please although i am in one room i cant join any channels every time i am trying to join other channels tell me that :
you have joined many channels ( too many channels are open )

while ma friend beside me is joining from his laptop and joining without problems in more than one channels so is there any thing i should set or edit in my pc settings ?

try change server, and try again.

we were on the same server also and in that server is ma own rooms i should join them

some servers have limit on how many channels you can join, and if you get a message that tells you that you are on to many, then all you can is:

1: try join all channels on another server.

2: part some channels to be able to join others.

If you friend can join the channels, and you are on the same server , then you can join the same amount of channels that he can.. type:

//echo -a -> I'm on: $chan(0) channels <- and see what you get for answer, then ask ur friend to do the same.

If you were on the same server, and your friend joined first. He might have covered the limit, as you two might have been seen as a duplicated client.

Test different servers.

What net you use? If it is UnderNet, I recommend /server Zagreb.HR.Eu.UnderNet.org

That doesn't look like a default server-side message. Try doing the /!remote off, then /!join channel.

You know it isn't a mIRC issue when you can try another network and join more than 1 channel.

You know it isn't a mIRC issue when you go on java applet on the same network and can join more than 1 channel.

Matter fact, scroll in your status window and look for an all-capital maxchannels=<Number>. And tell us the number. If it is 1, then it isn't a mIRC problem.

-Neal.