macOS unable to open any non-Apple application
Unbelievable. When I read the tweet (tried to post here as well), I suddenly realized why my Mac was unresponsive an hour ago.<p>Here is another tweet that describes the problem in more detail:<p><a href="https:&#x2F;&#x2F;mobile.twitter.com&#x2F;llanga&#x2F;status&#x2F;1326989724704268289" rel="nofollow">https:&#x2F;&#x2F;mobile.twitter.com&#x2F;llanga&#x2F;status&#x2F;1326989724704268289</a><p>&gt; I am currently unable to work because macOS sends hashes of every opened executable to some server of theirs and when `trustd` and `syspolicyd` are unable to do so, the entire operating system grinds to a halt.<p>EDIT:<p>As others pointed out, I put this to my `&#x2F;etc&#x2F;hosts` file and refreshed it like so:<p><pre><code>    sudo emacs &#x2F;etc&#x2F;hosts # add `0.0.0.0 ocsp.apple.com` 
    sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder # refresh hosts</code></pre>