In their recent version of macOS, named “Catalina” (10.15), Apple introduced a feature protecting users from executing malicious software downloaded from the Internet. To separate “good” from “bad” software, Apple implemented a so called “notarization” process, and software which has not been „notarized“ cannot be executed on macOS Catalina without further ado.
After starting QF-Test a message is shown that Apple cannot check QF-Test for malicious software.