Unable to connect to Internet via Airport Express - 'cannot contact server'

I'm unable to connect to the internet via my Airport Express. I'm using OS 10.3.9, and had the same setup with no problems at a previous address, but with a different modem from the same ISP.
My AE is connected - the light is green - and my mac is connected to the network in Internet Connect. But when I open Safari I get an 'unable to contact server' message.
I've tried rebooting everything (modem, AE, Mac), and leaving modem/AE off for several minutes. Also reset the AE, but to no avail.
The connection works fine via Ethernet cable.
Any ideas?

Thanks, I checked out that advice doc (106798), but could not connect to the address (http://17.149.160.49) which is given to test if it's a DNS issue. My ISP says I shouldn't need DNS settings.
The service is PPPoE, and I went into Airport Admin Utility to check if the Airport was configured for this. Under Configure/Internet, I found it was set to 'Ethernet', so changed it to PPPoE. Then when I restarted I got connection status in the bar (and good Airport signal), but status flipped between 'looking for PPPoE host' and 'negotiating PPPoE host', sometimes sticking on one or the other each time I tried rebooting all gear.
Any other ideas?

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Unable to connect to internet via the proxy - Proxy set up OEM 12c

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Enabling Oracle Management Service to Access My Oracle Support
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Canny connect to internet with airport express

I was connected to internet with wireless network using airport xpress and D-link DSL-300T cable modemeverything was fine till i did base station fireware update. Now i can only connect wired with usb modem, (my airtunes still works). Airport status is green and states i am connected to internet via ethernet _though safria is unable to find server. Have tried loads of things but to no success. Tried network assist but network password invalid? though it is correct! Also done hard reset on xpress no joy.
Any mac guru s fancy a challenge!?
Pls.

Likely your ISP uses the PPPoE protocol to connect to clients - and PPPoE doesn't work properly with firmware version 6.2 for the Airport Express.
Downgrade the firmware on your Airport Express back to version 6.1.1 with this software:
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Hello mnkyby. Welcome to the Apple Discussions!
It sounds like your AirPort Express Base Station (AX) in not getting a proper IP address from your modem.
Try this ...
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o Go to the Internet tab.
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o Is the IP address what you would expect from your ISP or is it something like: 196.254.x.x?
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Modem/Router Power Recycling - Quick
o Power-off the DSL/Cable modem, AX, & computer(s); Wait at least 5 minutes.
o Power-on the DSL/Cable modem; Wait at least 5 minutes.
o Power-on the AX; Wait at least 5 minutes.
o Power-on the computer(s)
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Modem/Router Power ReCycling - Full
o Power-off the DSL/Cable modem, AX, & computer(s). (Wait at least 30 minutes. If possible, leave the modem off overnight.)
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Network prefs: "connected to internet via airport"... but can't go online??

I've got steady green lights on my airport express and modem/router; and in Network Preferences it says that I am connected to the internet via Airport (green light here too). BUT, I can't get online with any of my browsers or my mail client. What's going on here? Help appreciated.
Thanks
eMac 1GHz, iBook 14" 1.33GHz Mac OS X (10.4.8)

If you have a Modem Router combined and an Airport Express
The Express must be set up to NOT DISTRIBUTE IP's.
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If you are using all Apple Airport products the confiquration is pretty straight forward.
If you are using 3rd party products then the set up can be a little different.
From what you say in your post you are using 2 routers, my quess is the Express is set up to distribute IP's and if your other router is set up this way then thats your problem.
Don

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CONNECTED!! After resetting the modem, llike you suggested, I am able to get the wireless network back up and running, BUT...I am still having problems with one base station not showing the "music" tab and thus not letting me stream music to it. When I hit "configure" the tab shows for a quick second then disappears. Any idea?

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OK but, like you, my other machines (PowerPC iMac and Power Book) did seem to work OK while the new iMac was playing-up. It was only when I noticed that the Old iMac had not downloaded some podcasts that I started to look at the router. I now remember having a similar problem a few years ago - frequent failure to automatically log-in to the router, occasional failure of manual log-ins and slow/unreliable connection once logged-in. A new router fixed the problem. It's a real pain but there you are. Must remember to keep receipt of current router and kick-up a fuss if it fails within the guarantee period.
Sorry if this doesn't help but I thought it worthwhile posting my experience over the last 2 days.
Have you tried connecting to your router by ethernet?
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Trouble connecting to internet via airport

i can't connect to the internet via airport. Does anyone know what the problem may be?

