What can cause a SmartLog Pro® SE to not be located by the SLP Config program?

If the SmartLog Pro® SE units are not on the same subnet as the computer or server hosting the SLP Config software, that will cause this problem.

Windows Firewall settings can also block access to the testers. Updating the firewall settings or disabling the firewall can help.

If UDP or Port 17200 are not enabled it will cause this communication problem.

Another thing to note is that if your computer or server has two Ethernet cards connected and it defaults to using the card that is not in line with the testers, this can also create this problem. 
You will need to disable the 2nd card to be able to see the testers via the SLP Config program.