MBP Self Assigning IP Address on one router only

This seems to be a common problem and seems to have been occuring for quite some time now. I am very disappointed that Apple have not come up with a simple fix for it.
Here is my version of events: I recently upgraded to OS X Mavericks and ever since I did that my MBP will not connect to one of the routers in my office - all my other devices and all the other MBPs manage fine. I have tried the following:
- Resetting the router
- Deleting the network from Keychain Access
- Resetting the firewall
- Restarting / rebooting my MBP
- and varying combinations of the above
I fail to believe that a permanent fix has been discovered, sometimes one of the above 'fixes' will work temporarily, other times not at all. Sometimes I am able to connect to the wifi for a full day, other times for 5 minutes. Nothing should be this sporadic.
I am also disappointed that I have to trawl through forums to find answers.
Stop making me sad Apple.

If your computer connects fine to other networks/routers then it would seem logical that there is a router issue with the router that can not be connected to. Why would you assume it is an Apple problem? Make sure the router has its most current firmware and that all settings are correct. Do any other devices have issues connecting to the suspect router?

Similar Messages

Self Assigned IP address - NO internet - but only at home.

I have a White 2010 Macbook running Snow Leopard and I keep getting a message about a self assigned IP address and can not connect. But, I can connect to my neighbors internet with no problem.....it's only mine that does this. It was fine 2 days ago. I've tried inputting the IP address manually, I tried deleting the network, deleting the airport, and each time I reboot it gives me the same message. Not sure if the issue is my computer or the router. On my mothers computer she can connect with no problem (not a macbook). Any ideas? I search prior to posting and tried many of the recommendations with no luck.

I think the Wi-Fi chip of your router is spoiled, to check if this is true try connecting your MacBook with a ethernet cable and if you are able to surf the web then the Wifi of your router is spoiled.........

Self-assigned ip address starting with 169

Trying to connect to free wifi in paris but my gf's computer won't connect, instead it gives me a self-assigned IP address starting with 169, any thoughts on how I fix this?
Free wifi is a very big network in Paris, you only need a username and a password to sign in and can get connection almost everywhere in the city.
It works on my computer, but not on my gf's. It also works on my iphone, it's only her computer that doesn't connect. It worked on her computer aswell until yesterday evening.

Self-assigned IP Addresses 169.254.xxx.yyy are the ones your computer gives itself so that it has a name while it broadcasts a request for a better IP address. A self-assigned IP address usually persists for only a second until your Router responds with a good address. Finding yourself still stuck with a self-assigned address means you cannot reach the Router.
You should look for really fundamental problems. Is the connection method you prefer the top one in the System Preferences > Networks box? Are you too far away for a good connection? If all seems OK, use the ( Assist Me ) button in that panel and follow the Setup Assistent [not the Network diagnostics] branch to establish a good connection.

Problems using MBP as WiFi router for iPad2 (self-assigned IP address)

H/W& S/W:
MBP 15" (model early 2011), running Snow Leopard,
iPad 2 WiFi only, 64Gb, iOS 4.3.4 (8K2).
Scenario:
I am in a location where there is no WiFi. MBP is connected via Ethernet to a DSL network, and has access to the Internet. I turn on Internet sharing, having set the following:
"Share your connection from" set to "Ethernet" and
"Share computers using Airport" ticked.
Previously, I have then connected the iPad 2 via WiFi with the WiFi network created on the MBP, and succesfully worked from the iPad on the Internet (email, browsing, app downloads, ...).
Problem:
Now, however, the iPad connects to the MBP's WiFi network, but when I attempt to access the Internet, I get such messages on the iPad as "Safari is not connected to the Internet" or "Cannot Get Mail ...".
On investigation, I see that Airport on the MBP is in a YELLOW status: Status On, with the note "Airport has the self-assigned IP address 169.X.y.z, and will not be able to connect to the Internet".
On the iPad, the WiFi network shows the IP address 169.X.a.b (with a subnet mask (255.255.0.0).
I have tried:
1. turning Airport off and on
2. renewing the DHCP lease on the MBP
2. configuring IPv4 address in the MBP manually
3. configuring the IP address manually on the iPad (not expecting anything with this, but ....)
4. fixed Permissions" on the MBP disk (suggested on another support community web site)
But none of these make any difference.
Message was edited by: WKH
forgot to mention: Firewall is disabled on the MBP.

