Currently Being ModeratedMay 11, 2012 10:25 AM (in response to artyphil)
Same here but only at work. This is via wifi. Ethernet works fine but wifi will not get mail, load pages or go to the app store. Without saving old installs though, I'm not sure it's possible to install anything under 10.7.4.
Currently Being ModeratedMay 11, 2012 10:34 AM (in response to Michele Gardner)
Michele, I wonder if your preference PLISTs where screwed up during the upgrade?
Here is how you can check....
Open a terminal and do:
sudo cp -pR /Library/Preferences/SystemConfiguration/ ~/Desktop/prefs/
This will make a back up of your system preferences
For the next step, I will assume you know the passwords and such to reconnect back to your work's WiFi (and any other settings like Proxies, etc). If not stop here.
In the terminal again do
sudo rm -rf *.plist <<make sure you copy and paste this line, because rm -rf can be deadly if issued incorrectly>>
When you Mac comes back up, you will have no network preferences set. Please reconnect back to your works WiFi and see what happens.
If you need to restore you old config, just open a terminal and do:
sudo cp -pR ~/Desktop/prefs/ /Library/Preferences/SystemConfiguration/
Currently Being ModeratedMay 11, 2012 4:21 PM (in response to DrVenture)
Yes , I tried that - unfortunately still no joy!.....I've been using Macs from my first IIci and never come across a problem like this on an upgrade - it just seems crazy that with 10.7.2 all working fine and now I cannot access the internet even if I use the 'assistant' to start the process all over again from the beginning - what on earth has apple done? I've tried reboot in safe mode, zapping PRam, unplugging everything...
I'm using 10.7.2 on my laptop and can access the internet by both wifi and ethernet so the modem is OK and my internet provider has not altered any settings - it's definately the problem with the 10.7.4 upgrade on my MacPro.
From another thread, in case you didn't see it....
"I deleted all System cache's (using OnyX but I'm sure there are other ways of doing it) and then rebooted. After that wifi was back and working."
Currently Being ModeratedMay 13, 2012 11:10 AM (in response to artyphil)
I have been trying to solve the same problem for hours: my MacBook Pro could not connect to ANY wifi point... In the end I managed to make it work (quite randomly) by disabling and re-enabling the firewall. Hopefully this will be useful to someone
Hi, I've been using my Mac with Lion without a problem for months.
But now I started at a new job and my computer connects to the wireless networks but then I get an exclamation mark on the WiFi icon on the menubar and "Alert: No Internet Connection".
Network Prefs: self-assigned IP
The main difference between both networks is that home is a modem router, and at work it's modem + router
I've tried all solutions that I've found, but since any other Mac running Lion can connect to the same work network without a problem it's got to be me.If I run into the Bootcamp partition, Win7 connects.
I've manually copied the IPv4 Network settings of the Mac Lion sitting next to mine. Nuthin. Well, yes, the exclamation mark went away from the menubar and the browsers stay trying to connect... forever.
I thought it could be that the system "stuck" with the first network it was configured to, but no. I changed my HOME network SSID and OSX connected again. It may be a b/g/n problem but no one at work figured a solution yet.
By the way: firewall has NEVER been on.
What I've tried:
- ping to the router: no answer (??)
- delete all "preferred networks" from Network prefs. Delete them from keychain. Even give open authorisation for anyone to use'em on Keychain.
- Delete all System Configuration prefs
- sudo ipfw list , sudo ipfw flush
- untick the "Use Passive FTP Mode" for ethernet
Please, could anyone help me or point me in the right direction?
Unfortunately not...and my problem is that I cannot connect to the internet at all through my broadband modem via ethernet after the update to 10.7.4 - all works fine in 10.7.2 - can anyone solve this problem it's driving me crazy!!