how to test map with friends

[DexterFstone]

Hi, I try to test my map with friends but he's can't join my host, what is the problem?

 

[Tasyen]

Difficult to say. With only that piece of information. I throw in some guesses.

check if the same versions of Warcraft 3 are used.
Your network settings might block the other PC (firewall etc).
If the Warcraft 3 version 1.31 is used make sure both have Bonjour installed and enabled.