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  1. #1

    Member Since
    Sep 25, 2009
    Why did my network security encryption change from WPA to WEP?
    After not using my iMac Power PC G4 for several months (I use a newer MacBook now) I turned it on to access the internet. It had been previously configured to a WPA encryption but now was asking for a WEP password. I also got a message "your network setting has been changed by another application." I know the present location of my iMac is in range.

    What happened to my network security, and how can I go back to my network with WPA encryption?

  2. #2

    Kevriano's Avatar
    Member Since
    Jul 02, 2006
    Crawley, England
    20" Intel iMac 2.4 Ghz/3G Ram/320HD, Snow Leopard. PBook G4, 1.5Ghz/1.5 Ram/250 HD, Leopard 10.5.6.
    No idea why it changed, but you'll need to access your router via ethernet to change it back.
    Try my custom Mac Forums Search Engine: Mac Forums Google Search

    Please use the reputation system if you consider any help given useful (it's the little ✓/✘ on the left <---)

  3. #3

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Nambucca Heads Australia
    iMac, i7 4GHz, 32GB memory, 1TB Blade Drive, OS X.13.4
    Have a look at this suggested fix involving dragging preferences to the desktop:-

    Apple - Support - Discussions - Network Preference Pane Gone Berserk ...

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