Macbook Pro Self Assigning IP Addresses

Hi,
I bought a Macbook Pro in August of this year, that came with Lion. I had no trouble connecting to the internet in my apartment, and had no problem connecting to the internet on my college's campus. However, a few weeks ago, I brought my computer to campus and when I tried to connect to the internet, it said I could not connect because I had a self assigned IP address. By this time, my computer had upgraded to Lion 10.7.2. My college's campus does not require a password, so I just deleted it off the list in network preferences when I got back to my apartment and brought it back the next day. It finally seemed to work ok. Then I went to my friend's house over the weekend and she has a password for her internet, and after I entered it correctly, at first it told me the same error about a self assigned IP address, but then it finally connected. Today on campus, when I turned on my computer the first couple times, it worked fine. But now when I just turned it on again it came up with the self assigned IP address error again.
I'm not sure if there's anything I can do because this seems to keep happening inconsistently. But I was wondering if anyone had any tips, and I'm happy to provide any additional computer information because I'm not sure what else is necessary to know for this situation.

OK try this:
Open System Preferences/Network and for Location select Edit Locations
Click the + sign down left and create a New Location called 'Home'
Under Location then select 'Home'
Down left is a button with a cog and small down arrow on it, click that for a pop-up menu and select 'Set Service Order'
When that window opens drag Airport to the top of the list and put Ethernet second and Firewire third, click OK to close the window
Back in the main window click on Airport (at the top of the list) and then hit the 'Advanced' button down right
Click + and enter the name of your home wireless network and set the appropriate Security setting and enter the password - click 'Add' when done. Drag it to the top of the list if multiple items so it always tries that first.
Click the DNS Tab at the top then hit + and enter the Primary & Secondary DNS Servers supplied by your ISP, if you can't find these try using 4.2.2.2 and 4.2.2.1 - click 'OK' when done.
Click the TCP/IP Tab and set 'Configure IPv4' to Using DHCP and IPv6 to Automatic then click 'OK'
Click 'Apply' bottom right and you should be assigned an IP number by your router and have Intenet Access

Similar Messages

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!

MacBook Pro Self-assigning IP

I got the new MacBook Pro at Christmas and only recently has my Airport been acting up. It started about 2 weeks ago with it not connecting right away to a secure network on my campus and then a couple of days ago stopped working while I was at a hotel. It began working again when I got back home but then last night, it stopped working and when I checked the network diagnostics it says it has a self-assigned IP and may not connect to the internet
I have the newest updates (even for Airport) and my firewall is off and the IPv4 is set to Using DHCP and the IPv6 is set to automatic. I don't really know what that means. Any help would be appreciated. I hate having to be wired in all the time.
Thanks!

OK try this:
Open System Preferences/Network and for Location select Edit Locations
Click the + sign down left and create a New Location called 'Home'
Under Location then select 'Home'
Down left is a button with a cog and small down arrow on it, click that for a pop-up menu and select 'Set Service Order'
When that window opens drag Airport to the top of the list and put Ethernet second and Firewire third, click OK to close the window
Back in the main window click on Airport (at the top of the list) and then hit the 'Advanced' button down right
Click + and enter the name of your home wireless network and set the appropriate Security setting and enter the password - click 'Add' when done. Drag it to the top of the list if multiple items so it always tries that first.
Click the DNS Tab at the top then hit + and enter the Primary & Secondary DNS Servers supplied by your ISP, if you can't find these try using 4.2.2.2 and 4.2.2.1 - click 'OK' when done.
Click the TCP/IP Tab and set 'Configure IPv4' to Using DHCP and IPv6 to Automatic then click 'OK'
Click 'Apply' bottom right and you should be assigned an IP number by your router and have Intenet Access

Hi, I have a MacBook Pro and a PC both connected to a TC who in turn is connected to a cable modem. I have no wifi accessfrom my MacBook pro (self assigned IP - no internet connection msg) while I do on PC through ethernet? can anyone help?

