Apple removed TNT’s certificate, so the app will crash after July 12th. The current solution is to sign it yourself.
Run in Terminal
codesign --force --deep --sign - /Applications/name.app
Requisite: Xcode or the Apple Command Line Tools
To install, execute
in the terminal emulator of your choice, and the macOS GUI will give you the option to install Xcode (from the Mac App Store) or the CLTs. If you install Xcode, launch it at least once to complete the installation and agree to the license.
Alternatively, you can use CodeSigner to sign some apps.
codesigner /Applications/Parallels\ Desktop.app
Version 0.9.3 beta 4:
FileName: CodeSigner 0.9.3 beta 4.zip [3.83 MB]
FileSize: 3.83 MB
Download CodeSigner 0.9.3 – If Crashes when opening