Airport Connects but has Self-Assigned IP address and no internet

All right Apple this is some Bull#@$% I own 3 Apple units One is a MacBook Pro, one is a Macbook and the other is a G5 Dual processor tower. The MacBook and Tower are using OS X 10.5.5 and the MacBook Pro has OS X 10.4.11. Ok here is my problem all of a sudden all 3 units that had been connecting to the same wireless router for the past year started saying (AirPort has a self-assigned IP address and may not be able to connect to the internet) Apple Care suggested replacing the router well I did that and hello I have the same message. Its connecting but not going to the internet. Under network status I have green lights for Airport and Airport settings a yellow light for network settings and red lights for ISP, Internet and Server. I have this problem with both MacBooks both at the library, my friends house and my neighbors house thats 4 different wireless networks that do the same dang thing. I need help!!

I have also encountered this problem and I have been researching it all over the internet all evening and trying everything I could find a suggestion for. Here's what I have: Two G4 Powerbooks, one is a 550MHz 15" Powerbook, the other is a 1.5 GHz 17" Powerbook, they are both running 10.4.11 with all the updates that Software Update has to offer, the 17" is connecting via built in Airport Extreme card, the 15" is connecting via Sonnets Aria Extreme PC card. I have AT&T DSL and I'm using the 2Wire modem/router they provided me with. Neither of the Powerbooks can connect wirelessly to the internet. Furthermore, they cannot even ping the wireless router. 4 days ago, both were connecting without any trouble (and had been able to reliably every day since the beginning of August when I hooked everything up). I have made no changes to my router's settings over the weekend. Nor had I made any changes to the Powerbooks' settings during that time. It just stopped working. If I wire one or both of them to the router with ethernet cables, connection works fine. My Desktop G4 which is normally wired into the router via ethernet, connects fine so I know my internet service is available.
So far, I've restarted both machines numerous times, restarted the router numerous times. Reset the WEP password. Changed the wireless security to WPA. Changed it back to WEP. Trashed the airport plist. deleted every wireless network entry in Keychain. Disabled DHCP and assigned IP numbers manually. Changed the wireless channel (I've tried 1, 6, and 11 with and without interference robustness).
I've been reading posts about this issue on half a dozen web forums (dating back to as early as June 2004). It appears to affect a variety of routers (2Wire, Netgear, Linksys), a variety of machines (Powerbooks, iBooks, MacBookPros, iMacs) a variety of OSes (10.3, 10.4, 10.5).
This thing is really getting me down. Anybody have any other ideas?

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Wifi works for everyone but me - I get a "self-assigned IP address" and no Internet connection

I have the most confounding Wifi problem. I just got Verizon Fios, and it works perfectly on my roommate's laptop, his iPad, and on my iPhone. But it doesn't work on my Macbook Pro (running Lion). My Macbook has no problem connecting to other Wifi signals - in fact, there's another connection in my building that I can connect to just fine from my room.
When I try connecting to our own Verizon signal though, the Macbook hunts around for a few seconds, then connects - but says there's no Internet connection. I get an ominous exclamation mark over the Wifi icon. My computer gives me a "self-assigned IP address" and says it can't connect to the Internet.
I've tried everything I can think of: Restarting the computer, turning Wifi off and on, deleting and then re-accessing the signal, turning the firewall on and off, renewing the DHCP lease, restarting the router, switching channels on the router, and more. At this point, I'm out of ideas. Any suggestions?