I was working yesterday afternoon when the wifi suddenly went cold. Initially on the MacBookPro and on the ethernet connected PC. I reinitialized modem and TC through the mac and then the ethernet on the PC worked again and has since.
I've reinitialized both the modem and TC many times, as well as checked the cables. Moreover, I've tried to renew the DHCP lease, provide the DNS servers manually, erased all networks in Network preferences and in KeyChain etc. but nothing seems to work.
One strange thing also happened. I had two networks created, one for me and one I created for guests. The latter one just vanished, dissapeared without a trace.
I've tried from the café down the street and the Wifi worked perfectly well though a little slow, but that could be their connection not the Airport. Therefore, my I deduct that there is either something wrong in the TC or something went wrong in the network settings in the Mac. But that doesn't help to move forward and fix the darn thing.
The only thing I haven't done is completely reset the TC, but after reading a couple of help threads on different forums I'm confused as to how to proceed to get it back to worrk? Has anyone had the same or similar issue and found a solution?
Thanks

Eh la Pastenague! Je savais que tu était léthale pour l'homme mais ce sont pluôt les machines à pommes qui devraient te craindre. Merci! Solved.
For future reference.
My TC is a 3rd gen.
I actually had to reset to standard defaults not only once but twice. The first time I simply returned to my old profile but that only led to the same message error on the network settings (i.e. IP by default, cannot connect to the internet). Therefore the second time around I kept my profile as backup and re-created a new one plus a guest one.
The airport utility then signaled to issues remaining:
1) Internet access was cut - this I solved by simply reseting the cable modem
2) There were no DNS Servers - I simply copied the ones I had from the previous setup and it worked
I did have AppleCare....
I'm online again and I hope for good.
Thanks a lot
PS. a small tip - I made captures of all my settings in Network settings, Airport Utility and Network utility using Grab in case of ... if anything it is just handy to get back settings that your are missing when setting up a new configuration

Hey, for some reason i turned on my macbook pro 2012 and it says i have no internet access. I then found out that it also says that my self assigned ip address will not connect to the internet. How is this and how can i fix it?

hey, for some reason i turned on my macbook pro 2012 and it says i have no internet access. I then found out that it also says that my self assigned ip address will not connect to the internet. How is this and how can i fix it?

Reset your modem.

My Macbook Pro says Wi-Fi has the self-assigned IP address 169.254.74.157 and will not be able to connect to the internet.

I just got my new Macbook Pro today. When I tried to connect it to my Wi-Fi at home it won't connect. I put in my WEP key correct every time and it keeps saying "Wi-Fi has the self-assigned IP address 169.254.74.157 and will not be able to connect to the internet" . I connect my iPod touch to this same Wi-Fi all the time plus my other laptop and my phone and it works fine. Please help !! I use Verizon Fios modem/router.

Hi, it could be that the Router will not allow you onto the network..Reboot, Modem,Router & computer..
Find out the native IP address for your Router & reset the network configs''
Use Keychain Access to Delete all Internet/Router Passwords etc.. Then Roboot..

My macbook air will not connect to the internet due to a self assigned IP address. I have tried trawling the support forums, but either I can't understand the suggestions, or they don't work. Please explain to me in simplest terms how to fix this. Thanks!

My macbook air will not connect to the internet due to a self assigned IP address. I have tried trawling the support forums for hours, but either I can't understand the suggestions, or they don't work. Please explain to me in simplest terms how I can fix this. Many thanks!

The warranty entitles you to complimentary phone support for the first 90 days of ownership.
If you bought the product in the U.S. directly from Apple (not from a reseller), you have 14 days from the date of delivery in which to exchange or return it for a refund. In other countries, the return policy may be different. If you bought from a reseller, its return policy applies.

