Apple’s latest macOS release is breaking security software, network connections

Something’s wrong with macOS Sequoia, and it’s breaking security software installed on some updated Apple systems.

Sequoia, aka macOS 15, was released on Monday of last week. By Thursday, reports of problems with security products – from vendors including CrowdStrike and Microsoft – had begun to pile up with no explanation from Apple, as first reported by TechCrunch.

Objective-See founder and macOS security expert Patrick Wardle suggested one possible cause for the problems on X: networking bug(s) in Sequoia. He noted he had seen security bulletins from Microsoft, CrowdStrike, and others warning about the issues, and mentioned that Apple was well aware of them.