Debugging macOS: Use a fresh new user account to help isolate your problem

Apple has increasingly made it hard to mess with macOS system files. That’s true whether you intentionally want to extend macOS’s functionality or if a malicious party is trying to install and activate a virus. .

However, many system components and all Apple and third-party apps rely on preferences and other files to store your custom settings, caches for work in progress, and other data.

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