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

Other computers with same hardware and software (MacBook + 10.6) can get online using the same DHCP cable normally but mine can not. The self-assigned IP address refuses to go away no matter what I do. However, if I connect via wireless, everything is normal.
My 10.6 was upgraded a few weeks ago based on 10.5. Things were normal and Ethernet DHCP did work. This network problem suddenly appeared when the computer was functioning completely normal under a DHCP protocol using a cable.
Does anyone observe similar problems? Anyone has any clue about what's going on?
Thanks much!
--- Wei

try this. i had the same problem. found this on another forum:
1. Go to Mac/Library/Preferences/SystemConﬁguration
2. Delete the following:
a. Com.apple.airport.prefrences.plist
b. NetworkInterfaces.plist
c. Preferences.plist
3.Shut down computer
4.reset PRAM (hold commandoption+PR keys down before gray screen when booting up)

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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.

My "airport has the self assigned IP address and will not be able to connect to the internet"

I have tried everything
restarting the computer
renewing the DHCP
deleting the airport then adding a new airport
turning off the airport and deleting the keychain access codes
deleting the systems configuration folder
I dont know what to do anymore.
I can't connect to my home router or my schools secured wifi, but i am able to connect to their public wifi. my iphone connects just fine

System preferences > Network > WiFi/Airport ..
( Assist me ) > ( Assistant )...
and set it up from scratch, including a brand new "Location", not the default.
You must close the window and save changes for them to take effect.
If no joy, look at another one of you devices and post
Router Address and
IP Address and
Subnet mask

"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

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?

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

MacBook Air will not connect to Internet (no problem with other devices). Message states " Wi-Fi has the self assigned IP adresss 169.254.147.1and will not connect to Internet.

First, try restarting the router. If there's no change, hold down the option key and select the Wi-Fi menu in the menu bar. What value is shown for Security?

My air has a self assigned ip address and will not connect to wifi. I cannot access the wifi through the safari guest account nor my parallels Win 7. I have erased my keychain access, erased the 3files and renewed the DHCP lease. Nothing works. I am on

I

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, or by a peripheral device.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

I have no longer been able to connect to the internet as aiport continueously tells me that "airport has selfassigned ip address and will not be able to connect to the internet.

Up until about a week ago I have not had a single internet connectivity problem. Then, all of the sudden airport will no longer connect and it keeps telling me that "Airport has self-assigned IP address and will not be able to connect to the internet." I did not change any settings, I didn't touch anything and all of the sudden it just will not connect anymore. Any help would be appreciated. Thanks!:)

These steps often sort out this problem...
System Preferences > Network
Select the AirPort from the left hand side
Click on the Locations combo box and select Edit Locations...
Click on + to add a new location, call it "Home" (or anything else you prefer)
Click on Advanced
Select the AirPort tab and enter your network name
Select TCP/IP tab.
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Click on Proxies tab.
Select Auto Proxy Discovery and Use Passive FTP
Click on OK and Apply, etc.
Bob

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?

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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.

Self assigned Ip address 169.254.233.194 and will not be able to connect to the internet

self assigned IP address and will not be able to connect to the internet. How do I fix this?

Sorry we have no info.. so description of the problem..
Are you using wireless? If so on what? Do you have a TC?
Is this a new TC and failed to setup correctly? Or you have TC or some other wireless router that has been working fine and now failed?
Plug in by ethernet? Does it now work?
Reboot the TC.. Does it now work?
Reboot the whole network.. restart in order.. modem.. router.. TC.. whatever other network equipment.. clients.
Do some clients work and others fail?
Press and hold reset on the TC. Redo the setup.. change the TC setup to fixed channels and SMB names.
We cannot give specific answers to such vague faults.

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.

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Power-down the modem, AirPort base station, and computer(s).
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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.
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See this discussion.
Wi-Fi has the self-assigned IP address
Troubleshooting suggestions.
Troubleshooting Wi-Fi issues in OS X
Wireless Connection Problems - Fix
Wireless Connection Problems - Fix (2)
Wireless Connection Problems - Fix (3)
Wireless Connection Problems - Fix (4)
Wireless Diagnostics - About

IPad Wi-Fi has the self-assigned IP address 169.254.210.251 and will not be able to connect to the Internet. How to fix?

Mini connects to internet via cable modem fine.
Want to have ipad connect also but mini Wi-Fi has the self-assigned IP address 169.254.210.251 and will not be able to connect to the Internet. How to fix?

Hello:
I am a long way from a wi-fi expert, but.....
You need, I think, either a router with wi-fi or an airport (express or extreme). The iPad needs to connect to to a network. In my case, I use an airport express and both my iMac and iPad 2 connect to the Internet through the airport device.
Barry

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

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