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How to fix “self-assigned ip address” issue on mac.

Ava

  • The self-assigned IP address error occurs when your Mac assigns itself an IP address instead of getting one from the router.
  • This usually happens due to network configuration issues, DHCP server problems, glitches in the firewall settings, unstable Wi-Fi connection, etc.
  • To fix the “self-assigned IP address” error on your Mac, renew DHCP lease, restart your network devices , rejoin your Wi-Fi , or check your network settings . 

Is your MacBook struggling to access the internet, though your Wi-Fi or Ethernet works fine? This can be due to the self-assigned IP address error on your Mac. Worry not!

Here, I’ll share how to fix the internet not working due to a self-assigned IP address error on your Mac to regain a stable network connection. But before we jump into the troubleshooting steps, let’s understand what a self-assigned IP error is.

What does “self-assigned IP address” mean on Mac? 

The “self-assigned IP address” error on Mac refers to a situation where your device assigns an IP address and sets up an ad-hoc network instead of obtaining one from the network router or DHCP (Dynamic Host Configuration Protocol) server.

This self-assigned IP address is not legitimate or acknowledged on the network. That’s why your Mac cannot connect to the internet or other devices on the network, resulting in limited or no network connectivity.

This issue occurs due to several reasons such as:

  • Network configuration conflicts
  • DHCP server unavailability
  • Problems with Mac’s network
  • Unstable Wi-Fi connection
  • Wrong Firewall settings
  • Outdated macOS

But you can fix the issue with a few simple methods. Let’s learn them!

How to fix “self-assigned IP address” error on Mac

There are 12 ways to fix the problem, from simple checks to more advanced changes. It would help if you tried them in the order provided.

  • Check your connection
  • Reboot your network devices
  • Renew DHCP Lease on macOS
  • Rejoin your Wi-Fi network
  • Check your connection settings
  • Reset your Network Preferences on Mac
  • Create a new network location
  • Reset the Firewall on your Mac
  • Set Service Order from Mac’s network settings
  • Change DNS Servers on macOS
  • Check for conflicting IP address
  • Disable VPN

1. Check your connection

Before diving into Mac-specific settings, ensure that your router is functioning correctly and located near your Mac to obtain a valid IP address. Besides, if you are using an Ethernet connection, plug in the cable snugly.  

I also check to validate that the cable has no fault and is in good condition. Moreover, If you are using an old Wi-Fi router, discard it and get a new one to obtain a smoother connection.

2. Reboot your network devices

Restarting both your modem and router can often resolve temporary network glitches. Power off the devices, unplug the cables, and wait a few seconds. It will help them cool down, as excessive heat can cause malfunctions.

After that, plug all cables, connect them to the power outlet, and turn them back on. In the meantime, restart your Mac once to iron out any bugs in macOS.   

  • Click the Apple logo .

Just click the Apple logo → choose Restart on your Mac

3. Renew DHCP Lease on macOS

This method is effective when the assigned IP address may have expired or encountered conflicts. When you renew the DHCP Lease, your Mac requests a new IP address from the DHCP server. It ensures a valid configuration and resolves connectivity issues.  

  • Open the same TCP/IP tab window from Wi-Fi Details, as shown above. 

click tcp/ip, select renew dhcp lease in wi-fi settings

After renewing the lease, check if you can connect to your network. If that doesn’t help, try creating a New Network Location and renewing the lease.

4. Rejoin your Wi-Fi network

Sometimes, simply forgetting and rejoining your Wi-Fi network can solve the self-assigned IP address error on your Mac.   

Click Apple logo, System Settings

  • Turn off Wi-Fi for a few seconds and toggle it on.

click connect in wi-fi on mac

5. Check your connection settings

Verify that your Mac’s network settings are configured correctly. You must opt for the appropriate network settings to obtain IP addresses and DNS information automatically. 

  • Go to your Wi-Fi Details .  I have shown the steps above.  
  • Select TCP/IP from the left panel. 

click tcp/ip, select using dhcp in configure ipv4, select automatic in configure ipv6 in wi-fi settings

You may also try turning off the IPv6, as some users reported it conflicted with the IP address assigning procedure.

  • Click on the drop-down arrow beside Configure IPv6 . 

select dropdown beside configure ipv6, click link local only in wi-fi settings

6. Reset your Network Preferences on Mac 

Resetting the network preferences can help eliminate IP address misconfiguration, causing the internet to not work. So, you must delete specific network connectivity-related files from your MacBook.

  • Launch  Finder .

Go to Folder to clear cache

  • Enter your Mac password to authenticate the deletion.
  • Restart your Mac. It will automatically recreate the deleted files.
  • Log in and connect to your Wi-Fi network.
  • Go to the  TCP/IP  setting again and check the router files.

7. Create a new network location

Creating a new network location lets your Mac start fresh with network settings and eliminate a self-assigned IP address.  

  • Click the  Apple logo →  System Settings .

Click the three-dots icon

  • Wait for a few seconds until your Mac connects to your Wi-Fi.

Repeat the steps of renewing the DHCP lease on your Mac, and then try connecting to your network.

When you try to perform configuration changes to the system, your Mac’s firewall experiences configuration issues. Let’s fix this problem by resetting the Firewall.

8. Reset the Firewall on your Mac

  • In the menu bar, click  Go  → Go to   Folder .

go to library preferences folder on mac

  • Restart your Mac.

After your system boots, it’ll ask you to allow access to numerous programs and services. Enable access depending upon your choice. Then, try connecting to your network and check if the self-assigned IP address error persists.

If you are unsure about deleting the Firewall files, you may temporarily disable it. Toggling off the Firewall on your Mac can help determine if it’s causing conflicts with network connectivity.

  • Select  Network  from the left panel → Choose Firewall .

Turn off your Mac Firewall

  • Restart your Mac and turn it on again.

9. Set Service Order from Mac’s network settings 

Adjusting the service order can prioritize the network interface, ensuring your Mac connects to your preferred network. 

