SupaDupaFlyBoi

Q: MacBook won't automatically connect to preferred Wi-Fi network.

I have a MacBook 12" running OS X El Captain (10.11.6). It refuses to connect to my home or office wireless network automatically. We have other Macs and pc laptops that don't have this issue, so the problem is almost certainly machine specific.

 

On startup I have to manually select the wireless network, it connects fine until the laptop goes to sleep or is shut down.

 

Things I have tried so far:

 

Ran software updatesEnsured Remember networks this computer has joined is enabled under Network Preferences > Airport

  • Dragged main wifi network to top of preferred networks (also tried deleting all other wireless networks)
  • Turned airport off and on
  • Recreated network location and deleted ethernet, firewire, etc.
  • Reset keychain
  • Repaired disk permissions
  • Reset network preferences (by deleting files in Library/Preferences/System Configuration)
  • Tested various wireless channels on our BT Business Hub and D-Link wireless router
  • Created dummy mac admin account and replicated the same fault

 

The problem seemed to occur shortly after getting a new Wi-Fi router for my home. Short of an operating system reinstall I believe I have tried everything within my capability.

 

Would appreciate any input or similar experiences.

 

Many thanks!

Posted on Jul 20, 2016 8:28 AM

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Q: MacBook won't automatically connect to preferred Wi-Fi network.

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  • by appreciate,

    appreciate Jul 20, 2016 9:04 AM in response to SupaDupaFlyBoi
    Level 4 (1,276 points)
    Mac OS X
    Jul 20, 2016 9:04 AM in response to SupaDupaFlyBoi

    It seems that is issue of D - link router .( for various routers settings are different ) .

    Open admin page by entering the password for the router .

    set the settings as automatic : usually this option should be enabled , so that an internet connections  is made automatically .

     

    Also firewall settings must be enabled as it protects LAN against port scans & denial of service ( DOS ) attacks .also disable UPNP . demilitarized zone ( DMZ ) is is disabled .

     

    In remote management :

        service                   LAN                                                 WAN

     

          FTP          enabled ( this box is checked )                        enabled ( this box is checked )

          HTTP        enabled ( this box is checked )                enabled ( this box is unchecked )

          ICMP ( ping )  enabled ( this box is unchecked )      enabled ( this box is checked )

          TELNET   enabled ( this box is checked )                 enabled ( this box is checked )

          TFTP        enabled ( this box is checked )                 enabled ( this box is checked ) .

     

    Note : Do a factory default reset , pull out all cables & insert a ball pen on the back side of router , always form a router password that must be noted in the diary and always enable firewall option .