yelihop
Level 1 (8 points)

Q: MB Pro Wi-Fi problems

Hi,

 

My MacBook Pro keeps dropping out its wi-fi connection (generally every few minutes, and it returns after ~30 secs). This only started in the last few weeks. It's a MacBook Pro mid-2015 recently updated to El Capitan 10.11.5. The wireless router is an Airport Extreme (older, around 2011).

 

iPad and Mac Mini (connected via Ethernet) have no connection issues.

 

Eventually did a clean install of El Capitan, and the problem persisted as before.

 

I then created a bootable USB, with which the wi-fi is working absolutely fine so far. No dropouts at all.


Thanks for any advice.

MacBook Pro with Retina display, OS X El Capitan (10.11.5)

Posted on May 24, 2016 11:51 AM

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yelihop

Q: MB Pro Wi-Fi problems

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  • by Carolyn Samit,

    Carolyn Samit Carolyn Samit May 24, 2016 11:59 AM in response to yelihop
    Level 10 (122,076 points)
    Apple Music
    May 24, 2016 11:59 AM in response to yelihop

    Hi,

     

    First, see if resetting your AirPort Extreme helps. Instructions here >  Resetting an AirPort base station FAQ

     

    If that doesn't help, network preferences may be corrupted.

     

     

    Open the Finder. From the Finder menu bar click Go > Go to Folder

     

    Type or copy paste the following:

     

    /Library/Preferences/SystemConfiguration

     

    Click Go then move all the files in the SystemConfiguration folder to the Trash.

     

     

    Restart your Mac. See if that makes a difference.

     

    Your Mac will generate a new SystemConfiguration folder for you.

  • by Linc Davis,

    Linc Davis Linc Davis May 24, 2016 2:13 PM in response to yelihop
    Level 10 (207,963 points)
    Applications
    May 24, 2016 2:13 PM in response to yelihop

    DO NOT try to delete the SystemConfiguration folder. You can't, unless the system has been hacked.

     

    A "clean installation" means that you erased the startup volume, reinstalled OS X, and then tested without installing any other software or restoring any data from a backup. Is that what you did? How did you prepare the USB drive you're booting from now?

  • by yelihop,

    yelihop yelihop May 24, 2016 2:56 PM in response to yelihop
    Level 1 (8 points)
    May 24, 2016 2:56 PM in response to yelihop

    Thanks for the replies.

     

    A 'hard reset' of the Airport Express seems to have resolved the problem.

     

    To Linc: yes, the clean installation was as you described (didn't resolve the problem). The USB drive was prepared using createinstallmedia, which seemed to circumvent the problem, for whatever reason.