  • Click the  Apple logo →  System Settings →  Network .

click set service order in network settings

10. Change DNS Servers on macOS

Discarding existing DNS and switching to alternative DNS servers can resolve DNS-related issues that may contribute to the self-assigned IP address error.  

  • Open System Settings → Wi-Fi → Click Details beside your Wi-Fi name.

select dns, click plus sign in wi-fi settings

  • Add   these numbers: 8.8.8.8 8.8.4.4 1.1.1.1 9.9.9.9

add dns addresses, click ok in wi-fi settings

11. Check for conflicting IP address 

Ensure that no other devices on your network use the same IP address as your Mac. Check your router’s DHCP client list and verify that all devices have unique IP addresses assigned.

12. Disable VPN 

If you have a VPN service enabled, disable it temporarily to see if it resolves the self-assigned IP address error. Open your Mac’s VPN settings and turn off the VPN connection. 

Bonus fixes 

You may need to attempt more complex fixes if the troubleshooting techniques outlined above do not fix the self-assigned IP address problem on your Mac:

  • Update your Mac to the latest OS version.
  • Verify your Mac is not infected with any malware or viruses. 
  • Ensure your network devices are operating well and there are no hardware problems. 
  • Restart your router or modem
  • Reset NVRAM or PRAM on Mac to clear up the system settings memory. 

Tips to prevent self-assigned IP address issues on Mac

Self-assigned IP address error is indeed frustrating as it prevents your Mac from accessing the internet. So, you must take some precautions to avoid such a nuisance in the future.

  • Regularly update your Mac
  • Try to restart your Mac, router, or other network devices once in a while
  • If your router or modem is outdated, replace it with a new one to get optimal performance. Also, configure the network with high-quality equipment.
  • Connect your Mac to only one active network. I suggest using an ethernet cable for a stable connection.
  • Don’t connect too many devices to your Wi-Fi at a time, as it may create network overcrowding.

Get back your smooth internet access!

Encountering a self-assigned IP address error on your Mac hampers your work, so you should address it ASAP. You can tackle the issue and restore a stable and reliable network connection using these troubleshooting techniques. 

If the problem isn’t resolved, contact Apple Support and seek assistance.

Explore more…

  • MacBook connects to Wi-Fi but has no Internet? 12 Fixes  
  • Wi-Fi not working on Mac? 10 Ways to fix!  
  • How to Run Wi-Fi Diagnostics on Mac for Better Network Connections  
  • How to fix IP address conflict on Mac: Simple solutions to fix it!

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[SOLVED]   Ethernet has a self assigned IP address/DHCP ?

  • Thread starter charliespies
  • Start date Sep 18, 2021

charliespies

charliespies

  • Sep 18, 2021

House has been wired with Cat5e, was meant to use Cat6. Now NBN is connected we are trying to sought out issue with house network, I am trying to connect my iMac El Captain desktop via ethernet cable. I can connect through wifi. (Also trying to connect Sony Smart Tv.) I have connected my iMac to NBN and modem directly with ethernet cable, upstairs in comms room. When I take desktop downstairs and try and connect via ethernet cables I can not get a connection. I have tried renew DHCP lease for ethernet connection and I have the error " Ethernet has a self assigned IP address and will not be able to connect to the internet" In the ares that I am trying to connect there is a RJ12 coming out of the wall with the the other end being RJ45 going into a switch. The ethernet cable is coming out of the switch and into my computer. Lights are "on" on the switch for the cable going into my computer and rj45. NBN - Modem - ethernet cable into wall to downstairs - rj12 - rj45 - switch - ethernet cable - imac Spent most of the days trouble shooting with service provider. Cablers said we needed a second modem where we have placed the switch, and that they would return a swap the rj12 jack over to ethernet jack. Went to purchase modem and was told by sales that we need a switch instead. So I take it the DHCP is not making it through the ethernet cable? Any manual work around? Is it a problem that cables are cat5e not 6?  

rj12 is telephone lines not data. Cables that have rj12-rj45 are mostly used for a DSL modem connection not to connect to ethernet. Your best bet is to pull the rj12 jacks and replace them with rj45. Getting the proper wire pairs and colors on the correct pins is key to making ethernet work. Telephone doesn' t care as much. If the cable is really cat5e it will work fine cat6 provides no benifit. When you get the correct jacks you should see a light on your switch when it is plugged into the modem. Note if the device you call a modem is really just a modem and not a modem/router you can only plug 1 device into it so a switch will not be of much use.

rj12 is telephone lines not data. Cables that have rj12-rj45 are mostly used for a DSL modem connection not to connect to ethernet. Your best bet is to pull the rj12 jacks and replace them with rj45. Getting the proper wire pairs and colors on the correct pins is key to making ethernet work. Telephone doesn' t care as much. If the cable is really cat5e it will work fine cat6 provides no benifit. When you get the correct jacks you should see a light on your switch when it is plugged into the modem. Note if the device you call a modem is really just a modem and not a modem/router you can only plug 1 device into it so a switch will not be of much use.  

  • Sep 20, 2021

Thank you for your response. Yes old tech had installed a plate with 5 ethernet/1 telephone. The modem upstairs is router/modem. It has 4 ethernet ports. One ethernet comes downstairs into the back of the rj12, and one goes direct into another room downstairs. New techs did say to plug rj12/rj45 from plate into a second modem, so that make sense. New tech where also meant to come back and swap the plate rj12 for a rj45. Is there anything else we can do? Can we change the rj12 on the plate? As still waiting to hear back from tech?  

  • Sep 21, 2021

As long as the wire really is ethernet cable it is very easy to swap the wires. You just remove the wires from the rj12 likely trim off a small amounts and punch them into the rj45 keystone matching the wires to color pattern on the side. Many home improvement stores sell rj45 keystones and many of these do not need special tools to install.  

