Installation went great, but now the internet doesn't work

Another one with issues...on my macbook. I have done all of the suggestions (new location, remove and readd, remove system config preferences, re-install, etc.) Mine sees the network fine, but when it goes to assign an IP, it won't assign it automatically (tried resending dhcp lease, etc.). So back to leopard on that mac...LOL

My Airport connection was not maintaing an IP address as noted the the Network Pane of System Preferences. Making a "New Location" in the Network Preferences fixed the problem. See System Preferences Help for instructions on how to do this as it is a rather simple task. There is also another solution listed for trashing a number of preferences that may do the job.

I've done just about everything suggested above. Internet connection works for awhile, but then disconnects. I have to go into network connections and go over the setup again, then it works or awhile and we go through the same dance again. Very annoying and my first occasion to curse a macintosh operating system.

Hello everyone,
Had the same problem here, but I got it fixed. Do this:

- open "System Preferences"
- select "Network"
- click on "Location" drop-down menu
- select "edit locations"
- create a new one (name it whatever you like, e.g. "10.6" or so
- obviously select Airport to the left (and remove everything else you need)
- select the network in the "Network Name" drop-down menu to the right
- hit "apply" on the lower right corner

Worked for me. Obviously some kind of bug in the current release.

Best wishes,
JH

A clean install do the work, now my computer get internet from my Airport Basestation

Many suggestions on this forum appear to only work for a short period of time. So in System Preferences>Network pane I made a new location with only AirPort in it and I keep it open on the desktop. Now the Airport IP is not being lost but internet connection only works for a short time. So I toggle Airport in the Network Pane to renew connection.

Ultimately, my solution was to upgrade the firmware on my Actiontec GT701-WG. So far, so good. After three hours, no disconnects.

In reply to Alexander; the solution that is working for most of us who upgraded to Snow Leopard is to do this;

System preferences > Networks.
At the top of the screen is a location pull down menu if you have never changed this it says automatic.
Click on the word automatic and select edit locations
Add a location (I called mine home).

Go into advanced (bottom right button)
Click on tcpip button (near top)
Click on renew dhcp button (upper middle right)
Click OK (lower right)

This should work now.


Also to others - If you are not familiar with Tech support do not give dangerous advice to reset router firmware, check hardware, or other items. If many people make a single change and get a single issue (like upgrading their OS and losing connectivity) - it is not going to be a thousand different answers.

The problem is with what was changed. In this case upgrading to Snow Leopard is causing the problem.

I had the same issue and found the solution in a discussion forum category about Airport and Snow Leopard issues:

"I solved my problem by going into System Preferences > Network and removed the Airport service by clicking "-". I then added the Airport service back by clicking on the "+" and the problem was solved."

I use a Time Capsule, and as soon as I took the above actions and unplugged the ethernet cable, I was up and running wirelessly. I should mention that I changed my Time Capsule SSID name during the trouble shooting process. This may or may not have played a part in solving my problem.

This worked for me! I even tried going back to "Automatic" -- the problem returned. I am now using the "new" connection created by these instructions, and it works! Thanks!

Here are the instructions provided by jhuettner:

Hello everyone,
Had the same problem here, but I got it fixed. Do this:

open "System Preferences"
select "Network"
click on "Location" drop-down menu
select "edit locations"
create a new one (name it whatever you like, e.g. "10.6" or so
obviously select Airport to the left (and remove everything else you need)
select the network in the "Network Name" drop-down menu to the right
hit "apply" on the lower right corner

Worked for me. Obviously some kind of bug in the current release.

Best wishes,
JH

Alexander, the problem is likely that you have non-working DNS servers manually entered in your Network pref pane. If you delete these DNS servers, your networking should start working again. Write down the DNS servers before deleting them just in case that isn't the problem, but I'm pretty sure that will fix it.

You guys are the best! Thank you!

After 4 flawless installations, the 5th wouldn't connect. "New Location" fixed it. Thank you.

I wish this solution worked for me. I restore my leopard clone and then reinstalled snow leopard. The signal strength shown by the wifi icon shows 2 bars instead of full 4 bars. I rebooted from my leopard clone drive and the signal is back to full 4 bars.

I deleted the entries for my network from Keychain, added a new location, deleted all the services in new location, added Airport with a new name, Added the network with the WPA2 password, clicked on Apply. It got the IP address and says that it is connected. But, the network speed is so slow that it is unusable. Am I missing some step in this "work around"?

I am now working from my cloned leopard and will leave the Macintosh HD disk with snow leopard as is until I see any new solution.