What is Self-Assigned IP and How to Fix it
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.
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 .
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.
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 .
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 .
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 .
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.
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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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macOS User Guide
- What’s in the menu bar?
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- Change System Settings
- Choose your desktop wallpaper
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- What is iCloud?
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- Store files in iCloud Drive
- Share and collaborate on files and folders
- Manage iCloud storage
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- What is Family Sharing?
- Set up Family Sharing
- Set up Screen Time for a child
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Use DHCP or a manual IP address on Mac
An Internet Protocol (IP) address is a number that identifies each computer across the internet or a network. When you connect to the internet or an IP network, your computer needs an IP address.
Your IP address can be provided in two main ways:
Automatically: Your computer is assigned an address using Dynamic Host Configuration Protocol (DHCP).
Manually: Your ISP or network administrator gives you an IP address, and you enter it in Network settings.
Follow these steps to enter your IP address or have it assigned automatically.
Open Network settings for me
Click the network connection you want to use on the right, then click Details.
Click the Configure IPv4 pop-up menu, then choose an option:
If your address is assigned automatically, choose Using DHCP.
If your ISP or administrator gave you an IP address, choose Manually, then enter the address in the IP address field. If your ISP gave you additional information such as the subnet mask and router, enter those values in the labeled fields.
Note: Most IP addresses are IPv4 addresses, which look like a series of numbers separated by three periods, similar to this: 126.96.36.199. If you received an IP address that’s a longer series of numbers and letters, divided by seven colons (for example, fa80:0000:0000:0123:0203:93ee:ef5b:44a0), it’s a different type of IP address called IPv6. To enter an IPv6 address, click the Configure IPv6 pop-up menu, choose Manually, then enter your IPv6 address.
Press ESC to close
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
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
- 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
- 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
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
- 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: ‘188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168’ and click ‘OK’
- It will most likely fix the self-assigned IP address problem in your Mac
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
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.
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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How to Fix Self-assigned IP Address Error on Mac
The self-assigned IP address error on a MAC is a common issue when the device cannot obtain an IP address from the router or DHCP server. It can cause Internet connectivity problems and make it difficult to access local network resources.
In this article, you will learn the causes of this error and provide troubleshooting steps to resolve it.
What Does it Mean When It Says WiFi Has a Self-Assigned IP Address?
When a device says it has a “ self-assigned IP address ” on a WiFi network, it cannot obtain a valid IP address from the router. It can happen for various reasons, such as a conflict with another device on the network with the same IP address or an issue with the router’s DHCP (Dynamic Host Configuration Protocol) settings.
Without a valid IP address, the device cannot access the internet or communicate with other devices on the network. To fix this issue, try restarting the device and router, checking for firmware updates, or manually changing the IP address.
What Are The Reasons for Self-Assigned IP Address Errors?
Several reasons for a self-assigned IP address error can occur on a MAC . Some of the most common causes include:
- Incorrect network settings: The network settings on the MAC may be configured incorrectly, which can prevent it from obtaining an IP address from the router or DHCP server.
- DHCP server issues: The DHCP server may be down or not working properly, which can prevent the MAC from obtaining an IP address.
- Router issues: The router may malfunction or not be configured properly, which can prevent the MAC from obtaining an IP address.
- Malware or viruses: Malware can infect the MAC and cause it to assign itself an IP address, preventing it from connecting to the internet or local network resources.
Troubleshooting Steps to Fix a Self-Assigned IP Address Error on a Mac
To fix a self-assigned IP address error on a MAC , you can try the following troubleshooting steps:
- Check network connection: Ensure that the MAC is connected to the network and that the network cable is securely plugged in.
- Renew DHCP lease: Try renewing the DHCP lease on the MAC by going to the “ System Preferences ” > “ Network ” > “Select Network” >” Advanced ” > “ TCP/IP ” tab, then click on the “Renew DHCP Lease” button.
- Reset the router: Try resetting it by unplugging it for 30 seconds, then plugging it back in.
- Check for updates: Make sure the MAC runs the latest software updates.
- Disable VPN: If you are using a VPN, disable it and see if it helps.
