Airport has a self assigned IP address. Why and how can I fix it

Airport has a self assigned IP address and can't connect to the internet. Why and how can I fix it?

First thing you need I think is to get your iMac connected to the Internet.
Shut down your iMac and you iPad. Then power off your router. Wait 30 seconds and power up the router.
After the router indicates that it is connected to the Internet then start up your iMac and see if it connects. If the iMac connects to the Internet then your iPad should too.
If this power up sequence doesn't work you'll have to dig into the router setup to make sure it is working properly.

Similar Messages

  • "Airport has a self assigned IP address & cannot connect to internet"

    Hi, I'd appreciate any insight at all on this...
    Apologies in advance for this vast post...!
    (but I guess I may as well mention everything I've already tried...)
    BACKGROUND:
    I was recently trying to add an Airport Express Base Station to an existing ethernet and wireless network, which has been working flawlessly for 3 years.
    (Network consists of an ethernet-connected G4 Dual 1.42 desktop running OS X.3.3, and two wireless-connected iBooks- one a 12" running OS X.3.5, the other a 14" on OS X.4.2).
    For various reasons, I've now given up with the Airport Express, but ...
    PROBLEM:
    On the wireless 12" iBook- "Safari can't open the page "xxx" because it can't find the server "xxx"- ie, the internet connection is now wonky.(The problem is the same in Firefox, IE, and Camino too).
    The fault must be with configuration on this laptop, as the other two machines on this network are still running and connecting normally with no problems at all.
    What is the cause of this problem? (IP addresses? DNS server?)
    WHAT I'VE TRIED SO FAR:
    1. First looked at System Preferences --> Network --> Network Status, where I see this;
    "Airport is connected to the network "Fritz!Box SL WLAN". Airport has a self-assigned IP address and may not be able to connect to the Internet."
    Alongside it an amber button (which is usually green).
    Then according to JohnHuber1's suggestion in Discussions on May 3rd 2006;
    "Go to System Preferences --> Network and double click on Airport to open its preferences. Click on theTCP/IP tab and select Configure IvP4: "Using DHCP" and click on Apply Changes to save it."
    I tried toggling this (it was already set this way), and then Restarted, but it hasn't helped.
    I also tried clicking the 'Renew DHCP lease' button. Also hasn't helped.
    2. Repaired permissions. It hasn't helped.
    3. Read Apple KB article No:106798- 'Troubleshooting "Server could not be found" messages'.
    From this article, it seems that
    a) The problem cannot be caused by "an actual loss of internet connection", as the other 2 machines are still connecting fine.
    b) Typing http://17.254.0.91 instead of http://www.apple.com makes no difference, therefore it doesn't APPEAR to be a DNS server problem. (?)
    4. Tried to reconfigure the Airport settings using Network SetUp Assistant.
    This allows me to select Airport as my connection method, select the network from the list; but once I've entered the network password and pressed 'continue', it then gives me a dialogue box, saying
    "Unable to establish a network connection. Your computer could not connect to the internet. Click OK to go back and change your network settings and try again".
    Returning to Network Prefs, I now see a box saying "Your Network Settings have been changed by another application".
    I can't seem to get out of that vicious circle.
    5. Opened a fresh Test Account, behaviour is the same here as in the regular user account.
    6. Opened Network Utility, tried to 'Ping' on 17.254.0.91 (Apple site). Then tried to Ping my network router (192.168.178.1), and then also the other 2 computers on the network. Result in each case was "10 packets transmitted, 0 packets received, 100% packet loss".
    What can I do to fix this problem? I suspect it's some small configuration checkbox in Network preferences which I've inadvertently altered.
    But have I got any idea what I've done...?
    Sorry for the epic post. But you get the idea...!
    Thanks for your thoughts...
    G4 Dual 1.42, FW800, 2GB RAM, (OSX.3.3), iBook G4 (1.2ghz, 1GB RAM, OSX.3.5)   Mac OS X (10.3.3)   3 int.HDs, 3 Lacie ext.HDs, Logic Pro 6.4, RME Fireface 800.

    Hi Grant, thanks for jumping in...
    Have you removed the troublesome Airport Express?
    Certainly have, that was Step 1 several days ago!
    Are you using encryption?
    Yes, I have to enter a password every time I've tried to use Network Set Up Assistant. I'm pretty sure I've got it right- it won't accept anything else.
    Have you limited your network to only certain M.A.C. Addresses?
    Not as far as I'm aware. Could I have done it inadvertently?
    Is the Wireless Router set to allow the connection of slower 802.11b devices like the iBook?
    Guess it must be... it worked fine before, and is still ok with the other 14" iBook.
    Are you connecting to a Wireless Router and not to another Macintosh computer?
    Hmm... I ASSUMED I was connecting to the WLAN router. The G4 desktop has no wireless capability itself, could I still be connecting to that regardless?
    Internet access has never been affected in the past by that machine being on or off...
    You will not be able to get anywhere until you have an IP address in the same subnet as your Router
    (generally high octets the same, last octet different). Can you think of any reason why your Router
    should not give you an IP address in this range?
    Err... now I'm lost, sorry! What's an octet?
    I really appreciate you taking the time to help me out Grant... sorry I'm not really up to speed!
    Cheers, Andy.

