1. 说明

「A.app」 can』t be opened because Apple cannot check it for malicious software.

2. 解决方案

方法一：

xattr -d com.apple.quarantine /Applications/A.app

方法二：

sudo spctl --master-disable

Security & Privacy is Anywhere.

sudo spctl --master-enable

3. 参考

• How to Fix 「App Is Damaged and Can』t Be Opened」 on Mac
• 弹出App can』t be opened because Apple cannot check it for malicious software的解决方法 - 简书