I wanted use Visual Studio code on mac as well since I was using it on my Windows but when I installed and tried to open it, I got this error message from Mac OS Catalina.
The error looks like this:
“Visual Studio Code” can’t be opened because Apple cannot check it for malicious software.
This software needs to be updated. Contact the developer for more information.
I tried to uninstall and re-install VS Code as well as updated the Mac OS but it didn’t work out well. At the end I found solution to this problem. Mac OS Catalina requires apps to be notarized by Apple. Your version of Visual Studio Code is yet to be updated by Microsoft for the new OS.
Follow these 2 steps.
1. Just move the app to the Applications folder.
2. Open Terminal.app and then write/copy the following command in the terminal app and hit enter.
//add the following line xattr -d com.apple.quarantine /Applications/'Visual Studio Code.app'
Source: Stack Overflow