We are going to troubleshoot and fix the self-assigned IP on MacBook. I’m going to share one solution for this issue. If you are using Mac OS X 10.5 or later and facing this issue, you can try this.

I have been having the same issue with my computer and the only time I could connect to the internet was when my Firewall was off. I was luckily still under warranty so I called apple care today and she told me these steps that fixed my problem. When you are at your desktop screen go to the tab labeled 'GO' and click on Computer. Once you are there follow these steps: 1. Click on Macintosh HD 2.

Click on the file labeled 'Library' 3. Click on the file labeled 'Preferences' 4. Click on the file labeled 'SystemConfiguration' 5. Then move these three documents to the trash (don't delete them just in case but your computer should remake these documents on its own 1. Com.apple.airport.preferences.plist 2. Com.apple.network.identification.plist 3. NeworkInterfaces.plist 6.

Then restart your computer and you should be good to go and if you are you can go ahead and delete those documents in your trash (that is what I did) because one of those documents was corrupted. Hope this helps and let me know if it worked! 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 Click Okay Click apply 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 Advanced Click plus sign then Show Networks Choose your network and re-enter your password Click Okay Click Apply Then airport should work again, this is what fixed it for me. All the best. I struggled with this for six hours and finally decided to call my router manufacturer (TP Link), and got a solution.

It was a problem with the settings on my router. The combination of the signal width and security type on my wifi settings didn't seem to work with my iMac even though they worked with a MacBooks, iPad etc. I'm not sure if this was due to the age of my system or not but here's what I was told to do: Reset the router to factory settings (you can probably try without doing this, but I'd recommend it to isolate this from any other issues) Go to System Preferences - network - WiFi - advanced, click the minus next to your old network Set the IPv4 option to DHCP Try and sign into the router login page (usually 192.168.0.1 or 192.168.1.1), to test if you can connect to it, if you can: Change the router signal width from 40mhz to 20mhz Change the wireless channel to 11. Rename your network. Change the wireless security type to WEP and set a password of ten numbers On your mac: Remove your network from network settings again, then reconnect with the password you just set Try and connect to the internet It should work now, but change back the security to WPA/PSK again and set a password, as this is much more secure than WEP. I believe that random 169.

IP address is because for some reason there is a failure in connection between the router and mac, and it is essentially a 'wild guess' built into OS. So I think for many people this is likely to be a problem with your router settings rather than your Mac. Hopefully this helps somebody, I felt like it would be looking for a needle in a hay stack otherwise. 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 Click Okay Click apply 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 Advanced Click plus sign then Show Networks Choose your network and re-enter your password Click Okay Click Apply Then airport should work again, this is what fixed it for me. All the best.

So sorry to hear that. The only other trick I have is the following.

I don't know if it will help for you Applying a manual IP under the Configure IPv4 selection should work. In your home router this will be 192.168.1.X. However, this for me is not where the problem lies - for me it is when out on the road using a third party WiFi, what IP to use? You may find that your iPhone can pick up the network. If so, check your phone under settings / WiFi right arrow on chosen network and see what IP your phone has picked up. Put the same IP into your laptop using 'Manually' - just use a different last digit That the extent of my suggestions I am afraid! Apple Footer • This site contains user submitted content, comments and opinions and is for informational purposes only. Samsung 2510 printer driver download for mac.