Please try each of the steps that follow, in order, until resolved:
STEP 1 - Create a New User Account
System Preferences > Accounts
Click "+" to add a new account.
Log off, and then, log back on with the new user account.
Try connecting to a Wi-Fi network with your Mac's AirPort.
If this resolves the problem, there may be something amiss with your current profile and will require further troubleshooting.
If this does not resolve the problem, go ahead and log back into your normal account and go on to the next step.
STEP 2 - Preferred Networks
Delete Preferred Network(s)
System Preferences > Network > Select AirPort > Advanced > AirPort tab
Under Preferred Network, use the minus button to delete the network(s) you regularly use from the list.
Delete AirPort Keychain Entries (Note: This only applies if you connect to AirPort/Time Capsule routers)
Launch the Keychain Access application located in the \Applications\Utilities folder
Click on the "Kind" filter at the top, and look for any "AirPort network password" entries, and then, delete them.
Restart, or log out, then back in.
Add Preferred Network(s)
System Preferences > Network > Select AirPort > Advanced > AirPort tab
Under Preferred Network, click on the "+" button to add any preferred network(s).
Restart, or log out, then back in.
STEP 3 - Move System Configuration Files
Note: You will have to reestablish your network connection settings.
In Finder, go to the Macintosh HD/Library/Preferences folder.
Move (not copy) the SystemConfiguration folder to the OS X desktop.
Restart your Mac. (Note: OS X will automatically rebuild this folder and the associated files contained within.)
If this doesn't resolve the issue, you can move the folder (now on the Desktop) back to its original location.

MacBook has self assigned ip address and cannot connect to the internet.

Is there an Apple recomended fix for this problem that works? I've looked on this board and have found several similar suggestions but as yet nothing that results with consistent connection every time I restart.

Since there is no exacting way to tell what of several suggestions offered in
these discussion boards, you may have tried, I will offer an Apple Support
article name and web address link; it may be you have tried this:
• Mac OS: How to release and renew a DHCP lease
http://support.apple.com/kb/TS1920
And you can get a similar self-assigned IP address via a wireless network
or a wired local network - with a theoretical connection to the internet. If
the actual connection in software is not set correctly, the default will likely
be something very familiar since the same one appears then.
If the Network system preference panel is set and you have chosen the
mode of connecting to the internet or other connected network, then
you can set the configuration of that choice in a secondary screen. In
order to have a choice to connect via AirPort, for example, you have to
check box the item and also drag it into a position of priority (first.) Or,
if you have to connect via Ethernet to a cable/DSL modem (if not USB)
you can choose to place Ethernet in a position of priority above others.
Then, further the Network configuration's next step to set it up correctly.
The above link does cover the basics adequately, including a reset of
the cable or DSL modem. If there is a cable modem and also a wireless
base station, you may also have to reset each of them in a specific way
in order to get them to start up and work. This may be all it takes.
Good luck & happy computing!

Self-Assigned IP error and no Internet thru cable, but fine via Airport crd

I am having a vert weird problem. Airport base station hooked to a LAN router, new Mac Pro (10.5.1) hooked via cable to Airport base station. I get the self-assigned IP address and no internet. This happens also if I hook Mac Pro directly to router via cable. Oddly enough, during all of this, my iBook connects fine to the Internet, thru the base station using its Airport card. What gives, I may throw in the towel and go out and by an Airport card for my Mac Pro to get Internet connectivity, even though it sits only 6 inches from the base station. Also not, my Power Mac G4 was hooked via cable to the Airport and worked just fine...
If someone discovers a fix, please feel free to email.
Thanks,
Bob A.

Funny you should mention that. This weekend I noticed that I can get an IP address and internet connection, either via the Ethernet cable from my AEBS or wirelessly from the AEBS on my laptop, but only one at a time and it depends which computer (iBook or Mac Pro) is on when the AEBS is toggled on/off. The only exception is my iPod touch, which can get an internet connection no matter which is the Internet connected machine(how's that for bizzare ?).
So, it appears the Linksys router that is hooked to our building's LAN is not distributing IP addresses (disconnecting the router and connecting the AEBS directly to the LAN produces the identical single IP address situation). Since using my Mac Pro with Leopard, I can only set up the AEBS in bridge mode, putting it in the DHCP mode causes the AEBS to be undetecable by the Mac Pro (haven't checked if the iBook sees it).
So I guess the questions are now:
- Shouldn't my router be assigning IP addresses from the LAN, isn't that it's job? Should I try buying a new one since I can't get AEBS to DHCP?
- Why would my iPod touch me immune from the single IP address situation?
- Any idea how to get Leopard to allow my AEBS to use DHCP?
Now I say I can't use DHCP, I mean that if I reset the AEBS, start from scratch and use assisted setup with Airport Admin Utility, and select DHCP at the place where you select Bridge or DHCP mode (or whatever the DHCP mode is called, I forget)the AEBS disappears. If I set bridge mode and then dicker around with DHCP manually, it doesn't disappear, but then it just won't give an IP address to any computer til re-rest and put back in old plain Bridge mode.
I would prefer to run the LAN right into AEBS and have it act as router and all that. I would also be fine with having a router and letting AEBS just bridge, just as long as I can connect to the Internet on more than one computer at a time.
I think I have a basic knowledge of what's going on, although my use of proper terminology is lacking, so feel free to follow up with any questions, I'd be happy to clarify.
This Leopard Mac Pro replaced a PowerMac G4 with Tiger and this all worked fine with it. When I traded computers and didn't get Internet I reset and re-setup the base station, so this might all be a Leopard problem
Of course, it brings me back to shouldn't the router hooked to my building's LAN be distributing IP addresses?
Thank you in advance for your help on this isssue.
Bob A.