My MacBook is self-assigning its IP address (and won't let it go)

My MacBook is generally well-behaved, but at times (seemingly random times), it self-assigns an IP address when it should be getting one from a router. The problem is sporadic and occurs in two separate locations - home (where I have control of the wireless router) and school (where I have no control over the router).
Sometimes I come home from school, and I have no problem connecting to my WLAN (2Wire router). Sometimes, however, I get the dreaded "self-assigned IP address" message, and I cannot thereafter get an "un-self-assigned" IP address. I have tried renewing the DHCP lease - no luck. I have tried trashing com.apple.airport.preferences.plist, and although that has worked on occasion, usually it doesn't solve the problem. Even more maddening is that rebooting doesn't help. Nothing consistently solves the problem - and that is so much more annoying than the problem itself!
At school I have this same problem and more. The school network SSID is not broadcast, so AirPort seems not to be able to remember it. Every single time, despite the fact that I've asked it to "remember this network," I have to type in the SSID and WEP in order to join the network. Sometimes it works quickly, and sometimes it won't work for a while, and other times it self-assigns an IP address. (ARGH!) And then I have to try the hit-and-miss "solutions" that work sporadically at home, which work equally unreliably at school.
Can I make it STOP self-assigning an IP address when it thinks it can't get one from the network? Part of the problem seems to be that the AirPort does not to want to give up its IP address after it has self-assigned. Is there an equivalent to the DOS command ipconfig /release that I could type from a terminal window? (It has been a while since I used UNIX.)
There are many things I like about my new Mac (I was a UNIX user in grad school and then had to use a PC at work, so I am a newbie to Mac OS), but this problem is totally unacceptable for a computer that is supposed to be so much better than a Windows-based machine. At least in Windows I knew how to troubleshoot problems - here I am completely helpless! And I CANNOT believe Apple has not fixed this, because from what I can tell by looking on the web (when I can actually get a real IP address), people have had the problem for at least FOUR YEARS!!!!!!
Please help - I am desperate! Thank you in advance.

Have you tried making a New Location for each yet? The Automatic one get confused easily.
Some "nix" to try when it happens also...
sudo ipconfig set en1 BOOTP;sudo ipconfig set en1 DHCP
sudo ifconfig en1 down;sudo ifconfig en1 up
Sometimes having an all OFF Location can help, thanks to Gnarlodious...
http://gnarlodious.com/Computer/MacOsx/WiFi

Rebuilding aMacBook 1.83 GHz Intel Core Duo, hard drive failure so rebuilding system. Aircard will not stop self-assigning IP address. Any ideas how to resolve successfully?

Had hard drive failure on MacBook 1.83 GHz Intel Core Duo, so had to rebuild the OS on new drive. Was on Lion 10.7.5 prior to failure, but had to reinstall Snow Leopard 10.6.3 since that was most recent OS on media I had. After finally getting ethernet connection to router working, was able to get to internet and download / upgrade to 10.6.8. I assume I can probably buy the upgrade to Mountain Lion 10.8 from there.
Problem is this, Airport will not stop self-assigning IP address for my wireless connection, and unless I can get wireless back on this laptop, doesn't make a lot of sense to continue the rebuild and reinstall of all the software that was on it prior to HD failure. Only way to my home network and router is ethernet now. Everything else on my network (Apple MacBook Pro laptops, iPhones, desktops, and non-Apple printers and laptops) is hooking up to router wirelessly fine.
Any ideas how to resolve successfully so that the airport will stop self-assigning and allow the router to assign the IP address?

When see the beachball cursor, note the exact time: hour, minute, second.
These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.
Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above.
Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first.
Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name, may appear in the log. Anonymize before posting.

"self-assigned' IP address.

Firstly to be semantic. Part of my frustration at this problem is the fact that Apple call this a "self-assigned" IP address. In no way have I assigned this IP address myself. My Macbook Pro assigned it for me.
I have had this problem intermittently since I bought my Macbook Pro years ago. The first time I found a solution by renewing my DHCP lease and sometimes that would work, sometimes not.
Second fix is a reboot, third fix is to make airport inactive and then re activate it again, fourth fix is to add new location from system preferences and then start from fix number one again
I have also tried various commands suggested for terminal and tried deleting folders that have been suggested as the cause.
But now returning from a trip overseas I get the "self [apple] - assigned IP address" message and none of the fixes that I have wasted my time applying in the past are working.
It's almost comical because just a week ago I was saying to somone how I was thinking of moving to PC as I had had enough of trying to fix problems with my Mac.
Hours of trawling the internet for a simple walk through of the problem suggests anything beyond what I have already tried. I can't believe I have put up with this issue for so many years, just accepting that it's a small problem that occaisionally interupts the massive benefits of using a Mac.
So if anyone has a final suggestion of where to go to fix the problem [on line] I would be so releived of my frustrations. If not then I am heading out to buy a PC tomorrow and I will take great pleasure in destroying my Macbook Pro.

