Had same problem - using BRIDGE mode solved my problem
 

Dear All -

I spent hours trying to fix the exact same problem on my MacBook:

DSL Modem - Hub - Wall Socket - Ethernet cable works just fine
Airport Express merrily flashing green once plugged into the same wall socket, yet no connection over wi-fi (all green except Internet and Server, yellow then red)
Plugging Express directly to the Modem bypassing the hub had no effect.

Now I am no expert but I figured the word BRIDGE sounded just right - all I needed is for the Express to act like a cordless ethernet extension cable.
So changing to Connection Sharing: Off (Bridge Mode) worked like a charm.

Now, I was concerned that now that the words "Sharing" and "Off" were in teh same sentence I could only connect one wireless device at a time (sorry if I am saying something profoundly dumb right now) - but I have two MacBooks downloading updates simultaneously as I write this now - without any problems< and the Summary Page shows Wireless Clients: 2

Now, this sounds way too easy - could someone please tell me what exactly it is that I am NOT GETTING with this seemingly easy way out? Mail works fine, too. What's with this "base station NOT sharing a single IP with wireless clients using DHCP..." and acting like a bridge only?

Please clarify - the only other thing I would use this for which I haven't tested is SIP VoIP with my Nokia E51.

Tanks again - and pardon the my language (literally :) - I could do better in Russian :)

I am new here and not very computer savy. I have had my Mac for a couple years and love it. I got an airport express and hooked it up and it worked perfectly.I had internet through a cable modem. Well I moved and had to get a new cable modem through a different company. And I can't get my airport express to work now. My problem sounds like Pdiddle's problem. My first question is do I HAVE to have a static IP address? I called my internet company and they said they don't give them unless I have a business account and that I can get one assigned by the provider of my airport express which I guess means MAC. That confused the heck out of me. So before I ask any more can someone clarify the static IP thing for me? Thanks so much.

airport express network diagnostics
 

I have a brand new AE & MacBook. I CAN connect but must run through network diagnostics each time opening Safari. After screen of "cannot connect to internet," I am required to:

1)choose apple network
2)enter network password

Is this a security setting or malfunction?

THANX!

[QUOTE=Slavsta;455499]

Now I am no expert but I figured the word BRIDGE sounded just right - all I needed is for the Express to act like a cordless ethernet extension cable.
So changing to Connection Sharing: Off (Bridge Mode) worked like a charm.


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This totally worked for me as well. Ipod touch and laptop 'saw' the airport express but would not connect to the internet. Happened all of a sudden after years of proper connection. Frustrating. But all it took was changing to Connection Sharing: Off (Bridge Mode) using Airport Utility.

Thanks Slavasta! You saved me a big headache.