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ethernet has self assigned ip address

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Determining the self-assigned IP address of a directly-connected counterpart

I have connected two computers, A and B, NIC-to-NIC using an ethernet cable. They have self-assigned their IP addresses—at least, I can see that A has done so, so I infer that B must have also done so. Computer A is a laptop running Windows 10, but I have no keyboard and mouse available for B. From A, how can I determine B's IP address?

On A, this is what I see:

What I've tried (based on https://serverfault.com/a/30742 ):

...which just says "Host is up" and doesn't report anybody else being on the network. I don't claim to understand what nmap is doing (for example, I have no idea what's special about the number 24) but I do know that the same command with 192.168.1.0/24 successfully finds devices on the wireless network to which A is also attached.

jez's user avatar

for example, I have no idea what's special about the number 24

It's a short way of writing the "255.255.255.0" netmask. (Also called "CIDR syntax" from its origins, or "prefix length" because it indicates that the network is specified by the first 24 bits. If you convert 255.255.255.0 from decimal to binary, you'll see it begins with exactly 24 'one' bits.)

However, your actual netmask is not 255.255.255.0 – it's 255.255.0.0, as shown in the ifconfig output. That's a /16. The whole "self-assigned" range is in fact 169.254.0.0/16.

Hosts will send out a few ARP probes as part of the self-assignment process (to ensure that the address isn't already in use). If you connect the computers while Wireshark or tcpdump is already running a capture on the Ethernet interface, you should see both of them revealing their addresses this way.

u1686_grawity's user avatar

  • Relative to everything else I had so far stumbled across, this is a stunningly intelligible explanation of the /24 - thanks. So I conclude that nmap -sn 169.254.0.0/16 would be the way to go. I actually managed the equivalent of that in the end by adapting one of the nmap --help examples to nmap -sn 169.254.0-255.0-255 and found the IP by letting it run for 45 minutes. In future I'll bear in mind the tcpdump tip. I presume there's no way of unilaterally configuring A to say "hey, let's self assign, but with a 24-bit prefix"? That would make it a lot quicker to find... –  jez Apr 1, 2021 at 15:39
  • No, this autoconf mechanism (APIPA) is defined to always use this specific /16 prefix. However, the idea was that it would be accompanied by other Zeroconf services such as mDNS for dynamic discovery. (For example, Windows has mDNS and a few similar alternatives, so as long as both computers run Windows and have the network mode set to “private” you should be able to reach the other computer by its name without needing the exact address. Same goes for macOS and (to some extent) Linux.) –  u1686_grawity Apr 1, 2021 at 16:18
  • But to answer the question, if you specifically wanted to change the prefix, you would have to run DHCP in order to do that instead of relying on autoconf. (And once you have DHCP you no longer need nmap nor tcpdump, as you can just look in the DHCP server’s “lease” table to find the address...) –  u1686_grawity Apr 1, 2021 at 16:22

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ethernet has self assigned ip address

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What is Self-Assigned IP and How to Fix it

ethernet has self assigned ip address

The self-assigned IP error may prevent your Mac from connecting to the Internet. You may get an Internet connection error messages such as “Wi-Fi has the self-assigned IP address and will not be able to connect to the Internet.” If you investigate this issue further, you will see that the Network pane in System Preferences will also show a notification message saying “Self-Assigned IP” with a yellow dot instead of the regular “Connected” message under the network service, as you can see in the screenshot below. This problem may occur when Mac is connected to a wired, wireless (Wi-Fi), or hotspot connection.

Self-Assigned IP message in Network Settings

This problem occurs when a self-assigned IP address is issued to network interfaces. When this issue happens, not all computers connected to the same network may be affected. For example, in the same home, one Mac may have this problem while other similarly configured Macs may have no problem at all, even though they all are using the same Wi-Fi connection. This may mean that the root of the problem is how the problem Mac is configured. Several factors may cause this issue, such as:

  • Bad cable connections.
  • Not getting an IP from the router or modem.
  • Failure of the DHCP server.

Follow the steps below to address this problem. Please try the steps in this order. After trying each step, check to see if your problem is fixed. If it is not fixed and if you still see the Self-Assigned IP error, move to the next step.

Self-Assigned error troubleshooting steps

Check your router/modem : If you are connected over Wi-Fi, ensure that your Mac is not too far away from the router/modem.

Restart your router/modem and your Mac : You can do this easily. Simply disconnect the power cable to your router/modem. Wait 30 seconds. Then reconnect. Then restart your Mac. Click the Apple  menu and select Restart .

Renew DHCP Lease : On your Mac, open System Preferences and click on Network . Select the network service you want to connect to (e.g., Wi-Fi or Ethernet) and click on Advanced . This will open a new window. Select the TCP/IP tab and click the Renew DHCP Lease . Then click OK .

Renew DHCP Lease button

Check your connection settings : On your Mac, go to System Preferences > Network . Then select the network that shows this error and click Advanced . Select the TCP/IP tab and then make sure that “Configure IPv4” and “Configure IPv6” are set to Using DHCP and Automatically , respectively.

DHCP settings page

Then click on the DNS tab, and delete any DNS servers that are listed there. Select them one by one and click on the minus button to remove them. Do not forget to click OK and Apply when you are done.

Create a new network location : On your Mac, open System Preferences and Network . Open the Location drop-down menu and select Edit Locations . Click the plus (+) button and add a new location, give it a name and click Done . Now you have two locations: Automatic and your new location. Select this new location and then click Apply .

Network Locations

Now, we will add a new Wi-Fi or Ethernet service, whichever you are using. Click the plus (+) sign under the network services on the left, select the Interface (Wi-Fi, Ethernet, etc.) and name it, then click Create . Then click Apply .

New network create screen

Now select the Self-Assigned IP network and then click the minus (-) button to delete it. Then click Apply . Does this newly created service connect?

Reset the system firewall: We can do that by deleting its preference file . Open a Finder window and then click Go and Go to Folder from the top menu bar. Enter /Library/Preferences/ and click Go .

