macOS Build 19E287

Install macOS Catalina App has been updated - If you downloaded macOS Catalina from the App Store prior to today, and you want to have the latest version on your backup installer USB, simply log into the Mac App Store and click Download. The updated Install macOS Catalina App can be found in the Applications folder.

This update has been rolled into the standard 10.15.4 Update and Combo Update.

Fixes an issue where Mac computers running macOS Catalina 10.15.4 could not participate in FaceTime calls with devices running iOS 9.3.6 and earlier or OS X El Capitan 10.11.6 and earlier

Resolves an issue where you may repeatedly receive a password prompt for an Office 365 account

Fixes an issue where MacBook Air (Retina, 13-inch, 2020) may hang in Setup Assistant or when disconnecting and reconnecting a 4K or 5K external display

Resolves an issue where a USB-C port in your Mac may become unresponsive.

Today Apple released macOS 10.15.4 Supplemental Update, a major software update to macOS Catalina. Update any supported system using the built-in Software Update functionality through the System Preferences pane or by using the standalone installer available from Apple.com.macOS Catalina 10.15.4 supplemental update improves the stability and security of your Mac.Some features may not be available for all regions, or on all Apple devices. For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222 Testing is now underway- this post will be updated. Good luck, and let us know how it goes! Report your results here.