I have a little Macbook that connects to my wifi connection automatically without any problems and always has.
I have a much more expensive, much more powerful 2010 Mac Pro Quad Core which is totally incapable of jumping on to the same Wifi Connection. Even if both devices are right next to one another.
Of course, I have the usual 'Self Assigned IP' problem, and like you, I have trawled the internet endlessly following all sorts of guides, all sorts of DHCP Renewal methods and all sorts of manual methods and all sorts of Firewall settings etc etc etc.
In the end up, none of it ever works. Except for the very rare occasionally day I'll turn the Mac Pro on and it will have randomly decided to connect to the WIFI connection and work fine.
I gave up trying to figure it out. I can no longer connect to the internet so my Mac Pro has to live with no important updates etc. Not very future proof at all and extremely frustrating.
I run a busy recording studio so its solely the fault of this problem that I struggle to be as competitive as my rival studios as I can not preform the simple Audio software updates everyone else can. Brilliant.
INFURIATING.

"Self-assigned IP address" won't connect to Internet

I have two Macs connected to my DSL modem: a MacBook Pro (10.5.2) and a PowerBook G3 'Pismo' (10.3.9). Yesterday both were working fine, but just now when I started up the PowerBook it told me "Built-in Ethernet has a self-assigned IP address and may not be able to connect to the Internet." Indeed, though the cable is connected just like yesterday, there's no Internet (though the MBP is connected just fine).
Anyone have any idea why this happens, and what to do about it? I've tried disconnecting/reconnecting the cable, and restarting the PowerBook, to no avail.

Your router uses a system called DHCP to allocate an IP number to any computer connected to it. So when a computer is booted, the router recognizes its presence and allocates it a number. If the computer is running 24/7 the number's 'lease' is usually renewed every few days.
Sometimes the process falls over and the computer fails to get an IP number from the router: when this happens it allocates itself an emergency number with the results you describe. As you found, rebooting the router usually clears the problem.
It may be possible to reprogram the router and the computer to use a fixed IP number, it depends on the router. Very possibly this would prevent the problem occurring since both ends would 'know' what the number should be from the off.

Airport and a self-assigned IP address - can't access wireless net

I have a strange issue with Airport picking up a wireless network.
I'm not in my usual location using my MacBook Pro.
There is a wireless network here.
Airport sees it, and asks for the password (provided to me).
Airport looks connected, but, I see the message: "Airport has a self-assigned IP Address and may not be able to connect to the internet".
And in fact, it cannot. I've run through the diagnostics routine twice, and no go.
How do I get Airport to accept an IP address from this wireless configuration?

I am having a nearly identical problem. The solution provided did not work for me.
We have two MacBook laptops, one is mine and the other my wife's. My laptop still works fine. The AirPort communicates well with the wireless router. My wife's laptop just started having this problem about a week ago. The latest Airport software updates helped, but did not solve.
The problem is that I now have to go into network diagnostics everytime to connect my wife's laptop to the wireless router. I have to re-enter the password to the router each time. Once I enter the password, it finds the IP address and connects everything properly. I checked the keychain password and it is there, so I don't know why it keeps losing the IP address.
One thing that I did preceded this problem. I changed my router password to WEP. If anyone knows if this could cause the problem, let me know.