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.

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?

Airport card in PB G4 has "self assigned IP address"

I've been using a PB G4 with my Linksys router for quite some time, and now it won't connect to the internet. I shows the signal strength, and that's it's connected to the router but no internet. I've run all the utilities, and diagnostics, but nothing has been fixed. The only thing I see is that the Airport has a "self assigned IP address and may not be able to connect to the internet." This message is in the network preferences.
I'm not sure if this is in the correct forum, but if anyone can help that would be awesome.
Thanks in advance for your help.

When I came back to it, the battery was completely dead and the clock had reset to 1969.
It sounds like you need to replace the PRAM battery on your PB. I would suggest doing so before attempting any additional troubleshooting of the AirPort Card.
Please check out the following iFixit link to see if your PB has a PRAM battery and what it would take to replace it.

Wi-Fi has self-assigned IP address 169.254.9.151 and will not be able to connect to the Internet

In trying to setup my AirPort Extreme, it connects to the Internet on ethernetcables to computer but says it is not on WI-FI. I have configured it with all that I casn think of and yet I get, "Wi-Fi has self-assigned IP address 169.254.9.151 and will not be able to connect to the Internet." Can anyone tell me what is wrong?
I did both a soft reset and a hard reset to no avail. PLEASE someone help!!
Thanks!

I would recommend that you do the following as a minimum:
Power-down the modem, AirPort base station, and computer(s).
Power-up the modem; wait at least 10-15 minutes to allow it adequate time to initialize.
Power-up the AirPort base station; wait at least 5-10 minutes. Note: The AirPort's status light may continue to flash amber after it has intialized. That is because, there may be some additional configuration items necessary, like setting up wireless security, before the overall setup is completed to get a green status.
Power-up your computer(s).
If the above steps do not solve the problem, start over with step 1 above, but then perform the next steps between steps 1 & 2. above.
Disconnect the AirPort base station from the Internet broadband modem.
While all of the devices are powered-down, perform a "factory default" reset on the base station. This will get it back to its "out-of-the-box" configuration and make setting it up much easier, especially if you use the "Assist me" process within the AirPort Utility. (ref: Resetting an AirPort Base Station or Time Capsule)
After the base station resets, go ahead and power it back down.
Reconnect the AirPort base station to the Internet broadband modem. For the Extreme and Time Capsule, be sure to connect the cable to the base station's WAN (circle-of-dots) port.
Continue with step 2 in the first set of steps.
In this basic configuration, the AirPort base station will broadcast an unsecured wireless network with a Network Name (SSID) of Apple Network NNNNNN. Network clients, connected to the base station either by wire or wireless, should now be able to access the Internet through the ISP's modem. Once Internet connectivity has been verified, you can use the AirPort Utility to configure the base station for wireless security and any other desired options. Please post back your results.

HT4628 My Mac Air OSX10.8.5 won't connect to the internet as it says it has a self assigned IP address and thus cannot connect to the internet. I can only connect to a network by manually typing in the configuration specs. Please help.

