Download macOS Catalina 10.15.4 Supplemental Update

System Requirements: macOS Catalina 10.15.4

File Size: 1.02 GB

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macOS Catalina 10.15.4 supplemental update improves the stability and security of your Mac.

  • 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

Some features may not be available in 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

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