Cannot connect WPA2 Enterprise networks

Discussion in 'OS X El Capitan (10.11)' started by spoa94, Sep 29, 2015.

  1. spoa94 macrumors 6502a

    spoa94

    Joined:
    Oct 12, 2011
    Location:
    New Orleans, LA
    #1
    Ever since updating to 10.11.1 beta I cannot connect to any WPA2 Enterprise networks. Has anyone else experienced this or know of a fix????
     
  2. kheowkul macrumors newbie

    kheowkul

    Joined:
    Sep 4, 2010
    #2
    Yes had the same on on the early betas and also on gm. Found no fix unfortunately
     
  3. beebarb macrumors 6502

    beebarb

    Joined:
    Sep 10, 2015
    #3
    Something I recall from the seeing the release notes for the developer betas thanks to some sites I frequent:
    "When negotiating a TLS/SSL connection with Diffie-Hellman key exchange,
    OS X El Capitan requires a 1024-bit group or larger.
    OS X El Capitan will not connect to a server that allows negotiation with a 512-bit or smaller group.
    These connections include:
    ⁃ Secure Web (HTTPS)
    Enterprise Wi-Fi (802.1X)
    ⁃ Secure e-mail (IMAP, POP, SMTP)
    ⁃ Printing servers (IPPS)"

    Your Enterprise network security may simply be insufficient as far as El Capitan is concerned.
     
  4. spoa94 thread starter macrumors 6502a

    spoa94

    Joined:
    Oct 12, 2011
    Location:
    New Orleans, LA
    #4
    SOLVED!!!! I just had to reset my PRAM. Follow these steps:

    1) Shut down computer
    2) Turn on computer
    3) Hold down command, option, p, and r keys
    4) Release keys after power on sound and apple logo appears

    As soon as I logged in my mac immediately logged into my school's WPA2 Enterprise network
     
  5. kheowkul macrumors newbie

    kheowkul

    Joined:
    Sep 4, 2010
    #5
    Will try it tomorrow at the office where I had the problem with wpa2 network. hope it works as its the only reason I can't update to El Cap
     
  6. Shirasaki macrumors 603

    Shirasaki

    Joined:
    May 16, 2015
    #6
    Does this only limited to diffie Hellman key exchange?
     
  7. beebarb macrumors 6502

    beebarb

    Joined:
    Sep 10, 2015
    #7
    @Shirasaki
    I don't know for sure, but that seems to be the case as far as I can tell.
     
  8. kheowkul macrumors newbie

    kheowkul

    Joined:
    Sep 4, 2010
    #8
    Thought it was El Cap specific problem as I had no problems on Yosemite.

    This morning though I clean installed Yosemite and had the same issue connecting to WPA2 Enterprise network as I had on El Cap.

    Then I found the following solution somewehere online and it worked for fixing it on Yosemite so perhaps it also works for El Cap.

    Open Finder > Choose Go From the menu at the top of the screen > Click on Computer > Double Click on Macintosh HD > Double Click on Library > Double Click on Preferences > Click once on the file called "SystemConfirguration" > CMD+DEL the file > Enter your password > restart.
     

Share This Page