My mac air OSX10.8.5 won't connect to the internet. It says it has a 'self assigned IP address and therefore cannot connect to the internet'. Network diagnostics is unable to the solve the problem. It happened suddenly for no reason and now I cannot connect except by typing in the configuration settings manually. Please help me!

Use the Airport Utility or log into your wireless device via http and ensure the DHCP/NAT service is enabled. If accessing via HTTP, you will need to manually set an ip within your local subnet (eg: 192.168.0.x).

Ethernet has self assigned IP Address,will not connect to internet?

Ethernet has a self assigned IP Address and will not connect to the internet.
I am on - Mac os X - 10.7.5
Using a BT Broadband Router, my power mac is connected to the network via TP-Link Plug POWERLINE. This has worked great for ever!
A week ago, my web connection dropped, network settings say "Ethernet 1 is active and has a self assigned IP Address and will not connect to the internet"
This seems to be a popular thread and I have followed all the answers I can find and the problem remains.
I also run a Powerbook on the wireless internet and other appliances such as, iPads, iPhones, and the wireless is fine.
My sky box and Xbox 360 (both ethernet via TP-Link) also have NO connection.
When I turn my laptops wireless off and try the ethernet cable (tried a new one too) instead, there is the same SELF-ASSIGNED IP ADDRESS issue.
This point me to the router or TP-Link network. I have replaced the router, same errors.
On my Powermac I have -
Deleted 'system configuration from the system folder - as advised by apple.
Tried swapping from DCHP, DCHP Manual and renewing lease etc.
Could anyone help at all? I am lost now as how to solve the problems.
All my TP-Link power line extenders show the correct lights, i.e., all on and yellow.
I am not experienced in networks, this is driving me mad now!
Any help would be appreciated
Thanks
A

Open System Preferences/Network
Select the Location you use at home
You may need to click the Padlock bottom left at this point if it's locked, enter the admin password to unlock
In the left hand column drag the Ethernet connection to the top of the list and remove any you don't use
Click the Advanced button bottom right
Click the TCP/IP Tab
Set Configure IPv4 to Using DHCP
Click OK bottom right and you should see the Router IP number appear and a unique but similar one for your Mac
Click Ok then click Apply and close the Panel

"ethernet has a self assigned IP address and will not connect to the internet" - how do i fix this?

A message saying "ethernet has a self assigned IP address and will not connect to the internet" comes up whenever I plug the cable in. Everyone's computers work except for mine work in the house and I have tried different cords and connecting sites.
Please help

Open System Preferences/Network
Select the Location you use at home
You may need to click the Padlock bottom left at this point if it's locked, enter the admin password to unlock
In the left hand column drag the Ethernet connection to the top of the list and remove any you don't use
Click the Advanced button bottom right
Click the TCP/IP Tab
Set Configure IPv4 to Using DHCP
Click OK bottom right and you should see the Router IP number appear and a unique but similar one for your Mac
Click Ok then click Apply and close the Panel

Ethernet has a self-assigned IP address and will not be able to connect to the Internet. on host mac

im using a cross over cable from a macbook pro{mavrics}, to a imac {lion}. ive been sharing internet from a dongle no problem for months but now it started saying Ethernet has a self-assigned IP address and will not be able to connect to the Internet. on the macbook. and every thing is hay ok on the imac ¿¿¿ ive been googling all day to no avail

System prefs > Sharing. seroapple wrote:
im using a cross over cable from a macbook pro{mavrics}, to a imac {lion}.
Don't need a crossover cable.
Make sure System prefs > Sharing is set up correctly.
-> https://support.apple.com/kb/PH13855?locale=en_US

Ethernet has a self-assigned IP address and will not be able to connect to the internet

Ethernet has a self-assigned IP address and will not be able to connect to the internet
The problem appears to have been a connection error as well as the system preferences which have reset with a 'valid' IP address after a system preferences 'reboot'.

Power off your internet router. Disconnect completely from its mains power by pulling the plug out of the mains socket. Disconnect all ethernet leads and cables to the router. Wait a minute or so and then reconnect all cables and turn on the power. See if your internet starts.

