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macOS unable to open any non-Apple application

(twitter.com)
2603 points mattsolle | 2 comments | 12 Nov 20 21:00 UTC | HN request time: 0s | source
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submeta ◴[12 Nov 20 21:15 UTC] No.25075156[source]▶
Unbelievable. When I read the tweet (tried to post here as well), I suddenly realized why my Mac was unresponsive an hour ago.

Here is another tweet that describes the problem in more detail:

https://mobile.twitter.com/llanga/status/1326989724704268289

> 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.

EDIT:

As others pointed out, I put this to my `/etc/hosts` file and refreshed it like so:

    sudo emacs /etc/hosts # add `0.0.0.0 ocsp.apple.com` 
    sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder # refresh hosts
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neop1x ◴[13 Nov 20 13:40 UTC] No.25081989[source]▶
Currently the workaround seems to be /etc/hosts override or firewall-level blocking.

Just a small reminder that this can soon stop working: Apple's apps bypass firewalls like LittleSnitch and LuLu on macOS Big Sur - https://news.ycombinator.com/item?id=24838816

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1. submeta ◴[13 Nov 20 15:42 UTC] No.25083388[source]▶
Will they prevent changing hosts file as well?
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2. tl ◴[13 Nov 20 18:18 UTC] No.25085529[source]▶
It's more likely that their will be an Apple-only private API that uses /private/etc/hosts which already exists, but is editable (for now) instead of /etc/hosts.