Apple came up with a fourth major update to the macOS Catalina operating system on 24th March 2020 – macOS Catalina 10.15.4 Update macOS Catalina 10.15.4 is available to download from the Mac App Store, your mac will notify you of the new update available. You can install it for free using the Update feature … Continue reading macOS Catalina 10.15.4 Update