- Check for conflicting IP addresses: Make sure that no other devices on the network use the same IP address as the MAC.
- Disable IPv6: Some users have reported disabling IPv6 on the MAC can fix the issue.
Some Bonus Fixes:
If the troubleshooting steps above do not resolve the self-assigned IP address error on your MAC , you may need to try some advanced solutions:
- Check for malware or viruses: Make sure that the MAC is not infected with malware or viruses which can cause this issue.
- Reinstall network adapter driver: Try reinstalling the network adapter driver on the MAC.
- Check for hardware issues: Make sure that the network adapter on the MAC is functioning properly and that there are no hardware issues.
- Reset NVRAM or PRAM: Try resetting the NVRAM or PRAM on the MAC.
- Contact technical support: If none of the above steps resolves the issue, contact technical support for further assistance.
It’s important to note that maintaining a stable network connection is crucial for the smooth operation of any device. A self-assigned IP address error can be a frustrating problem to deal with, but by following the steps outlined in this blog post, you should be able to resolve it quickly and get back to using your MAC as usual.
Additionally, it is always a good practice to keep your MAC updated, regularly check for malware and viruses, and ensure that the network adapter is working properly. It can help prevent self-assigned IP address errors and other network-related issues from occurring in the future.
How do I Fix the 169.254 IP Address on Mac?
If you’re experiencing an IP address of 169.254 on your Mac, your computer cannot obtain an IP address from your router. Various issues, such as a malfunctioning router or a conflict with another device on your network, can cause it.
To fix this, you can restart your router and Mac and check for any conflicting devices on your network. Depending on whether the problem persists, you may need to configure your IP address settings on your Mac manually.
You can do it by going to System Preferences > Network > Advanced > TCP/IP . Consult your router’s manual or contact your internet service provider for specific instructions.
How do I Fix DHCP on Mac?
Dynamic Host Configuration Protocol, or DHCP, is a crucial network component in most networks. The device assigns IP addresses to devices connected to the network. Without it, devices may be unable to connect to the internet or communicate with other devices on the network. If you are experiencing issues with DHCP on your Mac, there are a few steps you can take to fix the problem.
The first step is to check your network settings. Make sure that your Mac is set to obtain an IP address automatically and that DHCP is enabled. If these settings are incorrect, you may need to enter them manually. If this does not fix the issue, try restarting your router or modem. Sometimes, a simple reboot can resolve DHCP issues.
Another solution is to clear your DHCP lease. It will force your Mac to request a new IP address from the DHCP server. To do this, open the Terminal app on your Mac, then type in “ sudo dhclient -r ,” followed by your admin password. It will release the current DHCP lease, and your Mac will request a new one.
If none of the above solutions works, your router may malfunction, or you might have a problem with your modem. Try contacting your internet service provider for assistance or checking for firmware updates for your router.
Various issues, including incorrect network settings, DHCP server issues, and router problems, can cause a self-assigned IP address error on a MAC. To fix this issue, you can try troubleshooting steps such as renewing the DHCP lease, resetting network settings, and resetting the router.
In case these steps fail, you can try advanced solutions such as checking for malware or viruses, reinstalling the network adapter driver, and checking for hardware issues. If the problem persists, you may need to contact technical support.
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How To Fix Internet Not Working Due To Self-Assigned IP Address Issue
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.
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.
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
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.
2. On System Preferences screen, click on the Network Icon.
3. On Network screen, select your Network ( Ethernet or WiFi ) in the side-menu and click on Advanced .
4. On the next screen, switch to TCP/IP tab and click on Renew DHCP Lease button.
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.
2. In Go-to window, Type /Library/Preferences/SystemConfiguration/ and click on the Go button.
4. In System Configuration folder, delete the following folders (right-click on the Folders and move them to trash).
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.
2. On Service Order window, drag your preferred Network (WiFi or Ethermet) to the top position.
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.
2. On the next screen, click on the Plus icon to Add New Location.
3. On the next screen, type a Name for the New Network Location and click on Done .
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.
