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  1. #1

    uncle808us's Avatar
    Member Since
    Dec 13, 2012
    Posts
    26
    Specs:
    MacBook Pro 15 in. OS X 10.9.1, NVIDIA GeForce 9400M 256 MB
    IP address connect problems
    Problem Connecting.
    "Another device on the network is using your computers IP address ( numbers here)(***.***.*.**)
    Try connecting again later. If you continue to have problems, change the IP address of this computer or the IP address of the other device. Contact the network administrator if you nee more information."

    I get this message every so often on one of my MacBook Pros, more on one than the other.
    What can I do to stop this from Happening? I turn off my Mac router and back on that fixes it but I don't want to do this every time I wake my computer.

    Please help me if you can. Thanks.
    MacBook Pro 15 in. *OS X 10.8.2,*NVIDIA GeForce 9400M 256 MB
    Attached Images Attached Images
    MacBook Pro Retina, Mid 2012 15 in. OS X 10.11.6,

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    22,378
    Specs:
    Imac 27", 3.3GHz, 512 flash storage, 16GB memory, macOS Sierra.
    Set up using WPA2-Personal and not WEP?
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  3. #3

    uncle808us's Avatar
    Member Since
    Dec 13, 2012
    Posts
    26
    Specs:
    MacBook Pro 15 in. OS X 10.9.1, NVIDIA GeForce 9400M 256 MB
    Thanks I believe I already have this set.
    Attached Images Attached Images
    MacBook Pro Retina, Mid 2012 15 in. OS X 10.11.6,

  4. #4

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Keller, Texas
    Posts
    49,395
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, Sierra
    Make sure your router is setup to use DHCP. Also check your network settings in System Preferences Network, again to make sure you're using DHCP. (click on the TCP/IP tab to check)

  5. #5

    uncle808us's Avatar
    Member Since
    Dec 13, 2012
    Posts
    26
    Specs:
    MacBook Pro 15 in. OS X 10.9.1, NVIDIA GeForce 9400M 256 MB
    That is set up.
    Below is an answer I got else where.

    "It's not a sign there is any issue with your laptop.
    Since this issue has been with us for over a decade.
    [This I don't know how to do.]

Did you try changing the Wireless DHCP address reservation, range (that's in the router by the way)
    [I also don't know how to do this.]or tell your apple laptop to forget this network and do over (on the laptop?)
    We got this problem because of a battle long ago over network protocols. As our government paid for the work, it was free for all to use, WARTS AND ALL. So it's all about the money and some folk don't want to know that this is a good system but far from perfect.
this issue has been with us for over a decade"
    This was a reply from MacNN.
    Attached Images Attached Images
    MacBook Pro Retina, Mid 2012 15 in. OS X 10.11.6,

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