SIP still allows access to some directories, like ~/Applications, but totally locks down others like ~/System or ~/usr.

As a result, many people are getting errors where they weren’t before. While SIP was present since El Capitan, Apple expanded its protection in Mojave and above. This restriction causes most “Operation not permitted” error messages This process is typically done by official updates or Apple installers. The result is that users and third-party apps occasionally can’t read-or-write in the places that they need to work. The way SIP works is to lock down sensitive areas of the OS so only Apple can access them. System Integrity Protection (SIP) is Apple’s way of protecting your Mac from malicious software. In fact, many of these new “features” closely resemble how iOS works with app permissions on your iPhones and iPads! Starting with macOS Mojave, Apple’s added some additional security measures via SIP (System Integrity Protection) to keep your operating system running smoothly. It Starts With Apple’s System Integrity Protection

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The good news is that it’s pretty darn easy to fix–we just need to update some of your Mac’s security and protection settings! Related Posts: So what exactly is causing this frustration and how can you remedy it? Find out what causes the “Operation not permitted” error message and learn how to fix it.

MacOS is reliable and well-protected, but sometimes those protections go over the top. The “Operation not permitted” error message even appears when trying to read certain directories in the local user! It occurs when running third-party applications or after inputting command lines in Terminal-no matter how simple the request is! Many users are confronted with this irritating error message since updating to macOS Catalina-Mojave. They see this error on advanced commands like super-user sudo and change ownership chown commands but also on simple commands like the list directory command ls and others. If so you are not alone, quite a few of our advanced Mac readers tell us that their work is stymied by this “operation not permitted” error message. Working with your Mac’s Terminal Utility but getting the error message “Operation not permitted?” Are Terminal commands that used to work in macOS High Sierra and Sierra not working?

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