Preferences

Once the Preferences folder is open, find the com.apple.alf.plist file. Delete this file (or place it on your Desktop; if you are not happy with what happens, you can put it back). Then restart your Mac.

Firewall Preference file

Related articles

  • How To Reset Network Settings On Mac
  • How To Use Network Utility on Mac
  • Mac Wi-Fi Connected But No Internet Access
  • iPhone Will Not Connect To A Known Wi-Fi Network, Fix

ethernet has self assigned ip address

Dr. Serhat Kurt worked as a Senior Technology Director specializing in Apple solutions for small and medium-sized educational institutions. He holds a doctoral degree (or doctorate) from the University of Illinois at Urbana / Champaign and a master’s degree from Purdue University. He is a former faculty member. Here is his LinkedIn profile and Google Scholar profile . Email Serhat Kurt .

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How To Fix Internet Not Working Due To Self-Assigned IP Address Issue

ethernet has self assigned ip address

If your Mac is connected to a working Wi-Fi network but the Internet is still not working, then we have got the solution for you. A lot of times your Mac is issued a self-assigned IP, which causes the Internet to not work on the machine.

Despite the same Wi-Fi network working on other devices, the Mac will simply show no internet connection error and Internet will not work on it. In these situations Wi-Fi has the self-assigned IP address and will not connect to the Internet despite the Internet working on other devices.

On Mac’s Wi-Fi page the Wi-Fi will also show the Self-Assigned IP Address text instead of connected. This is a very annoying problem that can cause Internet to not work on your Mac. Not having a working Internet connection on your Mac due to Mac’s self assigned IP problem can prevent you for doing work and render your Mac useless.

Good thing is self-assigned IP issue on Mac is quite easy to solve. You can fix the self-assigned IP address issue and get the Internet to work again on your Mac by simply deleting a few files on your machine.

Simply follow the steps below from an administrator account and put the mentioned files in trash.

This solution works on all recent versions of macOS including macOS Ventura, macOS Monterey, macOS Big Sur and macOS Catalina.

Fix Self-Assigned IP Address Issue on Mac

You can use to solve the self-assigned IP address issue on your Mac running macOS Ventura, macOS Monterey, macOS Big Sur, macOS Catalina etc.

1. On your Mac launch finder and click on Macintosh HD. (Don’t see Macintosh HD? See here )

2. Click on the Library folder and go to Preferences.

3. Now click on the SystemConfiguration folder.

4. Next put the following files in trash.

  • com.apple.airport.preferences.plist
  • com.apple.network.identification.plist
  • NetworkInterfaces.plist

5. Restart your Mac.

Once the reboot has taken place the Internet will start working and self assigned IP address issue will be resolved.

If you don’t see all the files mentioned above, then just delete the ones that are present and reboot your machine.

How to Reset Mac’s IP address

In case you’re looking to reset your Mac’s IP address to solve internet connection problems with your computer, then the following instructions will help. If deleting the files mentioned above does not help, then the steps to reset Mac IP address can also prove helpful in fixing self-assigned IP Mac problem.

On macOS Ventura or later

Below you can find instructions on how to reset Mac IP address if you are running macOS Ventura or later.

1. Click on the Apple logo from the top menu bar and then click on System Settings .

2. Now click on Wi-Fi option from the side pane.

3. Make sure your Mac is connected to your Wi-Fi network. Then click on ‘ Details… ‘ located next to Wi-Fi’s name.

4. Now click on TCP/IP button from the left side pane.

5. Next find the ‘ Renew DHCP Lease ‘ button on the right side of the window and click on it.

6. Click on OK button and using the toggle next to Wi-Fi turn off Wi-Fi and turn it back on after a few seconds.

By performing these steps you should be able to solve self-assigned IP issue on your Mac and Internet should start working once again.

On macOS Monterey or earlier

Here’s how you can reset Mac IP address if you are running macOS Monterey or earlier on your Mac.

1. On your Mac open System Preferences.

2. Click on Network icon.

3. Make sure Wi-Fi is selected from the side pane and then click on ‘Advanced’ button.

4. Now click on TCP/IP from the top navigation bar.

5. Next click on ‘Renew DHCP Lease’ button.

6. Click OK to exit and from the top menu click on the Wi-Fi button and turn off Wi-Fi.

7. After a few seconds turn Wi-Fi back on and connect your Mac to your Wi-Fi network.

8. At this point Self-Assigned IP address issue should get solved and Internet should start working again.

There you have it, this is how you can easily and quickly fix Self-Assigned IP address issue on Mac and get your Internet connection working once again. If you have any questions regarding this tutorial, then feel free to let us know in the comments section below.

  • troubleshooting

ethernet has self assigned ip address

Hello I recently instakked BIG SUR on my late 2013 macbook pro and I am having trouble tethering my Iphone XR to it. I can tether using wifi, but when I attempt to tether using bluetooth, my phone shows as connected in bluetooth preferences on my macbook and iphone, with the connection/link symbol shown on my iphone, but the internet will not work. In Network the bluetooth Pan shows an orange dot, STATUS: CONNECTED, but underneath it says ‘internet-not-working-self-assigned-ip-address-issue’. Do you have any ideas on how to fix this, I followed your instructions from the link ( https://ioshacker.com/how-to/fix-internet-not-working-self-assigned-ip-address-issue ) on your website, but each time I restart the computer the files that I put into the trash and delete from the trash re-appear in the system configuration folder. Only 2 of the 3 files you suggested to trash are in the folder, – com.apple.network.identification.plist – is not in the folder. Any advice appreciated.

I’m running Monterrey on my MacBook Pro and was having problem with the self-assigned IP and cannot connect to the Internet. I followed what your article suggested, several times, but was still unable to resolve the problem. Are there other suggestions that you think I should try? Thank you.

I just had the same issue and none of the fixes found online worked. I have McAfee Security software installed and there was a service running called McAfeeSystemExtensions. I deactivated the service within the Network settings and problem resolved.

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Self-Assigned IP Address Error on Mac: How to Fix?

