MacBook won't connect to the internet!!!

Hello mayfi944 or others who have similar issues,

If your Macbook shows it has no issue with connecting to your home router or gateway router, then the problem may be there is a possible bug in OS X.

How do you know if your Macbook has no issue with connecting to your home router? just check http://192.168.0.1/ or http://192.168.1.1/ etc. depending on your router's configuration.

If this is the case, you need reset your Macbook DNS cache. Something like

MacOS® 10.7 and 10.8

1. Click Applications.
2. Click Utilities.
3. Double-click the Terminal application.
4. Type the following command:sudo killall -HUP mDNSResponder Warning: To run this command, you will need to know the computer's Admin account password.

MacOS 10.5 and 10.6

1. Click Applications.
2. Click Utilities.
3. Double-click the Terminal application.
4. Type the following command:

   sudo dscacheutil -flushcache

Good luck!

I had this same problem, and tried every fix suggested on this thread. None worked, so I called support. The fix was this: on the systems preferences, network, advanced, select DNS. I added (using the +) two lines (at the direction of support). 8.8.8.8 and then 8.8.4.4. OK, then Apply, then restart the machine. Works fine now.

Thanks Gwen! Worked gr8 for me!

@Rigelface /

Your post was the most helpful yet. I also found that going to the IP address and asking for it to be reset worked wonders.

Thanks!

Ok, after reading ALL of this, and trying all of the solutions offered here, and many others from the web, I came up with a workaround for my machine. NONE of the suggested fixes worked...deleting files, changing PW type in the router, manually assigning IP addresses, etc., etc., and in fact I *STILL* cannot login directly to my router, so this is STILL a HUGE issue! If I try to hit the router directly, I still get the dreaded 'WiFi has no IP address' error and it self assigns. The last contact with the internet according to the logs was at 3:03 AM local time (GMT+7) this morning Mar 21, 2014, so it definitely was not something *I* did. I looked for a log listing update installs, but could not find one, so I have no idea if an update caused the issue. It worked fine for the last two years with no issues, so why did it suddenly quit working at 3:03 in the morning? A good question for Apple!

My workaround: (definitely NOT a solution)

I have a TimeMachine, and set it up to be a wireless base station. Easy enough, but you have to watch the IP's. It will probably assign an IP outside the range your router is set to. My router, like many, is 192.168.1.1, so I changed the IP address of the TimeMachine to 192.168.1.2 from 169.something and assigned the network range from 192.168.1.3 to 192.168.1.200. So after twelve hours of reading and trying many different things, always getting more and more frustrated, a half hour was what it took to make a workaround. My MBP can now get on the internet! WOO-HOO!

However, it is scary how many people are having this issue, and it would behoove Apple to figure out what the REAL issue is and fix it!!! I am pretty technically proficient, but I cannot imagine if my wife were trying to solve this problem! It does not normally take me 12.5 hours to solve something, or figure out a workaround, which points to how nasty this issue is!

KB

Best way to fix the problem. Thanks! apple please fix this problem with the next update. Its more than frustrating.

I've tried many different solution ideas for this problem, then came across your solution and it works. Cannot tell you how grateful I am - many, many thanks.

awesome GwenFromNV this worked for me, but then i restarted the machine and now it doesnt work again. i checked the 8888 8844 dns thing and it was still there, so not sure what to do next

Hi, you might want to start a new topic to get the most helpers in on it & more directed to your situation. 🙂

https://discussions.apple.com/community/mac_os/mac_os_x_v10.5_leopard?view=overv iew

Thanks KB_Thailand for your workaround. I, too, have/had the same dreadful "no IP address" issue when trying to connect to my network. My husband, who has a PC, has NO problems connecting whatsoever, whereas I have a MBP and have been nothing less than frustrated by this connectivity issue....proving that it's definitely a problem derived from Apple and not from the router nor my own fault. 😕

Anyway, your explained work-around helped me (which is why I can currently type and send this reply)!

Big thanks!

😀

Glad it helped you out xoAnna! It is quite frustrating to have what is billed as a top tier product, that does not work!

A month and a half later, I still cannot connect to my home router, and have had the same issue with WiFi hotspots at various locations, while others work just fine. At home, I still use the connection through the Time Machine, which seems to work 100% of the time, while Windows and Linux boxes connect to the router just fine. When out, if it will not connect, I just use my Samsung Note 10.1 to do whatever I need to do, as it never has issues with connecting to pretty much anything.

APPLE-->THIS IS A HUGE ISSUE AND NEEDS TO BE FIXED!! If you're going to claim to be a technology company, at least do things as well as your competition!

Did not work AT ALL. The problem I have makes no sense. It affects either Airport and my Ethernet connection. I have a MacBook Air Sept 2013 fully loaded with best options. Almost everytime it gets asleep, I lose my Airport connection, and get the stupid exclamation mark, with Preferences Network telling me my computer has no IP adress. And, after a while, sometimes a couple of minutes, sometimes more, it comes back, out of the blue. Exact same thing can happen with my Ethernet (through Thunderbolt) connection. Same stuff : "the cable is connected but your computer has no IP adress". Same thing : I gotta wait, between one and (rarely) 30 minutes before it comes back without me doing anything. It can happen everywhere, has nothing to do with the router or the network, slow, fast, whatever... What the **** is this ????

I tried all the precedent solutions but nothing worked for me.

So, I went in my router panel and i switched the router's channel from 6 to 1, this solved my problem, hope can solve yours.

Thanks bsorense,

You saved me...

This is what he suggested:

I finally got this MacBook back on by changing the computer name: System Preferences - Sharing - Computer name.

Hey, your solution worked great.

Thanks for the help.

Jack