OSX High Sierra [EXC_CRASH (Code Signature Invalid)]

EXEC_CRASH (Code Signature Invalid) High Sierra.md

Sooo, Big Sur is out! M1 is out! Congrats.

Unfortunately tho, something happened in early November of 2020, that made most(if not all apps) fail, when installed via the Apple Store.

Applications are failing with Code Signature Invalid.

Before Shot: https://prnt.sc/vrwudb

How to solve (in some cases)

Option 1:

Based on: https://discussions.apple.com/thread/252037712?answerId=253982651022#253982651022

Credits to user SoftMusic.

Download this, and place(unzip if you have to) in your Desktop:

MediaFire 1: http://www.mediafire.com/file/m2ky3mrnon6jy49/valid.sqlite3.zip/file

MediaFire 2(in case link one does not work): http://www.mediafire.com/file/9heurc0l3ygw6za/valid.sqlite3/file

Once downloaded:

sudo killall -9 trustd; sudo cp ~/Desktop/valid.sqlite3 /Library/Keychains/crls/valid.sqlite3

This should do it.

Option 2:

Based on: https://discussions.apple.com/thread/252030900

Disable Gatekeeper ( THIS IS DANGEROUS be very aware, this makes you succeptible to malware, if you install things from random sources.)

sudo spctl --master-disable

Install XCode

xcode-select install

Sign App Yourself (example given with Pages)

sudo codesign --deep -fs - /Applications/Pages.app

After Shot: https://prnt.sc/vrwv3n

NB!: I am looking for ways to fix applications that install helpers (think Docker and MacOS Server), because one seems unable to self-sign the helpers.

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