Mac OSX Catalina: can’t be opened because Apple cannot check for malicious software macOS cannot verify that this app is free from malware.
Solution:
- check with Security&Privacy settings under System Preferences to lift the Gatekeeper blocks, and fix alert messages.
- when you are using Catalina, the warning message reappears every time you open the non-notarized app
- open Terminal and run the cmd below
xattr -d com.apple.quarantine /Applications/<your App's Name>.app
e.g.:
xattr -d com.apple.quarantine /Applications/qbittorrent.app