- Tips to Speed Up Slow MacBook, Mac Mini and iMac
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Self assigned ip address
Weird recurring problem: Every day for the past few days, at a certain point in the evening (around 10-11 PM), my M1 Mac Mini loses its connection to the network over both ethernet and wifi. Both services in the Network panel in System Preferences say “self assigned ip address”. A reboot solves the problem, but it comes back the next day.
None of the other devices on my home network – wired or wireless – have this issue.
The ethernet port on the Mac is connected directly to a TP-link modem-router. Wifi is to a TP-link Deco mesh network (main Deco is M5 unit sitting right next to the Mac Mini and connected to the router via ethernet cable).
Given this problem is only on the Mac Mini and also affects both the wired and wireless networks (which are 2 different devices at the other end), I assume this is a Mac Mini problem and not a network problem.
Is it exact the same time, or is it around a time-frame? Is there, or can you activate, a protocol on the Router, to see what happens before and after the disconnection? What is the weather like in your area? Is there a daily reconnect of the router with the external network? Some ISP require that once a day.
UPDATE: The problem was not happening at the exact same time every day, but at around the same time. It only affected one of the 10-15 devices on the network, and it affected that device on both the wired and wireless connection. The weather is consistent (hot and dry). The router does not reconnect to the ISP on any schedule.
I figured out that the problem was somehow connected to the renewal of the DHCP lease. The IP address would switch to “self assigned” at the time the lease was supposed to renew. It wasn’t the exact same time every day, because sometimes I would not notice the problem right away. When I did notice it, I would reboot the computer, which would temporarily solve the problem by getting a new IP address from the router, which would reset the lease renewal to 24 hours later than that moment.
I tried clicking the “renew DHCP lease” button in Network Settings, but that did not seem to do anything as long as the IP address was self assigned. If the lease was still active when I manually renewed, it would renew for 24 hours, which would just delay the inevitable (unless I would remember to manually renew every <24 hours).
What did seem to solve the problem was switching “Configure IPv4” of both Ethernet and Wi-Fi to “Using DHCP with manual address” and then typing in a unique IP address for each (choosing a number within the designated range which was not currently in use by another machine on the network).
It’s been several days now with no problems.
Is there any downside to using manual IP addresses?
Not on a Mac mini. I actually prefer knowing the IP addresses of my desktop devices. Good troubleshooting and solution!
Not to my knowledge. I am setting up my networks always in that way, what keeps me also from searching, if I need to address a device by its IP. I am doing this since the beginning of private networks, so somewhat since 20-30 years now, with zero problems (that I could blame this setting for!) at all.
While there is no downside to a manual IP address, if possible, you should set it on the ROUTER.
This is done by selecting the MAC address of the mac mini network adapter and assigning a static ip. (Not all routers support this)
Just ensure it is NOT in your DHCP range.
To @Ulli ’s and @Jezmund_Berserker points, I assign all devices on my home network a static ip address.
Why should it not be in the DHCP Range? Specially if you set it up within the router?
You want to be able to see WHICH addresses are “dynamic” DHCP leases.
SO, if you have “dynamic” DHCP 192.168.1.50 - 192.168.1.99 and everything else “trusted” with static IP addresses, you can easily identify the outsiders…
Ah, ok. My router shows me, if he has a “dynamic” address. And I don´t have any, so no need for that trick anyway.
Yes. Plus having them managed from the router, you can leave your Mac/iPhone/iPad (whatever) set to DHCP and if you ever connect to another network, you won’t be pulling your hair out for an hour because you forgot that you have YOUR network address set statically.
Only if you are not careful. Suppose at a moment when your device with a manual IP address is down a separate new device connects to your network and requests an IP address from the router. Because the manual address is not being used at that time, the router could assign it to the new device. Then, when your manual device starts up, it encounters an error as the IP address is not available.
The solutions to avoid this have already been mentioned.
- Assign the manual IP address at the router, not the device. That way, the router will never assign that IP address to any other device.
- Use an address outside of the DHCP range. Again, this ensures that the router will never assign it to any other device.
Using both provides the best insurance. Using option 2 only could still result in a conflict if two devices have the same IP address manually set on the device. However, with option 1, the router will only allow you to assign an IP address to one MAC address (used to identify each device as unique) at a time. Therefore, there are no conflicts and all manual IP addresses are managed at one location.