Hello,
I've had the exact same problem on my macbook and it really **** me off ! I tried all of the solutions written in this forum and none worked for me ! I was really starting get mad especially that my macbook is quite new...
And the thing is i have no Apple Store where i live which is a pretty F***g problem so I had to wait for vacations to go to france where I took my macbook for check at the apple store...
I just came back right now and my wifi works till now a least far much better than before...The guy was really nice he checked everything and he tried all the solutions on this forum too..Finally he tried to boot from one of '' apple's '' usb that has suberb booting systems...And it worked so finally he re-installed 10.6.5 as it was '' corrupted '' with wifi bugs ! For that he needed to delete everything on my macbook ! GREAT !
After 15 minutes the installation was done and it started like when you buy a new macbook !
And VOILA the Wifi came back to normal !
Hope this helps...
If you have this problem go and see Apple Store or re-install yourself 10.6.5 !
Thanks !

One SOLUTION for "self assigned IP address"

Hello there, dealing with the nasty issue of "self assigned IP address" has been my latest two days nightmare, I tried lots and lots of solutions I read in forums here and there without getting to a point.
I started this post because I want to post here a solution that really worked for me and I haven't seen it posted over the web.
I don't remember where but I saw the comment that WEP encryption by the router is not very mac compatible as opposed to WPA. So a while ago when I entered my router home screen (Thomson TG585 v7) I saw the option to enable WPA-PSK encryption and went for it, I can tell you it inmediatelly got me online and till now my airport wireless conection is working perfectly.
I'm not any mac/web guru and maybe I'm stepping some technical details but I want to share this tip with all of you because I know it can be a really nasty problem that one of the gat dam "self assigned IP address" and this may help somebody else. ;-)
Best regards
Luis Erantzcani

Great tip Luis, thanks!

Why does my Airport Express say "self assigned IP address"? No IP address for the ethernet, and it is not connecting to my cable router any longer...

Why does my Airport Express say "self assigned IP address"? No IP address for the ethernet, and it is not connecting to my cable router any longer...

Some cable providers.....like mine, a well known company......seem to take anywhere from a few moments to sometimes up to 30 minutes to allow their equipment back at the cable company to fully reset and issue a new fresh connection.
So, it would not hurt to leave things powered down for 15-20 minutes or more when you perform the reset that John Galt suggests.

"Self Assigned IP Address" - connected, no internet access

I have a Netgear WGT624 v2 wireless router that is hard wired to one iMac while other laptops have wireless access to it. This set-up has been working fine for awhile - but now the laptops are saying that they are connected via the router, but they've created "self assigned IP addresses."
I called Netgear tech support and they had no answers, all they would do was make sure that the laptops were able to find the router, which they can, they just can't connect. Why are they creating their own IP addresses?
Is there a solution to this problem? What causes it?

Check your setup in the router for wireless clients. Log on to it and make sure that DHCP is enabled if you use it and you are in infrastructure mode ( wired/wireless combo ). Also, if the clients are B or G mode, make sure the router is set correctly to that mode or mixed. If the IP addresses are 169.254.xxx.xxx then they aren't really getting an address ( this may only happen in Windows, don't remember). If you don't use MAC address filtering for security, a blank list could have been turned on........ anyways, go through all your router configurations for wireless and make sure they are the same or close to the settings for the wired Mac that works. Probably just a checkmark somewhere that isn't supposed to be. Has anyone been in there messing with it? Good luck.
Michael
MBP 2.16 & 20" iMac Core Duo Mac OS X (10.4.5) Large Windows network & Canon DSLRs

ERROR: Wi-Fi has the self-assigned IP address

I'm having an issue with both my MacBook Pros at my home. If I try to connect to the Time Capsule after coming home from work, I receive the exclamation point in my wifi status icon and this error message in my network preferences pane:
"Wi-Fi has the self-assigned IP address 169.254.121.202 and will not be able to connect to the Internet."
The IP address is always different, but it always gives me a subnet mask of 255.255.0.0 and no Router IP.
This problem only seems to occur when both Macs are connecting and not connecting to the Time Capsule wifi. That is, when my girlfriend is out of town with her MBP gone, I never seem to have the issue.
It also seems like the first of our two to connect is the "winner" and will connect just fine, but the second one will not. If both computers are open and waiting to connect while we power cycle the Time Capsule, it will connect without any problem. If I then leave for work, come back home, try to connect, we have to start the same song and dance all over again.
I've tried just renewing the IP. I've tried restoring the factory settings on the Time Capsule.
I have a sneaking suspicion this may have something to do with the problem: My MBP is a 3rd generation copy of the data from hers. Hers was once my MBP, but we copied everything from it to a new MBP, which later was copied to a third MBP (the one I'm using now).
Thanks for any help anyone can provide!
Lou

I have a sneaking suspicion this may have something to do with the problem: My MBP is a 3rd generation copy of the data from hers. Hers was once my MBP, but we copied everything from it to a new MBP, which later was copied to a third MBP (the one I'm using now).
Thanks for any help anyone can provide!
Lou
That is interesting idea.. although the MAC address will be different I wonder if something in the GUID of the install being identical could cause issues..
Do both laptops have the same wireless cards?? Different models came with different cards. .these can not cooperate very well.. although I have seldom heard of them fighting in quite that way.
If you want to take the trouble.. a replacement hard drive and a new install of the OS.. see if it still happens.. how hard do you want to pursue it.
Check the log in the TC for when you try to connect.. and see if there is a reason given for not accepting you. Did you change the laptop network name.. ie they don't both have the same name do they.. it would not work if that was the case.