By: Waseem Patwegar | November 15, 2022

If Wi-Fi or Ethernet is not working on your MacBook due to “Self-Assigned IP Address” error, you can find below the steps to restore network connectivity on your Mac.

Self Assigned IP Address On Mac

Self-Assigned IP Address on Mac

In a typical case of this nature, the MacBook appears to be connected to the Network (WiFi or Ethernet), but it fails to load webpages and comes up with “Self-Assigned IP” error.

As indicated by the wordings (Self-Assigned IP Address), the reason for this problem is due to your Mac Assigning itself an IP Address that is not valid or not recognized on the network.

Luckily, in most cases the problem of No Internet connectivity due to “Self-Assigned IP Address” can be fixed by rebooting the modem.

1. Power Cycle Modem/Router

Before going ahead with other methods, simply disconnect the Modem/Router from its power supply source > wait for 60 seconds and reconnect the Modem/Router back to its power supply.

After this, you should find internet working properly on your Mac, as it starts using a valid IP Address on both WiFi and Ethernet to connect to the network.

2. Renew DHCP Lease

1. Click on Apple Logo in the top menu-bar and select System Preferences… in the drop-down menu.

Open System Preferences on Mac

2. On System Preferences screen, click on the Network Icon.

Network Option in System Preferences Screen on Mac

3. On Network screen, select your Network ( Ethernet or WiFi ) in the side-menu and click on Advanced .

Advanced Option in Network Settings Screen on Mac

4. On the next screen, switch to TCP/IP tab and click on Renew DHCP Lease button.

Renew DHCP Lease Option on Mac

5. Click on OK to save the revised settings.

After the DHCP lease is renewed, you should be able to connect to internet

3. Delete PLIST Files

The problem of No Internet on Mac due to Self-assigned IP Address can be fixed by removing certain files related to network connectivity on your computer.

1. Click on the Finder Icon in taskbar > click on the Go tab in top-menu bar and select Go to Folder option in the drop-down menu.

Open Go to Folder on Mac

2. In Go-to window, Type /Library/Preferences/SystemConfiguration/ and click on the Go button.

Go to /Library/Preferences/SystemConfiguration/ Folder on Mac

4. In System Configuration folder, delete the following folders (right-click on the Folders and move them to trash).

  • com.apple.airport.preferences.plist
  • com.apple.network.identification.plist
  • NetworkInterfaces.plist
  • Preferences.plist

Note: Your Mac will automatically recreate above Folders when it restarts.

5. Shutdown the MacBook > Wait for 30 seconds and Restart the Mac again and see if you can now connect to the internet.

4. Set Service Order

Make sure that your MacBook is always connecting to your preferred network type (WiFi or Ethernet).

1. Click on Apple Logo > System Preferences > Network > On the Network screen, click on the Gear icon and select Set Service Order option in the drop-down menu.

Set Service Order Tab on Mac Network Settings Screen

2. On Service Order window, drag your preferred Network (WiFi or Ethermet) to the top position.

Choose Preferred Network Type on Mac

3. Once you are done, click on OK to save the changes.

5. Create New Network Location

If you are still unable to connect to Internet, create a New Network Location on your Mac and renew its DCHP lease.

1. Click on Apple Logo > System Preferences > Network > On the Network screen, open the Location menu and select Edit Locations option.

Edit Network Locations on Mac

2. On the next screen, click on the Plus icon to Add New Location.

Add Network Location Option on Mac

3. On the next screen, type a Name for the New Network Location and click on Done .

Name New Network Location Option on Mac

4. After creating new location, select either WiFi or Ethernet in the side menu and click on Advanced .

5. On the next screen, switch to TCP/IP tab and click on Renew DHCP Lease .

6. Click on OK to save the new settings.

This should certainly fix “Self-Assigned IP Address problem and restore network connectivity on your Mac.

6. Switch to Google DNS

If your Mac is frequently struggling from Network connectivity issues, the problem might be due to the DNS Servers of your Internet Service provider being busy and clogged up.

To fix this issue, you can consider switching the DNS servers on your Mac to Google DNS or Open DNS.

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self assigned ip address mac

How to Fix the Self Assigned IP Address Issue on Mac

At times macOS users face the self-assigned IP address malfunction on their computer. Your Mac will keep alerting you to the ‘internet not working’ pop-up even if you have a Wi-Fi network connection.

It allows the network interface to make a malfunctioning ad-hoc network. There can be many reasons for network issues like a broken cable, DHCP server problem, network location, etc. But, it gets better if you know the correct way to troubleshoot the issue.

Table of Contents

Fixes for the self-assigned IP address issue

Self-assigned IP issues can frustrate users and cause internet issues. But, fret not, you can fix self-assigned IP address malfunction using any of the methods mentioned below:

  • Restart your modem

Before trying any other method to fix the internet issue restart your modem to see if it works. Click the ‘Wi-Fi’ button from the top menu on the Mac to turn it off. Please wait for a few minutes and then turn it back on. Check to see if the issue is fixed.

If this hack works, you will see the Wi-Fi connection running on your Mac with a proper IP address.

  • Re-enable the network preferences

ethernet has self assigned ip address

To reset network preferences on your computer, follow these steps:

  • Open Mac, launch ‘Finder,’ and in the top menu bar, tap on ‘Go to Folder’ from the drop-down menu of the ‘Go’ bar
  • A new window will appear, type ''/Library/Preferences/SystemConfiguration/'' and press enter
  • The System Configuration window will open. Then delete the following commands: ‘ com.apple .airport.preferences.plist, Networkinterface.plist and preferences.plist’ to reset network configurations
  • Please only delete the files if you have no issue losing the network configuration
  • Please switch off the Mac and then switch it back on; try and link to the Wi-Fi again
  • Open TCP/IP settings again and look for the files that you deleted
  • You will find the removed files back in the old folder

ethernet has self assigned ip address

  • Renew DHCP lease

One of the most common fixes to the ‘self-assigned IP issue’ is to renew the DHCP lease. A DHCP lease temporarily assigns an IP address to a device connected to the internet.