Thats a very conscientious approaching, but that’s not really how IP address assignment works. Being down for a moment doesn’t put you at risk of conflicts.
In a home setting especially, there is no issue with assigning a static IP from the device.
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Self-assigned IP address
I sometimes have problems dropping IP addresses after changing networks and get stuck with a self-assigned IP that I cannot drop by hitting the renew "DHCP Lease" button on my Mac OS X.5 Leopard. The only work around is to manually give myself a "good" IP, shut down my computer, then boot up and switch back to regular DHCP. Any ideas?
4 Answers 4
Somtimes issues like these can arise from malformed network preferences. Try deleting (or just moving/renaming) these files:
Here's some fairly unpleasant instructions from apple http://support.apple.com/kb/TS1920
It must be the problem with your IP Address. 169.254.*.* is an address reserved for local ip address. If your DHCP server uses that address then you could not connect to the internet.
Please check this Internet connection does not work with an IP address space of 169.254.xxx.xxx from ISP, router, or manual configuration
Connecting using the plain WEP password was allowing me to connect (to a link sys Wi-Fi) but DHCP didn’t work and I got the dreaded self-assigned address.
To fix it we logged in using the HEX version of the same key (which we found by looking on the router via a wired connection).
On network preferences, select Network Name Join Other Network... then type in the name of your own network, select WEP...HEX. and enter the HEX version of the WEP key.
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Self assigned IP address
I am in desparate need f some help from anyone. My macbook pro will not connect to the internet. All I get is a self assigned IP address. I have tried renewing the DHCP, restarting the computer, resetting the network, etc. Nothing seems to work. I have the Mac OS X 10.7.3 version. Please help!!!
Mac Pro, Mac OS X (10.7.3)
Posted on Apr 9, 2012 10:46 AM
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Feb 18, 2017 4:58 AM in response to joepark14
I've figured it out, i turn off my modem/router for 1 day and power cycle my router and everything is okay, here is the article from Apple Support.
How to troubleshoot Wi-Fi connectivity - Apple Support
Jan 7, 2017 10:48 AM in response to jkaps90
Hi I know is been a long time since this post but this self assigned IP adress issue just happened to me 1-6-17 and on 1-7-17 found a solution. With this post from jkas90 . Thanks jkaps90 and everyone else that takes the time to help others .
Feb 14, 2017 9:44 AM in response to joepark14
I'm ure you figured this out already, but I just spent 2 hours going through this issue and this is the BEST fix I came up with, seems to have stopped my issues no matter how much I move from place to place.
1. Turn off your wireless in your troubled Mac. 2. Open System Preferences->Network tab and highlight your Airport card. 3. In the right hand pane click on the 'Advanced' button. 4. In the main 'Wi-Fi' mini-tab delete all 'Previous Networks' connections. 5. The save out and then go to the application /Applications/Utilities/ Keychain Access.app and in that application find the entries for your wireless router. 6. Then go back into your System Preferences->Network pane and highlight your Wi-Fi card again and use the pane to turn on your wireless again and use that to rejoin your wireless network. 7. Put in your username/password again and rejoin and save the password again. 8. Enjoy.
Feb 27, 2017 6:43 AM in response to pharmer9
Your solution was the only one on this page that helped me...happened to me at my home wifi over the weekend and then when I came to work this morning I had the same issue. This helped!!! Thanks so much.
Apr 6, 2017 1:36 AM in response to Desigurl03
Thank you SO much Desigurl!
Followed the steps one by one (thank you for being so precise!), it worked instantly!
This happened to me after my computer went crazy last night and changed the date by itself back to 2001, perhaps this has corrupted the file? go figure! In any case now it works perfectly. You saved the day, thanks so much for sharing!
Apr 7, 2017 3:37 PM in response to joepark14
I'm a couple of years late but in case anyone finds this thread from a search, I hope this might help:
I got the 'self-assigned IP' problem after reversing the order of two Airports - base vs extension.