There are several items that may be behind this issue.
So troubleshooting them by trial and error is most likely
a way to attempt to resolve the cause, especially with
an older OS X and hardware, while trying to connect to
a newer base station and different newer frequency...
•Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT4628
The above covers several areas of settings and ideas.
If the computer has been online, and now does not work
wirelessly, that may be a matter of an accidental change
in settings; or something turned off that used to be on.
A general overview, w/ examples of settings similar to the above, for 10.3.9/10.4.11 appears here: http://www.tr.txstate.edu/get-connected/computerservices/wireless/encrypted/maco sx-wpa2.html
Is you computer running OS X 10.3.9 Panther? If so,
your built-in AirPort card may be an 802.11b version
and the security protocol would not work with a newer
or modern wi-fi base station (WEP, WPA) unless those
settings were changed. You can turn off security if the
computer is too old to be able to connect with the old
settings for that protocol. Also, a later wireless base
station may not see an old wi-fi card using 802.11/b.
So it is a matter of knowing what you have on either side
of the connection issue; the base station and the wi-fi
card have to use the same frequency and security. Or
there are work-arounds to attempt to correct this matter.
Hopefully you can connect and use the wi-fi internet.
Good luck & happy computing!

Unable to access internet via Airport Express

Hi. I'm have trouble connecting to the internet using my Airport Express.
When I plug in my DSL modem to the unit, I get the solid green light. My Macbook is able to connect to the airport, and to other computers on the same Airport.
However, none of my computers are able to reach any internet sites. They were even unable to directly ping a remote IP address. However, if I plug my DSL modem directly into my Macbook, bypassing the Airport, it correctly connects to the internet, which leads me to believe the problem is with my Airport.
A couple of oddities which I don't know if they are normal. First, in my MacBook's network prefs, the DNS box is blank. However, I'm connected via DHCP, so I didn't know if that'd matter. In the airport configuration app, under internet, it's also using DHCP, but the box is empty, with the same address as the router (192.168.1.1) greyed out next to it. The IP address is 192.168.1.5. This number is rather different than when I connect to my DSL router directly on my MacBook.
I'm running what I believe to be the newest firmware (6.3).
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Thanks,
Nathaniel

Hi,
I solved the problem using the airport express firmware 6.1.1. and erasing all favourites networks in network pref panel to create new ones. You may also check the keychains utility (applications -> utilities). If there is several times the same pass, just keep the latest and erase the others.
Hope my english is understandable...

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I have an iMac that is directly wired to an airport base station and a G4 powerbook that connects via a card. Neither can connect to the internet. The iMac is set up as follows:
Cable modem > ethernet cable to WAN port on AEBS > ethernet cable from AEBS to iMac.
The powerbook detects the base station and created its own network as soon as it did, yet still nothing. The first and third lights on the AEBS flash as to show activity and I have unplugged the modem to reset it multiple times.
I am completely confused as to what is going on. Can anyone please help?

If it helps any, I'm in the same boat. I've had an AEBS that has worked well until yesterday. Now, my Powerbook can't connect to the internet via wireless or ethernet (connected directly to the AEBS). My POwerbook CAN talk to my networked HD. To make things worse, my two Tivos (connected to the network via an Airport Express & WDS) CAN connect to the internet.
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Can no longer connect to internet via airport

My roommate and I have wireless internet. I used it all last semester with no problems. Sometime in December, I was unable to access the internet (Firefox, Safari, tried both..) here in my apartment, even though Internet Connection shows a full signal under our Airport network. When I went home, wireless worked just fine on this laptop - same when I'm at a library with wireless.
I've tried restarting the wireless router, no success. I'm only able to access the internet when I'm plugged in directly to the router.
Any suggestions?

Um it's an AT&T DSL wireless router. Yes, my room mate uses the wireless. On my computer in the top right by the airport signal, when you click it, our network is shown with a check next to it, so it must be the signal from our router.
There's an IP address when I unplug my computer from the router (when the web pages cannot be displayed), but when I plug it back in to use the internet, there isn't an IP address - just an IPv6 address.

Can't connect to Internet via Airport

I have a PPPOE ISP account. Before upgrade to Lepoard, just fine. Now I can only connect to internet using cable via my router moderm. I cannot connect my wireless router.
The wireless router will appear to be connected but it said self assigned IP. If I hardcode an IP eg. 192.168.11.2 to it. The Airport status will become connected but still cannot dial into my PPPOE account. An message no PPPOE service will appear. But if I plug in the LAN cable, everything work fine. Why this happen? My wireless router work fine with my Window XP and my Mac (before upgrade to Lepoard) What configuration should I change? I am an idot to networking. I have download all patch and has tried boot to safe mode etc.
Anyone can help?

By power downs do you mean Sleep?
One thing that might work is to set the IP to Static in Network>Configure IPv4>DHCP with Manual Address.

Unable to connect to Internet via Airport Express - 'cannot contact server'

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