Previous 1 2 Next 21 Replies Latest reply: Jun 11, 2015 9:30 AM by variousred Go to original post
  • andyBall_uk Level 7 Level 7 (20,490 points)
    michaelmckeever9 wrote:
    As far as I can tell it's still on, but I have had to run the command several time ad it does not hold at all. Just now some images didn't load and I got a can't connect to the server massage.

    I see - sounds as if there's something else amiss.

    defaults read WebKitDNSPrefetchingEnabled

    will confirm the setting - it is set per user & (probably) needs Safari restarted to take effect.
  • powerbook1701 Level 3 Level 3 (565 points)
    it would be nice if pre-fetching was an option to turn on and off in Safari.
  • Klaus1 Level 8 Level 8 (46,955 points)
    I, for one, agree.

    You can use this form for sending Apple feedback about Safari:
  • powerbook1701 Level 3 Level 3 (565 points)
    Thanks, already did before posting. Just reading that thread reminded me that I wanted to do that as soon as it came out.
    For something that can impact Safari so much, it would be nice to control least on or off
  • michaelmckeever9 Level 1 Level 1 (5 points)
    After what happened to Safari a few days ago i will leave it enabled.
  • pancho2412 Level 1 Level 1 (0 points)



    first I must appologize, I am a really new Mac user ...


    I would like to know how I disable DNS-prefetching for all users per default. Or do I need to run the command above once for every user I have created on my Mac?


    I also assume that once executed the command to disable dns-prefetching this will be kept unless I enable dns-prefetching again. And this also if I restart my mac and login again on my profile.




    BTW: I tried to read the value of WebKitDNSPrefetchingEnabled but this is only working several times directly after having written this attribute to false. After some more repeats I get the following message


    >defaults read WebKitDNSPrefetchingEnabled

    2014-02-27 23:23:39.140 defaults[9167:507]

    The domain/default pair of (, WebKitDNSPrefetchingEnabled) does not exist


    Any feedback would be most appreciated!!!



  • variousred Level 1 Level 1 (0 points)

    I've tried to get the plist setting to stick and it always deletes itself as soon as safari starts up. WHY CANT WE DISABLE THIS?!


    Safari 7.1.6


    I've left product feedback with apple following the link above.

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