MacBook won't connect to the internet!!!

I tried some of the tricks and tips here, as my iPad and iPhone still worked. I found I needed to turn my router off and on and then disconnect and connect to the Internet on my MacBook. Problem fixed.

I am having the same issue as stated and I work in a school and slowly this week more and more of my computers are doing this. All computers so far are the older white macbooks running SL, and all computers were last updated summer of 2012 (most more recently). I have tried the two fixes mentioned with deleting the airport and deleting configuration from the library and this did work on some machines, but others nothing will work. This has happened with computers being turned on for the 1st time this school year, computers that have been working all school year, and computers that have been created recently from a good clean image.

I have tried to superduper a working computer to another and the network settings do not follow.

Looks like this issue has been around for sometime so I would guess there is not a bug/virus.

I am sure I could rebuild a computer and make a new image, but this is hard mid-school year for student computers, and it is hard to netboot a computer that cannot connect to the network!

Thanks

Ok BDAqua...I see you seem very knowledgeable. Can ping anything via address or hostname, but only resolve a few web addresses in Firefox. All other sites and browsers dead in the water

I am running 10.6.8 - latest update

I have Firefox, Safari, Chrome

I have checked DNS and added

208.67.222.222

208.67.220.220

I have tried at home, corporate network, at hotel...eliminating the router as a cause

I've removed the battery...

I've delete systemconfiguration in Preferences

The weird thing is that I can open facebook and get updates in firefox and one other site. Otherwise ALL other browsers and sites are dead

I've tried many of the fixes in the forum but am clueless as to what to try next. Any help you can provide would be awesome. I'm sunk here

thx

Thank you thank you thank you soooo much!

I've been sufferd for this problem for 5 days. I did reset my macbook several times and tried everything I could think of.

I was really in trouble because I'm traveling now and I did all my booking with my macbook. Now I'm back on my feet. I owe it all to you!
Once again, THANK YOU SO MUCH!

I have a somewhat different issue. My Macbook pro will go online intermittenly. There doesn't seem to be any set pattern. I have had it to two repair places, and it is still happening. Anyone else have that issue or a possilbe solution?

This is the one I am waiting on. Cox said it could take 48 hours to update the firmware. I've tried a bunch of other solutions here (modifying IP address, proxy server, startupitems, etc.). Nothing works.

Using a 2013 MacBook Air 11" with a Netgear router. 2008 MacBook works fine. Issues are browser ownly along wth iTunes, App Store, a game that connects to the internet. Email works but only the text; images don't load.

Thank you so much for your precise answer. It has been a year that I have switched to windows on my Mac because of my university stuff and wasn't able to connect to the internet using Macintosh. I am really appreciated for sharing your experience and bringing the best solution.

Actually, that re-create solution only worked temporarily. Today the internet went out again, so I recreated the airport again, and it worked, then minutes later it went out and nothing would work.

Turns out something was off with my ISP...I think I did it when I was screwing around with it earlier. So I had to reconfigure my network settings, and now it is working, and the ISP number was automatically reconfigured in the process.

socialjen you rock my sox I have been trying to figure this out for months now womps to have to keep connecting to wifi everytime you need to use the intenet thanks so much your post finally helped me.

i'm running mac os x 10.6.8

i have a problem with connection of my mac

i was connected to Wi-Fi but when i open safari and open facebook.com

it say that i'm not connected to internet

can help me with this problem?

This happened to me about 5 yrs ago, with my old mac. Now today evertyhing MacBook, Iphone, Ipad all wont connect, exactly the same oddness as before. The system even tells me my password is wrong, which it isn't. I am currently wired in to try and solve this. This seems like its a very old problem which is still going on.

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 ????

Can't access internet ?

it happened to me..

ethernet is green but no internet connection

has tried to diagnostic , on off firewall n etc still no worked...

just try this

1) empty trash

2) Restart laptop

and it work's (^_^)/