I have a Mid-2014 MBP retina 15" running OSX 10.11.5. It runs flawlessly except for occasional Safari freezes. It happens only while I'm using Safari, and mostly when I try to close a tab. I've contacted Apple support multiple times, and they advised me to try a few things, none of which worked. I've tried to following:

  • cleared history
  • deleted cashes in ~/Library/caches and /Library/caches/

When it freezes, everything freezes with absolutely no response, so I have to do a hard reset every time. What could be the problem? How can I diagnose the problem and fix it?


You can try the following:

In Preferences (cmnd+,)


  1. Check: Allow from websites I visit.
  2. Remove all website data..
  3. Prompt for each website one time only
  4. Ask websites not to track me


Remove all


Disable them all for now.


Untick all and only tick: Enable quick website search

Quit (cmnd+Q) and re-open the app. Let us know if it happens again? :)

  • May or may not work, but an answer is better than no answer. :) – emotality Jul 15 '16 at 16:18
  • Hey, thanks. I've been trying this for a couple of days, hasn't frozen yet. It kind of slows down after a while, though. Specifically, when I try to select the address bar either by clicking on it, or doing Cmd+L, it hangs for a second or so, and then lets me type. – sodiumnitrate Jul 20 '16 at 2:37
  • The same is true for opening a new tab with the keyboard shortcut. – sodiumnitrate Jul 20 '16 at 2:37
  • So it gets slower by time until you clear cache again? Thnks for Cmnd+L never knew about it! hehe – emotality Jul 20 '16 at 2:39
  • 1
    Thanks. I can already check this using activity monitor -- but isn't it weird that it's only safari that freezes? Also, I'm sure the OS has better ways of handling the situation if the system runs out of RAM: freezing up entirely is so 90s :) – sodiumnitrate Jul 27 '16 at 18:54

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