Timecapsule has self assigned IP in Yosemite. What can I do?

My old airport died when I upgraded to mavericks. I got tired of using the ethernet cable and not being able to wirelessly use the printer so I bought a 2 TB time capsule with airport extreme. I've been trying to set it up but no matter what I do I keep getting a self assigned IP. I know the cable modem works because everything I go back to the ethernet cable I'm on the internet. But every time I try to go back to the WiFi network I get a self assigned IP. No matter what I do. I've redone everything. I've already tried removing the preferences plist files to rebuild them and I've created a new location with manual DNS and set the MTU manually to 1453. Nothing works. I really don't want to go into the terminal and refresh the discoveryd services.
What can I do? Did I just get a dud Timecapsule or is this a problem with a lot of people running Yosemite? So far there are no updates that clear this up and I have a $200 white brick in my living room.

THe TC has issues with some cable modem.. SB6121 and 6141 are particularly problematic.
We need to know what model cable modem you have and how you have TC setup.
Did you power down the modem for at least 20min maybe more if it won't work to lose the register MAC address of the device you previously plugged in.. this is required with every cable ISP.

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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.

I restarted my mac and many apps and files disappeared. It's like it booted to a state several months ago. My CS 5 apps are not in the dock or applications folder. Has this ever happened before and what can I do?

It's like it booted to a state it was in several months ago. My CS 5 apps are not in the dock or applications folder. Has this ever happened before and what can I do?
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Thanks for the obvious question. I mean it. The very same thought came to me this morning and, sure enough, I had booted into another drive--my old one that, of course, had the old desktop, etc.
It didn't dawn on me that this was the case since I hadn't set it as a boot drive but I guess in the course of all the restarts I did, it got switched.
I'm back to normal again.

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Airport has self-assigned IP address, authentication step fails

I am a computing consultant at a Pennsylvania university and am trying to configure the airport service on a 15" MacBook Pro (pre-unibody style ~2007) running 10.6.5.
We are trying to connect to a WPA2 Enterprise wireless network that requires username and password authentication before assigning an IP address. We configure Macs all the time here and they all work very well, in fact my own personal Macs haven't ever given me trouble. But the machine I'm working on at the moment just cannot obtain a correct IP address. We know for sure this is not a network or user account credential problem. It must be on the client computer side.
I have tried removing all old user profiles and certificates from the Keychain (our network grants a certificate automatically for new connections), I deleted preference files from the /Library/Preferences/SystemConfiguration folder, I have removed the Airport service from Network Connections, rebooted the machine and performed 3 PRAM resets just for good measure, re-added the Airport service and tried a fresh configuration. I also created and entirely different user account and tried configuring. The only thing I have not tried is reinstalling the OS which I'm really trying to avoid because I'd like to learn what is actually causing this problem. None of the above attempts have been successful.
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Something like one year ago or so, i had to reinstall the OS cuz i wasn't able to make the iPhone recognized over usb for the tethering conenction...
only AFTER i found out it was related to the OS booting in 64 bits, not just 32 and using the 64 capability for those programs who required it.
I had to deal with self assigned ip too, while sharing internet conenction from airport through ethernet to another mac, but i dunno if that should help you.

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?

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.
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When I came back to it, the battery was completely dead and the clock had reset to 1969.
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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.
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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
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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
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Airport has "self assigned ip", no connection to internet but network ok

This is weird... the internet connection was working OK on my G5 desktop yesterday, today it doesn't... my work computer I brought home connected fine a few days ago but now it doesn't, the MacBook Pro I am writing this question with is working fine (hope it holds on to the connection!), our 2 iPhones are connected too. In the network settings for airport it says "self assigned ip address". Thanks in advance for any tips to correct this issue. Is this a glitch in the latest system update?

I solved my problem by reinstalling 10.5.5 and not doing the updates to 10.5.7. I don't know for sure if it is the update to 10.5.7 or the airport updates that caused my problem.
I out my old drive back in my Macbook and I had wireless again. So I out my new drive in and did the reinstall and now it works. There is a conflict with either the 10.5.7 update or the Airport update.
APPLE REALLY NEES TO FIX THESE ISSUES. you can read about them all over the internet. Many have just updated to 5.7 and then they have a problem.
So archiving and reinstalling 5.5 solved my problem. My old drive has 5.6 and it works. If had a copy of 5.6 I would have used that.
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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.

Timecapsule has self assigned IP in Yosemite. What can I do?

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