP error code 10048: Only one usage of each socket address (protocol/network address/port) is normally permitted XX.XX.XX.XXX:809. . This message has been processed.

Thanks in advance.