Computer-to-computer Airport network no dice - "self assigned IP address"

I have spent hours reading posts on this and other forums about this problem with Airport, but none of the fixes have connected me to the Internet. My new iMac has a DSL line coming into it and an Airport card. My eMac has an Airport card too. I am not using a base station. The eMac recognizes the network I created, it even allows file sharing, but in the TCP/IP prefs, I get the dreaded notice about how the computer is using a "self assigned IP address and may not connect to the Internet." So I took one user's advie and set it up to use DHTP manually and I typed in an IP address of 10.10.10.x and my "network status" finally went from the yellow dot of death to green, saying I was connected to the Internet. But my browsers sure don't think so. I turned firewall off. Still no help. Do I have to turn firewall off on the iMac, from which the eMac is getting its Airport signal? I need a firewall, right? "Firewall good," right?
The issue was the IP address until I entered a manual one. Now the issue has changed. I am connected to the network, and at least technically to the Internet, according to the computer's ability to gauge such things, but I'm still not online. I have done the "unplug the DSL modem" thing, and unplugged the computers, and turned Airport on and off, trashed Airport prefs from the Library and all the sensible things people have mentioned online. I am hoping some fresh eyes see this. Can it have to do with my iMac's settings, not the eMac I'm having trouble connecting with? I've spent about 12 hours on this with no luck. Thanks,
George

O.K., I tried to launch the specified site in Safari and it never loaded anything or gave me an error message. The blue filled up the address bar to cover up "http://" but it didn't progress further. The IP address it self-assigned is 169.254.60.164. My iMac which should be Internet-sharing is not sending it a proper IP address.
Both computers are up to date with updates. The iMac has OS 10.4.10, and the eMac has 10.3.9 because I still run Classic mode. I don't know enough about computers to know if those system differences would cause a problem in Airport. They both have Airport Extreme cards. Any idea which settings in the source iMac I'm sending out the Internet signal from could cause this problem? I have personal file sharing on, personal Web sharing, and printer sharing.
In my Network preferences, under my SBC DSL, the IP address looks normal, starting with a 75, but under Airport, it starts with 169.254 like the eMac's IP address setting. I don't really understand these technical issues, and I've never dealt with a wireless network before. I guess I can always pony up $180 and use a base station, and problem solved. I would think. But computer to computer Internet sharing is supposed to work, so now I am obsessed with it. Thanks again.

HT3466 Airport has self assigned IP address 169.254.153.51 and will not be able to connect to the Internet

Cannot connect to internet wirelessly because I get the message "AirPort has the self-assigned IP address 169.254.153.51 and will not be able to connect to the Internet."

I would recommend that you do the following as a minimum:
Power-down the modem, AirPort base station, and computer(s).
Disconnect the AirPort base station from the Internet broadband modem.
While all of the devices are powered-down, perform a "factory default" reset on the base station. This will get it back to its "out-of-the-box" configuration and make setting it up much easier, especially if you use the "Assist me" process within the AirPort Utility. (ref: Resetting an AirPort Base Station or Time Capsule)
After the base station resets, go ahead and power it back down.
Reconnect the AirPort base station to the Internet broadband modem. For the Extreme and Time Capsule, be sure to connect the cable to the base station's WAN (circle-of-dots) port.
Power-up the modem; wait at least 10-15 minutes to allow it adequate time to initialize.
Power-up the AirPort base station; wait at least 5-10 minutes. Note: The AirPort's status light may continue to flash amber after it has intialized. That is because, there may be some additional configuration items necessary, like setting up wireless security, before the overall setup is completed to get a green status.
Power-up your computer(s).
In this basic configuration, the AirPort base station will broadcast an unsecured wireless network with a Network Name (SSID) of Apple Network NNNNNN. Network clients, connected to the base station either by wire or wireless, should now be able to access the Internet through the ISP's modem. Once Internet connectivity has been verified, you can use the AirPort Utility to configure the base station for wireless security and any other desired options. Please post back your results.

Airport Connects but has Self-Assigned IP address and no internet

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