If the internet connection is malfunctioning, follow these steps to renew your DHCP lease:

  • Tap the Apple logo on the top-left menu bar, then visit the ‘System preferences’ section
  • Then click on ‘Network settings’ and click ‘Advanced’ in the Wi-Fi section
  • Then select the ‘TCP/IP’ section and tap on the ‘Renew DHCP lease’ button and select OK
  • After renewing the lease, check if you can connect to your Wi-Fi

ethernet has self assigned ip address

  • Make a different network location/ new location

One way to fix self-assigned IP is to set up new network locations on your Mac. Follow the steps below to make a new network location:

  • Tap on the Apple logo from the menu bar and select ‘System preferences’
  • Enter the ‘Network settings’ then tap on ‘Drop-down menu’ near the Location tab
  • Then tap on ‘Edit locations’ and tap on the ‘+’ button and add a ‘new network location’ and tap on done
  • Choose ‘Wi-Fi’ or Ethernet; if not selected automatically
  • Then press on ‘Advanced’ button and again press the ‘Renew DHCP lease button’ and enter
  • This will set a ‘new location’ on the device
  • Reset Firewall

Primarily self-assigned IP address malfunction occurs when the system’s Firewall undergoes configuration problems. If you have performed significant configuration changes on a Mac, settings may not migrate properly. It causes a Firewall issue and might disrupt the network connection.

To fix the firewall configuration issue, follow these steps:

  • Click the ‘Finder’ icon to launch it, then select ‘Go to folder’ in the ‘Go’ menu bar
  • In the pop-up window, enter the following command /Macintosh HD/Library/Preferences/
  • In the new window, delete the ‘com.apple.alf.plist’ command
  • After the Mac restarts, reboot it and check if the Wi-Fi connects

ethernet has self assigned ip address

Note that after the system boots, you would have to allow connections for the numerous programs temporarily. 

  • Setup the service order in network settings

If your Mac has a self-assigned IP address issue, try resetting the service order of Wi-Fi in the network settings.

To set ‘Service order’ on Mac, follow these steps:

  • Select the Apple logo on the screen and click ‘system preferences’
  • Click on ‘Network icon and then press on the gear icon
  • Then tap ‘Set service order,’ and drag the services you are using at the start of the file
  • For example, if you are utilizing Wi-Fi, select ‘Wi-Fi’ and put it on the first number

ethernet has self assigned ip address

  • Change DNS servers

DNS servers change the domain name to IP addresses. Try changing the DNS servers to see if the issue fixes. Follow these steps:

  • Select the Apple logo and click ‘system preferences,’ then click on the ‘Network’ icon
  • Select the Wi-Fi icon or Ethernet you use (if not selected already)
  • Then choose the ‘DNS’ tab in the ‘Advanced’ section and press ‘+.’
  • Add the following numbers to the DNS server list: ‘8.8.8.8, 8.8.4.4, 1.1.1.1, 9.9.9.9’ and click ‘OK’
  • It will most likely fix the self-assigned IP address problem in your Mac

ethernet has self assigned ip address

Contact an Apple support team tech. If the above methods do not fix your Mac’s self-assigned IP address issue.

What does self-assigned IP mean on Mac?

Self-assigned IP is one of the reasons why you are unable to use the internet on your device. It mainly occurs when your network router does not provide your device’s IP address, causing internet connection issues.

How do I give my Mac a static IP address?

You can give your Mac a static IP by following the steps below:

  • Select the Apple logo and click ‘System preferences’
  • Click on the ‘Network’ tab and then select the ‘Advanced button’ 
  • ON TCP/IP section, open the configure IPv4 list and select ‘manually’
  • Enter your IP settings in the field, and the static IP address will the assigned 

Conclusion 

By now, you must have learned how to fix self-assigned IP on your computer. Though it is not a huge problem, it does cause a lot of frustration among users. Hopefully, you found the article helpful and learned how to fix network malfunctions on your mac OS.

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Marid is a lifelong tech enthusiast and is the lead editor of Macdentro.com. An expert on all things Apple and a lifelong Mac user. Marid has over 10 years of experience using Apple products including the Apple watch, Ipad and etc

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BebopLondon

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

I've been successfully connecting to ethernet via a powerline adaptor (home plug) in my studio. The ethernet cable directly connects from a powerline adaptor to ethernet port on my MacBook Pro. and I was able to switch from wifi to ethernet easily.

I then tried connecting to ethernet via Belkin Thunderbolt Express Dock. Now ethernet has an orange indicator in 'network' and displays message that 'ethernet has self-assigned IP address and will not be able to connect to the internet'.

I tried to go back to directly connecting the ethernet cable into the ethernet port on MBP, but now I get the same message ''ethernet has self-assigned IP address and will not be able to connect to the internet'. I've tried to renew DHCP lease, but to no avail. Is this something to do with internet sharing? Please someone explain.

MacBook Pro 13″, macOS 10.13

Posted on May 30, 2020 3:22 PM

BDAqua

Posted on May 30, 2020 3:47 PM

Make a New Location, Using network locations in Mac OS X ...

http://support.apple.com/kb/HT2712

System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.

System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.

The interface that connects to the Internet should be dragged to the top of the list.

Sys Prefs>Network>highlight the Interface you're using>Advanced>TCP/IP>Configure IPv4: Using DHCP.

If using Wifi, instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.

System Preferences>Network>choose interface>Advanced>Proxies Tab, make sure none are set, like for HTTP & HTTPS.

System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...

