If you have a message "Port unavailable" in Scheduler, then some other application must be running and using this port. If you want to check which process is using your port, please, run following command from command window (CMD.exe):

netstat -ano > 1.txt

You'll get 1.txt text file in current directory. Open it with Notepad, you should find a line with your port number, e.g. if I want to find which process is using port :80 :


Active Connections

Proto Local Address Foreign Address State PID
..................................................................................................................................................................
..................................................................................................................................................................
..................................................................................................................................................................

TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 1564
..................................................................................................................................................................
..................................................................................................................................................................
..................................................................................................................................................................


Remember PID number (e.g., for me it is 1564), then run following command:

tasklist > 2.txt

You'll get 2.txt text file in current directory. Open it with Notepad. Find a line with PID from the first file (for me it was 1564).


Image Name PID Session Name Session# Mem Usage
========================= ======== ================ =========== ============
System Idle Process 0 Services 0 24 K
..................................................................................................................................................................
..................................................................................................................................................................
..................................................................................................................................................................

httpd.exe 1564 Services 0 11,520 K

..................................................................................................................................................................
..................................................................................................................................................................
..................................................................................................................................................................

So I found that on my computer port :80 is opened with httpd.exe process.