After trying to launch policy server, it doesn't start and that error message is thrown in policy server log:
Failed to initialize UDP server socket on port: 44444.
"Socket Error 10048" occurs because the specified address is already in Use. Before starting the policy server, determine the process/service that is using port 44444 and terminate them:
# "netstat -an | findstr 44444" on Windows systems
Then terminate the processes holding sockets:
# Using the Task Manager, locate the process "smpolicysrv.exe" and terminate it on Windows systems.
Once done, re-run the previous netstat command. Netstat should return no line. That means you can start the Policy Server. The error in the smps.log will disappear.