Eowyn_Art
Level 1 (0 points)

Q: My MacBook Pro will not open any application or program that requires internet, even though I am connected to the web.

My MacBook Pro will not open any app or program that requires Internet, even though I am connected to the web. I recently installed Norton AntiVirus and think it may have changed a setting that I couldn't find. I uninstalled Norton and it didn't help. Every time I open Safari, iTunes or any other program that tries to connect to the Internet, it crashes. Strangely enough, Skype still works, but nothing else.

 

I have OSx 10.6.8.

 

I have tried erasing plists, and all the standard troubleshooting, ie resetting modem, restarting computer, reloading Safari from disk.

 

Any help would be greatly appreciated. Thank you in advance.

MacBook Pro, Mac OS X (10.6.8)

Posted on Mar 22, 2012 3:52 PM

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Eowyn_Art

Q: My MacBook Pro will not open any application or program that requires internet, even though I am connected to the web.

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  • Helpful answers

  • by CMCSK,

    CMCSK CMCSK Mar 22, 2012 3:58 PM in response to Eowyn_Art
    Level 6 (10,875 points)
    Mar 22, 2012 3:58 PM in response to Eowyn_Art

    Change your router channel.  Sometimes this is all you will have to do.

     

    Power cycling the router.  Read the router's user manual or contact their tech support for instructions.

     

    System Preferences/Internet & Network/Network

    Unlock the padlock

    Locations:  Automatic

    Highlight Airport

    Click the Assist Me button

    In the popup window click the Diagnostic button.

     

    System Preferences/Network- Unlock padlock.  Highlight Airport.  Network Name-select your name.  Click on the Advanced button.  Airport/Preferred Networks-delete all that is not your network.

    Place a check mark next to "Remember networks this computer has joined."  Click the OK button and lock the padlock.  Restart your computer.

     

     

    http://support.apple.com/kb/TS1920 Mac OS: How to release and renew a DHCP lease

     

     

    No internet connection (wireless)

    Check to see if an extra entry is present in the DNS Tab for your wireless connection (System Preferences/Network/Airport/Advanced/DNS).

    Delete all extra entries that you find.

    Place a check mark next to "Remember networks this computer has joined."

     

     

    Other resources to check into:

    Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6

     

    Netspot

     

    How to diagnose and resolve Wi-Fi slow-downs

     

    Pv6 troubleshooting

     

    Mac OS X 10.6 Help:  Solving problems with connecting to the Internet

     

    What Affects Wireless Internet?

     

    Solutions for connecting to the Internet, setting up a small network, and troubleshooting

     

     

    I uninstalled Norton and it didn't help.

    To properly uninstall Norton software follow these instructions - Locate Symantic Solutions folder inside the Applications folder at the root level of your HD, launch the Symantec Uninstaller application, select the Symantec AntiVirus Corporate, Norton AntiVirus & Norton AntiVirus Auto-Protect entries and click the Uninstall button. 

    Confirm your decision when prompted and then enter your administrator password in the space provided.

     

    Retart your computer & Norton should be gone for good.

     

    If the above does not work, download a copy of Symantec’s RemoveSymantecMacFiles removal utility.  This utility will launch Terminal & remove the Norton components.

     

     

     

     

     

     

     

     

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  • by Eowyn_Art,

    Eowyn_Art Eowyn_Art Mar 22, 2012 4:50 PM in response to CMCSK
    Level 1 (0 points)
    Mar 22, 2012 4:50 PM in response to CMCSK

    None of this helped, but thank you for trying.

     

    Now iTunes won't start at all. The problem is NOT my Internet connection. There is another MacBook in the house that is working fine. And my mac does show that it is connected, also I've tried hardwiring it in as well. PLEASE HELP!!! I'm freaking out.

  • by Shootist007,

    Shootist007 Shootist007 Mar 22, 2012 5:33 PM in response to Eowyn_Art
    Level 6 (16,660 points)
    Mar 22, 2012 5:33 PM in response to Eowyn_Art

    Never Ever install ANYTHING that SAYS NORTON on it on any computer, Mac or PC. It is one of the biggest resource hogs and changes things without asking and then can cause what you are seeing.

     

    Search for Uninstall Norton AV from Mac and follow the instructions to the letter to get rid of the POJ software.

     

    You don't need any AV on a Mac.

  • by fane_j,

    fane_j fane_j Mar 22, 2012 6:16 PM in response to Eowyn_Art
    Level 4 (3,677 points)
    Mar 22, 2012 6:16 PM in response to Eowyn_Art

    Eowyn_Art wrote:

     

    PLEASE HELP!!!

    Test the issue with the new user technique.

     

    Isolating an issue by using another user account

    <http://support.apple.com/kb/TS4053>