Similar questions

  • Ethernet via Belkin Thunderbolt Express Wifi is working but Ethernet via Belkin Thunderbolt Express has a problem. In 'Network' I selected Broadcom NetXtreme Gigabit Ethernet Controller (Thunderbolt dock), which is marked 'orange' and 'Connected' but with message "Broadcom NetXtreme Gigabit Ethernet Controller has a self-assigned IP address and will not be able to connect to the Internet." Broadcom is configured>IPv4>Using DHCP I selected Advance>Renew DHCP lease>tried with and without entering DHCP Client ID>but no change. MacBook Pro late 2011, High Sierra 10.13.6, Belkin Thunderbolt Express F4U055 Any suggestions please. 946 7
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  • Thunderbolt Ethernet has a self-assigned IP address and will not be able to connect to the Internet I've never understood this, happens completely at random after working fine for months.Usually, a combination of renewing the DHCP lease, trashing preferences, setting up a new location, restarting the router or switching passive FTP mode off would work. Not this time.I've even tried using a manual IP address from the router and a different cable. I get a green light but no connection.Utterly frustrating. Wireless works fine of course.Anybody got any ideas? Other than forgetting about ever having a stable Ethernet connection on a mac?OS Mojave 10.14MacBook Pro (retina, 2014)BT HomeHub 5TP-Link adapterTV connects fine. As does a MacMini. Just not the machine I use for work 12 hours a day.I think I may actually hate computers. 2900 9

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May 30, 2020 3:47 PM in response to BebopLondon

Jun 18, 2020 1:33 AM in response to BDAqua

Hi BDAqua, Success! The problem was with the room extenders (powerline adaptors). 15m ethernet cable directly linking the modem to MBP, or directly linking Belkin dock and modem solved problem. Thanks for your advice and interest Terri.

Jun 7, 2020 12:25 AM in response to BDAqua

Thanks for keeping in touch. I replied but thread went astray (maybe my mistake). Here's what I said " Jun 1, 2020 11:19 AM in response to BDAqua

Sorry for delay, have been trying to understand the problem. I have disconnected everything and now think that the culprit may be the Powerline extender. I plugged into the modem directly with just the MacBook Pro and can get ethernet, same with Belkin dock, but not in studio via Powerline extender. I have two other rooms using Powerline extender for TV and one in garden for security. All three work fine. I have swapped extenders to see if it is this particular extender but it is not. So it seems the computer suddenly will not work with an extender. I am now considering just using a retractable 15m ethernet cable (if I can find one) directly linking modem and MBP and by-passing Belkin dock.

Currently: I'm now awaiting delivery of extended ethernet cable (not retractable). Should be 11th June. I'll let you know what happens. Thanks again.

Jun 7, 2020 10:20 AM in response to BebopLondon

Ah, OK, keep us posted please. :)

That reply was in a different thread...

https://discussions.apple.com/thread/251405109

Jun 2, 2020 1:04 PM in response to BebopLondon

Any luck yet?

Jun 18, 2020 9:53 AM in response to BebopLondon

Thanks for the report! :)

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

  • Thread starter TheRealNick
  • Start date Jun 5, 2021
  • Sort by reaction score
  • Older macOS Versions
  • macOS Big Sur (11)

TheRealNick

TheRealNick

Macrumors member.

  • Jun 5, 2021

Screenshot 2021-06-05 at 09.41.26.png

mystery hill

Macrumors 6502a.

Have you tried manually setting the IP address instead of using DHCP?  

chrfr

macrumors G5

TheRealNick said: Big Sur is 11.1, Click to expand...
chrfr said: Not a guaranteed fix by any means, but I'd update to 11.4. There have been lots of bug fixes built into Big Sur between 11.1 and 11.4. Click to expand...

Does the ‘iPhone USB’ network also have the Location set to Automatic?  

dumiku

macrumors regular

TheRealNick said: So I regularly use my iPhone for internet access on my Mac. (Retina 5K, 27-inch Late 2015) I also plug in my Xbox through the ethernet port and share the connection. I've never really had an issue but yesterday I received the error "Ethernet has a self-assigned IP address and will not be able to connect to the internet..." I cannot seem to fix this. I tried plugging my laptop in instead of the Xbox and received the same message, so it is not just the Xbox. I also tried three different cables just to be sure it wasn't the cable, same message. Does anyone have any further ideas on how I can fix this? Big Sur is 11.1 11.4 and I don't know if its makes a difference but the iPhone is an XR running iOS 14.5.1 Many thanks! View attachment 1787215 View attachment 1787216 ​ Click to expand...
mystery hill said: Have you tried manually setting the IP address instead of using DHCP? Click to expand...

macrumors G4

The list on the left is a prioritized hierarchy of interfaces. The Mac will look for an internet connection beginning at the top interface and working down. Since you have an XBox at the top of the list that can’t provide internet access to your Mac, the message you see makes perfect sense. Drag iPhone USB above Ethernet and you should be fine.  

dumiku said: Did you try this, should be a temp fix, also try disconnecting your iPhone and connect it again? Click to expand...
mystery hill said: Does the ‘iPhone USB’ network also have the Location set to Automatic? Click to expand...
chabig said: The list on the left is a prioritized hierarchy of interfaces. The Mac will look for an internet connection beginning at the top interface and working down. Since you have an XBox at the top of the list that can’t provide internet access to your Mac, the message you see makes perfect sense. Drag iPhone USB above Ethernet and you should be fine. Click to expand...

Screenshot 2021-06-05 at 22.40.26.png

  • Jun 6, 2021
TheRealNick said: Thanks for your help, I have tried disconnecting and restarting a number of times with no luck. I'm not sure what address range I can use to set a manual address so I'm not sure how to go about doing it without conflicting with anything... or am I overthinking things here? Click to expand...

sgtaylor5

Contributor

Check your router or wireless access point: the DHCP function may not be working right. DHCP assigns IP addresses to downstream devices, like iPhones and Xboxes. If DHCP isn’t working, then your downstream devices will self-assign IP addresses. Try rebooting the router.  

diggy33

macrumors 65816

Have you tried just deleting the Ethernet adapter, and then add it back?  