At first, I tried tips that helped others - trashing various prefs, re-setting the base station, manually entering random DHCP client numbers, deleting networks, keychains, etc - but no luck.
I then tried the following:
- turned Wi-Fi off on all Macs
- unplugged the 'extension' Airport
- reset the base station Airport (paper clip/flashing orange light routine)
- reconfigured the network with Airport Utility (using the same network name and password as before)
- turned Wifi back on and - bingo - both - Macs connected to Wifi again
- I then restarted and reconnected the 'extension' Airport.
I can't say which step(s) fixed it but my guess is that it may have been a combo of simplifying the network to just the base station, then resetting that, and then rebuilding the network.
Jun 27, 2017 3:21 PM in response to joepark14
Read through several of the replies, and noted with interest that the IP address "169.xxx.xxx.xxx" was self-assigned.
I ended up re-starting the modem and the Ethernet connection came up correctly, but then the Wi-Fi address was the self-assigned "169.xxx.xxx.xxx". Hmm. Re-started the Wi-Fi part of the modem/router and it was fixed. Really weird.
I'd just put in some power-line adapters to try out, and wondered if that had really messed things up. Good to know they hadn't -- except that one of the Macs hadn't been connected via Ethernet for some time. The connection worked last night, but not this morning. Glad things are back up and running.
Jul 27, 2017 8:34 PM in response to joepark14
I know this thread is super old but if anyone is still having this problem, like I did I finally solved my issue! I tried everything in this thread from manually entering the IP address, rebooting my computer, etc. LITERALLY everything. I finally called my ISP (TWC/Spectrum) and told him my issue and the customer service guy figured out that our modem was receiving the wrong information from the servers, resulting in the self-assigned IP address. He rebooted the modem manually and worked some magic and I was instantly online!!!! Hope this helps someone
Aug 18, 2017 9:42 AM in response to Pankajbhai Ahmedabadi
Happened on my wife's MacBook Pro running 10.12.6---Self-assigned IP on WiFi and Ethernet. Other Apple devices in the house connected with no problem. I tried all fixes in this thread. Nothing worked. I could establish WiFi and Ethernet communication to the internal network (manual IP address), but not to the Internet. Rebooting and resetting ISP modem did not work. Took it to the Apple Store. The MBP connected to their Ethernet, but not to their WiFi. The GB-worker noodled awhile, no solution. Finally, they loaded a new system, then WiFi and Ethernet connected to Internet. Later, at home, used Time Machine to restore the MBP to last working version. WiFi and Ethernet to Internet have been working ever since. Would just using Time Machine at the outset have worked? Maybe.
Apr 9, 2012 11:27 AM in response to joepark14
Are there any other devices on the same network, and are they able to get an address?
Apr 9, 2012 11:35 AM in response to Linc Davis
Yes! It is the company internet connnection. Everyone seems to be connected to it except me. I havent tried to connect to it wired, only wireless.
Apr 9, 2012 11:45 AM in response to joepark14
Try a wired connection, if that's an option. If you can connect wired, but not wirelessly, then the following support articles may help:
Joining an encrypted WEP or WPA Wi-Fi network
Troubleshooting Wi-Fi issues
Apr 9, 2012 11:50 AM in response to Linc Davis
so I plugged in a wired connection and it worked. Unplugged it and the wireless was working again. Not sure what happened but its back up and running. Thanks!
Apr 16, 2012 8:42 PM in response to joepark14
I had this happen to me twice and the solution for me was to delete the wifi network and keychain password.
The first time i fixed it by restoring from Time Machine which took a long time. I also tried the renew DHCP, delete com.alf.plist etc to no avail. The second time I found a better solution from someone on this forum:
Go to Network Settings
Turn Airport Off
Click Advanced tab
Select my wifi network and hit minus sign to delete
Go to Keychain access in Applications/Utilities
Find your network name in the list and delete that password login
Then go back to Network settings and turn airport back on
Click plus sign then Show Networks
Choose your network and re-enter your password
Then airport should work again, this is what fixed it for me.
All the best
Apr 29, 2012 9:10 AM in response to ericdy
Thank you, a simple and excellent answer which helped me greatly!