  • I getting airport has a self-assigned ip address and may not be able to connect to the internet

    I getting airport has a self-assigned ip address and may not be able to connect to the internet

    I have got exactly the same message after we re-configured our router. I was connecting using my iMac wirelessly before hand, but now cannot. Our other PCs can connect wirelessly to the router so it's not the router. I have also tried the firewall solution but that doesn't work either.
    I did call Apple Support who said that a full troubleshoot would cost £35 as my computer is older than 90 days (well yes it's been working fine that's why it's over 90 days old, it's only now that it isn't!). He said a trouble shoot didn't guarantee success so I declined his offer to charge me an extortionate amount of money for nothing! He did say that the router needs to be giving the Airport an IP address, but it isn't doing it now. His only suggestion was to turn off the router and turn it back on or power down the iMac. Neither of which help.
    Anyone else had any success?

  • My ipad recognizes my home network but will not connect to the internet. When I click on AirPort/preferences at the top of the imac screen it says..."AirPort has a self-assigned ip address and may not connect to the internet".How can I change ip address?

    My ipad recognizes my home network but will not connect to the internet. When I click on AirPort/preferences at the top of the imac screen it says..."AirPort has a self-assigned ip address and may not connect to the internet". If this is the root of the problem,how can I change ip address?
    Ipad will connect no problem to other networks.

    First thing you need I think is to get your iMac connected to the Internet.
    Shut down your iMac and you iPad. Then power off your router. Wait 30 seconds and power up the router.
    After the router indicates that it is connected to the Internet then start up your iMac and see if it connects. If the iMac connects to the Internet then your iPad should too.
    If this power up sequence doesn't work you'll have to dig into the router setup to make sure it is working properly.

  • Cannot connect to internet as Airport "has a self assigned IP address"?

    I suddenly cannot connet to wireless internet as the Airport has a "self assigned IP address" whatever that is. I have tried removing other wireless connectons but it makes no difference. I'm trying to use the wireless connection at the hotel I'm stying in..its working fine on this computer. Any suggestions ...PLEASE?
    Thanks

    Hmmm... well, not what I was hoping to find b/c that is not really a helpful answer, l.b, but thanks for joining in on the discussion. I too just experienced the same problem. Yesterday I was connected just fine, a little slow, but connecting just the same. I was able to do my banking, browsing & what have ya. Today I get up and have no internet connection and my computer says it Airport has self-assigned an ip address and I cannot connect to the Internet. I haven't done anything different and as I can tell, they haven't done anything different either. My iMAC will not connect, but this piece of poop del mini will as will my iphone4 and all three of my kids' ipod touches. Soooo.... anyone else have a solution b/c I am totally at a loss here. I really need my iMac to connect. Got things to do that I can't do on here.

  • Connectivity Issue: "Airport has a self-assigned ip address..."

    I've been using the same wireless network via AT&T with their own wireless modem/router that they provided for the past six months. Never had an issue EVER. Now....suddenly, it says "Airport has a self-assigned ip address and may not be able to connect to the internet."
    OK. I jumped on my girlfriends IBM, it and all the other PC computers in our house work FINE. I can also directly connect to the router via an ethernet cable and connect FINE.
    So I open up the router settings in my browser and notice that the IP address the router says my computer has is 192.168.1.100. This is not the IP address my network settings displays when I get a DHCP lease. So... I select "manually" instead of "automatically via DHCP" and type in the IP address the router seems to think my computer is. Now in the "show network status window" it says that "Airport is connected to the network" but I still can't connect to the internet.
    This is driving me completely bat **** crazy. Nothing has been changed in the wireless settings on my computer, any other computer in the house, or the router itself. This seems to have happened randomly, after searching all over the internet I can't find any solution that works for me. anyone know what's up?

    As you may have gathered, this message appears when the computer has failed to obtain an IP number from the router using DHCP, so it self-assigns a fallback number which, since the router doesn't know it, prevents connection to the internet.
    The obvious first step is to turn everything off, and then boot the router and each of the computers, one at a time, so that each should get a new DHCP lease. All the IP numbers should be issued and obtained automatically.
    This thread offers some solutions, some of which have worked for some posters:
    http://discussions.apple.com/thread.jspa?threadID=1417058&tstart=0

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    AdaS_VZW,
    I'm not sure if the area has been surveyed; it's a large group of apartment buildings about a within a couple miles of Dulles International Airport in Northern Virginia, so I would imagine that it probably has, but I'm not sure. How would I find out?
    I understand that the Network Extender does not support LTE connections (I know there are two models, the 1x-only and 3g, both made by Samsung - I have the 3g model, SCS-2U01). I know that it can support a 3G data connection, but that should be irrelevant - I'm always connected to my wifi network in my apartment.
    What's particularly vexing, however, is that both a Galaxy S4 and Galaxy Nexus in my apartment (the other lines on my account) do not seem to have this issue. While I haven't done so with the S4, the Nexus exhibits this problem when my SIM is in it - and again, this is a fresh SIM from just a few weeks ago.
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