Airport connected (full bars) but no internet connection. Driving me crazy!

[Collin Bl]

@ collin B
Both wireless and wired work on windows side, neither works on os x side.
reports connection to airport, but cannot ping google etc. same result on multiple wireless networks

The windows/XP scene and OS and partitions are out of my league so cannot help there.

 

[rippingviper]

I started messing with the router, and I changed the channel that it was using. By default, if I remember right, it was on channel 6-2.437GHz. I Switched it to auto, and now the MacBook goes online. I have no idea why the MacBook would suddenly start having problems with one particular channel, but whatever, for some reason it works now so I'm not complaining.

Do you have a cordless phone or anyone around you have cordless phone? I've had this problem where the phone chooses the same channel as the wireless and the phone takes precedence over the router and lose connection , even if the phone is just sitting on its charger.

 

[ecodisk]

Do you have a cordless phone or anyone around you have cordless phone? I've had this problem where the phone chooses the same channel as the wireless and the phone takes precedence over the router and lose connection , even if the phone is just sitting on its charger.

I do have a cordless phone, and what you said does make sense. What doesn't make sense to me though is why only the MacBook would have a problem. Every other wireless device connected to that same channel with no trouble at all. The MacBook even connected to the channel with no problem, it just wouldn't do anything online with that channel. If the phone, or another wireless device was interfering, wouldn't that affect all connections on that channel?

 

[rippingviper]

I do have a cordless phone, and what you said does make sense. What doesn't make sense to me though is why only the MacBook would have a problem. Every other wireless device connected to that same channel with no trouble at all. The MacBook even connected to the channel with no problem, it just wouldn't do anything online with that channel. If the phone, or another wireless device was interfering, wouldn't that affect all connections on that channel?

Its funny that you ask that. I had my ibook at the time and my pc on wireless and most of the time it would only interfere with 1 or the other. Only during long phone call did I usually drop both connections. What I ended up doing was buying a 5ghz phone instead of a 2.4ghz phone and the problem was solved in my case.

Now i've also had a problem where my router has gone bad as well and every few minutes I would drop connection due to the router self rebooting itself for no apparent reason. I've had that happen many times with D-Link routers. I gave up on them and bought an Apple Airport router that supports N protocol and its been going strong for 2 years now. Once in a while I need to reboot it when the cache gets a little full and it stops accepting wireless connections.

Speaking of which. If you are having troubles try rebooting your router once in a while too

This also applies to the OP. I have had lately where my fiancee was on the iBook and i'm on the MBP and i'm online but she can't open any web pages. She rebooted and still couldn't get a connection, So I rebooted the router and everything was hunky dorey!

 

[H@mid-Vista]

This problem has been going on for a couple of months now. I use my macbook at 2 places: school and home.
At school, when I click the school network under airport, it connects and shows the full bars. But when I open safari/firefox, the page won't load and I get the error message when you're not connected. However, sometimes after like an hour of persisting and retrying, it will be able to access the internet for a little bit for like an hour or so maybe, and then it'll stop working.

At home, it's the same thing. It will connect to my home network (got wireless at home set up through my desktop PC), and show the full connection on airport, but it won't access the internet for the life of me. The difference is I can never gt it to connect unlike at school where it sometimes works, except that it worked for like one day out of the last 2 months (and I didn't change any settings then so it's not like I can attribute it to that).

Also, I am absolutely positive that the networks of my home/school computer and the router settings etc. aren't to blame. Reason is that my friends with macbooks can access the internet both using my home network and the school network (the school one is obvious).

What could possibly be going wrong? Any settings on my macbook that I can change / completely reset? Is the network card or something messed up? I'm contemplating just completely formatting my laptop to see if it fixes the issue. I have leopard installed btw.

I had the same problem with my airport in Snow leopard 10.6.2.
I solved it hardly with a rare solution:

Open Network utility and point to Netstat and start Netstat.
After about 15 sec your internet connection starts to react and in Safari you use it.

I hope that it may be useful for you.

bye

 

[reggnar]

yea im having problems with this too at school it says i have five bars and unfortunately no connection. at home its perfect in fact i can stand at the end of my block and still be connected to my network its everywhere but school. when i get on school grounds and when it tries to connect it automatically self-asigns itself an ip. and of corse each student on their macbook has their own ip to get online and if i did use lan our administrator would get on my *** well.. because she projects herself as a well ... ya know so i tried to give as much important info as i can please somone help me on this my grades are on the line here!

 

[digger69]

changed channel and fixed

One other poster indicated they changed the channel from the default (6) to Auto. My TrendNET didn't have Auto as an option so I tried to pick one "far away". I changed my router to use channel 9 and viola, I can connect.

This fix won't help those folks at school since the router is out of your control. However, hopefully this will help someone else.

 

[flavor of locke]

I have this problem too.

The one thing I seem to have that's different from the other people at my college that use MBPs and can connect to the net is that i have a W7 boot camp partition.

I'm in the process of erasing my hard disk and reinstalling just one partition and using Parallels to run Windows to see if that does the trick.

My Internet used to work before the boot camp partition so... I'm keeping my fingers crossed.

I think Microsoft might be poisonous.

 

[joahn8]

A friend of mine had the same problem (full bars on the wifi, but safari complaining about not being connected). I turned off IPv6 in her network settings, that fixed it.

(I'm guessing it has to do with a poorly configured IPv6 router, and the Mac selecting the IPv6 over IPv4, so turning the broken IPv6 off forces the Mac to use the working IPv4 instead)

 

[Mbadwa]

Airport Connected but no Internet

I checked out all the systems files and saw one in Macintosh
HD/Library/Preferences/SystemConfiguration and deleted the system configuration folder and restarted the mac it worked like a charm. Before you delete the folder please copy it onto the desktop in case you need to restore it.