Fishrrman

macrumors Penryn

I would POWER DOWN everything (completely off, not just "a restart"): - Macs - Router(s) - ISP interface/modem Then, RE-power, in order: 1. ISP interface/modem 2. Router(s) 3. Macs.  

macrumors newbie

  • Jun 9, 2021

Is there a solution to this? I'm also getting this error. Not coincidentally a spectrum guy came to my place last night and gave me a new modem.  

COMMENTS

  1. ethernet has a self-assigned ip address a…

    ethernet has a self-assigned ip address and cannot connect to the internet In my network settings under ethernet it says "Ethernet has a self-assigned IP address and will not be able to connect to the Internet." even though it says its connected. Late 2014 27" iMac Retina 5K 27-Inch, 3.5 GHz i5 Processor, 24GB Memory, AMD Radeon R9 M290X 2048 MB

  2. How to fix "self-assigned IP address" issue on Mac

    To fix the "self-assigned IP address" error on your Mac, renew DHCP lease, restart your network devices, rejoin your Wi-Fi, or check your network settings . Is your MacBook struggling to access the internet, though your Wi-Fi or Ethernet works fine? This can be due to the self-assigned IP address error on your Mac. Worry not!

  3. [SOLVED] Ethernet has a self assigned IP address/DHCP

    Sep 18, 2021 #1 House has been wired with Cat5e, was meant to use Cat6. Now NBN is connected we are trying to sought out issue with house network, I am trying to connect my iMac El Captain...

  4. windows

    1 I have connected two computers, A and B, NIC-to-NIC using an ethernet cable. They have self-assigned their IP addresses—at least, I can see that A has done so, so I infer that B must have also done so. Computer A is a laptop running Windows 10, but I have no keyboard and mouse available for B. From A, how can I determine B's IP address?

  5. network

    16 Cannot connect MacBook Pro (Retina, 15-inch, Mid 2015) (10.13.3) to the internet through my Apple USB Ethernet Adapter. I am receiving this error under System Preferences/Network: "Apple USB Ethernet Adapter has a self-assigned IP address and will not be able to connect to the Internet." IP Address: 169.254.59.248 Subnet Mask: 255.255..

  6. What is Self-Assigned IP and How to Fix it • macReports

    Check your connection settings: On your Mac, go to System Preferences > Network. Then select the network that shows this error and click Advanced. Select the TCP/IP tab and then make sure that "Configure IPv4" and "Configure IPv6" are set to Using DHCP and Automatically, respectively.

  7. How to fix "self-assigned IP address" error on Mac

    Select the network connected to the self-assigned IP address. Go to the "TCP/IP" tab and ensure that "Configure IPv4" is set to "Using DHCP" and "Configure IPv6" is set to "Automatically." Click on the "DNS" tab and delete the DNS servers listed there by tapping the minus button. Click "OK" to save the changes. 4.

  8. IP address over ethernet is self-assigned…

    Level 1 4 points IP address over ethernet is self-assigned when using a gigabit adapter Hi, I'm using a MacBook Air, M2, running Sonoma 14.1.2. It connects OK to the internet over Wi-Fi but cannot connect over ethernet when using a gigabit adapter in an outbuilding in the garden. This is the situation:

  9. How To Fix Internet Not Working Due To Self-Assigned IP Address Issue

    1. On your Mac launch finder and click on Macintosh HD. (Don't see Macintosh HD? See here) 2. Click on the Library folder and go to Preferences. 3. Now click on the SystemConfiguration folder. 4. Next put the following files in trash. com.apple.airport.preferences.plist com.apple.network.identification.plist

  10. What Is A Self Assigned IP Address And How To Fix This Mac Error

    Restart your Mac. Once you successfully reboot your Mac, the self-assigned IP address error should be resolved, and the internet should start working normally. However, if the issue persists, move on to the next solution. Reset Your Mac's IP Address

  11. "Ethernet has a self-assigned IP Address …

    It still comes back that Ethernet has a self-assigned IP address and will not be able to connect to the Internet. Can anyone please tell me why it is doing this when I assume it should not be self-assigning an IP address. Thanks.

  12. Self-Assigned IP Address Error on Mac: How to Fix?

    If Wi-Fi or Ethernet is not working on your MacBook due to "Self-Assigned IP Address" error, you can find below the steps to restore network connectivity on your Mac. Self-Assigned IP Address on Mac

  13. MacOS Monterey self assigned IP troubleshooting : r/MacOS

    dissociate from any current network by opening terminal and entering the command: "sudo /System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport -z" change the MAC address by entering a new MAC: "sudo ifconfig en0 lladdr xx:xx:xx:xx:xx:xx" where xx is a hex number

  14. How to Fix the Self Assigned IP Address Issue on Mac

    What does self-assigned IP mean on Mac? How do I give my Mac a static IP address? Conclusion Fixes for the self-assigned IP address issue Self-assigned IP issues can frustrate users and cause internet issues. But, fret not, you can fix self-assigned IP address malfunction using any of the methods mentioned below: Restart your modem

  15. How to fix issue

    Video showing how to fix issue - Self-Assigned IP address MacDetailed instructions - https://blog.pcrisk.com/mac/13307-fix-self-assigned-ip-address-issue-on-mac

  16. Thunderbolt Ethernet has a self-assigned …

    Thunderbolt Ethernet has a self-assigned IP address and will not be able to connect to the internet. I've been successfully connecting to ethernet via a powerline adaptor (home plug) in my studio. The ethernet cable directly connects from a powerline adaptor to ethernet port on my MacBook Pro. and I was able to switch from wifi to ethernet easily.

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

    Above is an example to get the real IP to use run the command below in the Terminal and look for en0,en1,en2,en3,en4 and check the one with an active status the IP address is the one you should use as a router address like I said above and increment the last set/number in the IP by 2 or 3 that's the IP you will assign to the Ethernet. normally ...

  18. wifi

    There is a yellow dot preceding the "Wi-Fi / Self-Assigned IP" icon on the far left of the System Preferences/ Network window. The Network Diagnostics shows all the items under Network Status as green. My modem does not have a router. It is behind a Verizon (ISP) router that I do not physically own or have access to.