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 redux

I am getting the "Self Assigned IP Address" in my Airport connection and I can't troubleshoot the problem.
Here's my setup and what I have been looking to accomplish..
I have an iMac G5 with a built-in Airport Extreme card running Leopard 10.5.3. I have created a network to provide my AppleTV and my work laptop with access to the internet. I've turned Internet sharing on, and have security set to a the WEP 128 key..
Recently I had to exchange my AppleTV for a new one, and during the 2 weeks I was without AppleTV - something has changed (and as I think through the issue, I'm not certain about when the last time I played youtube or purchased content - maybe the new appleTV doesn't have anything to do with it, and it was a software upgrade), as I am no longer able to access YouTube content or the iTunes Music store to authorize my purchased content or to purchase new music/movies. However, I am able to watch movie trailers, and preview songs. It connects to the network fine, shows a strong signal, but something isn't quite right.
I've performed about every known solution to the AppleTV problem, and have an open post over in the AppleTV area, but in tracking down my issue, I see that my Airport connection is showing that it has a "self-assigned IP Address" and my not be able to connect to the internet. My thoughs are that if i get the self-assigned IP address problem solved, I'll solve the ITMS/YouTube issue on the AppleTV.
My internet connection is via Verizon DSL, with a DSL modem, connected directly to my iMac with an ethernet cable. (no external router/firewall)
I find it interesting that I can watch trailers, preview music from ITMS with the 'Self-assigned IP' but not access ITMS for purchases, etc.
I do not have any expertise in networking and for the most part am just following what posts I've seen out there suggest to try - trashing the com.apple.airport.pref's - restarting in 'Safe' mode, etc. Rebuilding the network connections from scratch, etc. Repairing Keychain access, disabling the built in firewall, etc. Just can't get by this issue.
Anyone with any thoughts?

hey guys...I found the problem...it helped me very much just try to change the wireless mode from 11bgn mixed to 11bg mixed...do this from router settings . . .I guess this will help you

Can't connect to internet..self assigned ip address problem with DSL Modem

I've run into this before, without resolution, and now again on a friend's iMac. Time to ask around...
Basically, everything appears to be assigned and configured perfectly, but the network status always shows, "...you have a self assigned IP address and may not be able to connect to the internet". Sure can't connect to the net when it says that.
I've gone thru the procedure advise before that details the sequence of events needed to insure the modem resets and recognizes the Mac and it's incoming DSL (sbcglobal) signal. The order of network priority is set properly by dragging built in ethernet to the top of the list. Modem was powered down, plugged in, and then connected to the Mac, but no solution. Any ideas? thanks

This continues to be a mystery. I've had my powerbook on several networks, and connection has, most of the time, been an automatic process. Additionally, I've installed new systems for people with the same isp, and all has been well. So easy is the process, it's never been an issue. However, following explicit procedural instructions (including powering the Mac down), has proven unsuccessful on 2 different occasions.
There is little help with the isp support in India, which is where the call routes too.
The only thing I have not done is to swap out the cable at one of the locations, but the other location, which has the same issue, works fine on the iMac there. Only when I connect my Powerbook to the modem, does the "...self assigned ip address...not be able to connect to the internet" appear.
I just keep thinking there has got to be a small detail that is being overlooked.

"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 partial SOLUTION

Hello there, dealing with the nasty issue of "self assigned IP address" has been my latest two days nightmare, I tried lots and lots of solutions I read in forums here and there without getting to a point.
I started this post because I want to post here a solution that really worked for me and I haven't seen it posted over the web.
I don't remember where but I saw the comment that WEP encryption by the router is not very mac compatible as opposed to WPA. So a while ago when I entered my router home screen (Thomson TG585 v7) I saw the option to enable WPA-PSK encryption and went for it, I can tell you it inmediatelly solved my conection issues and till now it's working perfectly.
I'm not any mac/web guru but I want to share this tip with all of you because I know it can be a really nasty problem that one of the gat dam "self assigned IP address" and this may help somebody else. ;-)
Best regards
Luis Erantzcani

Hello, thanks for the tip/post, & a warm welcome to the forums!

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

MBP Self Assigning IP Address on one router only

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