Self-assigned ip address -- can't connect to Airport

I have a 2006 MacBook Pro which recently started exhibiting the exact same behaviour as reported by another poster in 2011:
For some reason the computer has started self-asigning its IP address and Network Preferences says that, because of the self-assigned IP, i cannot connect to the network.
I have two other Macs connecting to the same Air Port with no issues and I've tried to duplicate those settings on the MacBook Pro but still get the "self-assigned ip" message
Tried re-setting SMC and PRAM, no change.
The only change to my wireless setup was the change from a Verizon-owned modem to an owned Motorola unit (but the MacBook Pro connected successfully, many times, after the change).
I didn't knowingly change anything on the MacBook Pro -- from one day to the next it just stopped connecting.
I'm really at a loss to understand what's going on and, of course, not happy that the MacBook Pro can't connect to my network anymore! Help!

The wifi icon shows no connection with the network -- the "!" mark.
However the computer sees the network, i.e. when I search in Network Preferences the network is listed.
So: 1) the computer sees the network but 2) will not connect to the network. The reason given for refusal to connect is "self-assigned IP address".
Not to be repetitive but two other Mac laptops are connected to the same network and working perfectly. The network preferences, as shown in the "advanced" section, are the same for all machines, i.e. DHCP is selected and IPv6 is Automatic.

Self-assigned IP address problems

I'm having a problem with my wireless router connection (my Airport card shows the network, but the "fan" is greyed out, and if I choose the network it still doesn't connect - When I check network status I get "AirPort connected to network, but has self-assigned IP address and may not be able to connect...)
I can temporarily fix the problem by going into System Preferences to Network to Airport to Preferred Networks to Assist Me and THEN it will go to my network and turn on the path.
I'm running Tiger 10.4.11 on a G5 iMac with the original AirPort Extreme card, and routing through a Linksys WRT54G attached to a cable modem.
There are a lot of networks in my area, according to my wireless "fan".
If changing channels on my router might fix this, I'd like to give it a try, but I don't know how, AND I don't want to ruin the signal to the other computers in the house, which, by the way, work just fine when the iMac loses the signal.
If there's another way to tell the router to ignore the self-assigned IP address, or to get the AirPort to stop providing this ...
The problem is obviously the self-assigned IP address. The question is what is causing this?
Is it the AirPort Extreme Card?
Is it the Linksys Wireless router?
How do I test to see which it is, without losing the signal from the router to the other computers in the house?
With so many people having the same problem, there must be an answer somewhere.
Can some kind soul please point out the correct path? My tech support (teenager) will be home from college this week, and if I can prove to him that it won't ruin everything I think he'll be up to the challenge.

Hi,
Thank you Linc & dwb, I've had no issues with the router in the 14 months its been installed. But tonight I've turned off the NAS and since then no drop off for wifi/ or assigning itself an IP address.
I will switch on the NAS once again and see what happens, would it be best to assign a static IP to the NAS? One thing I have found when checking the homehub connection details, the mac air connects at the 5Gz Wireless as does the Kindle, which has also suffered from losing the wifi connection, where as my macbook pro only connects at 2.4Gz and like I said has not had any issue. Not sure if this anything to do with the problem or not?
All I do know is that since the NAS was introduced then the problems began, so again not sure if its the NAS impacting on the router or a router setting?
thanks

How do I solve a self-assigned IP address?

Hello all,
Here is the situation: I am currently on the road with a MacBook Pro running 10.6.8 and an iPhone 4 running iOS 5.0.1.
The hotel where I am staying doesn't have WiFi, but does have ethernet cables in all the rooms. My laptop is therefore hooked up to the internet through its ethernet port. No problem there.
Way back when, I used to be able to share that internet connection with my dataless iPhone (I don't use data while travelling internationally as I'm not made of money), but going to System Pref>Sharing and sharing the internet connection, which is incoming through the ethernet port, through the AirPort. One day, it stopped working, reporting that the AirPort has a self-assigned IP address (in the dreaded 169.254.xxx.xxx range) and will not be able to connect to the internet. Hence my iPhone won't get its internet feed. I have looked all over for a solution and haven't been able to find one where the problem was similar to this one; those posts I found dealt with computers trying to hop onto the net directly, not with sharing a net feed.
I would be extremely grateful for a solution.
Many thanks!
Carl

Power cycle your router.

Macbook Pro Self Assigning IP Addresses

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