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Major DNS issue - Mac Forums no help

Discussion in 'Apple Mac' started by WarmCurb, May 8, 2012.

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  1. WarmCurb

    WarmCurb Thread Starter

    Joined:
    Mar 15, 2004
    Messages:
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    The various Mac Forums I've tried have attempted to help (can post their solutions if needed), but none worked. My issue has to deal with DNS settings, I think.

    The problem:

    - Security Certificates: Pop up daily for Facebook mostly, but also Twitter. I will click Continue, which takes me to...
    - 404 Error/Page Not Found Error: After the Certificate error mentioned above, this happens. Mostly to YouTube. It will stay like this for a few hours. I've cleared cache, rebooted, etc. etc. Nothing works.
    - Images turn into little blue boxes with a question mark in them. **When this happens, it's an indication that a Certificate box will pop up out of the blue.
    - Google.com (right now): Invalid URL

    The requested URL "/", is invalid.
    Reference #9.df260e6b.1336506889.420cf4f


    So what can I do? It happens on both my Macbook Pro and iMac - both connected wirelessly to a Linksys router/cable modem.
     
  2. Headrush

    Headrush

    Joined:
    Feb 9, 2005
    Messages:
    2,487
    Maybe use /Application/Utilities/Keychain Access and remove any certificates for those web sites which are a problem.

    You might want to use /Applications/Utilities/Terminal to do the following:
    Code:
    scutil --dns
    Make sure your DNS server is right.

    Code:
    dscacheutil -flushcache
    To clear out old and possibly modified DNS entries.
     
  3. WarmCurb

    WarmCurb Thread Starter

    Joined:
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    Thanks. Will this help even if it happens in all browsers - Safari, Chrome and Firefox?
     
  4. WarmCurb

    WarmCurb Thread Starter

    Joined:
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    In terminal, do I just type in "scutil --dns" and hit Enter?
     
  5. Headrush

    Headrush

    Joined:
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    Messages:
    2,487
    Yes.

    Yes.
     
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