Skip to main content
  1. Home
  2. Computing
  3. Apple
  4. News

MacOS Catalina already has a supplemental update, and you should download it now

Add as a preferred source on Google
New MacOS Catalina Update
Image used with permission by copyright holder

Apple released a supplemental update for MacOS 10.15 Catalina on Tuesday measuring 985.4MB. The company recommends that all Catalina users install this update, as it brings fixes and improved reliability. Mac owners must restart their device to complete the update.

Here are the release notes:

“macOS Catalina Supplemental Update

Recommended Videos

The macOS Catalina Supplemental Update includes installation and reliability improvements and is recommended for all users.

This update:

  • Improves installation reliability of macOS Catalina on Macs with low disk space
  • Fixes an issue that prevented Setup Assistant from completing during some installations
  • Resolves an issue that prevents accepting iCloud Terms and Conditions when multiple iCloud accounts are logged in
  • Improves the reliability of saving Game Center data when playing Apple Arcade games offline

For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222

MacOS 10.15 Catalina arrived in early October bringing new apps for music, Apple TV, and podcasts to Mac owners.”

Catalina also includes a new “Sidecar” feature that extends or mirrors the desktop to an iPad running iOS 13 serving as a secondary display. This apparently only works “officially” on specific Macs, like the 2018 MacBook Air and the 2019 Mac Pro, though users can enter a lengthy Terminal command to enable Sidecar on older Macs:

defaults write com.apple.sidecar.display AllowAllDevices -bool true; defaults write com.apple.sidecar.display hasShownPref -bool true; open /System/Library/PreferencePanes/Sidecar.prefPane

Other new features spied in Catalina include weak password warnings in Safari, a “block sender” tool in the Mail app, an updated Reminders app, larger photo previews, colored tints covering your entire screen, a new Apple ID location in System Preferences, and more.

The removal of iTunes may be a big surprise for Mac owners after the update. Rather than cram your entire media library into a single place, you can now access albums in the Music app and your TV shows and movies on the Apple TV app. Users can still purchase media through these apps, or enable the iTunes Store interface by clicking the app’s name in the menu bar followed by Preferences.

A previous report suggests that Mac owners may want to hold off on the Catalina upgrade. Many users now report of missing or incomplete messages after its installation. Others claim moving emails between mailboxes results in blank messages.

Kevin Parrish
Kevin started taking PCs apart in the 90s when Quake was on the way and his PC lacked the required components. Since then…
Apple’s Hide My Email feature has an unfixed bug that leaves email addresses exposed
100% exploitable in limited testing, known since June 2025, and still unfixed as of today.
apple-merging-sign-in-with-apple-hide-my-email-icloud+

Apple has been selling Hide My Email to keep your real email address hidden, but it has a vulnerability that does the exact opposite. The worst part is that the company has known about it for a year. 

Hide My Email, part of Apple’s paid iCloud+ subscription, lets users generate anonymous email addresses for signing up to a website, so that their personal or work email remains free of promotional emails and spam. 

Read more
I hate sharing my Mac, but a face-unlocking app finally cured my privacy paranoia
Someone finally built the app locker every Mac user has been asking for.
FaceGate in action on Mac

If you have ever handed your Mac to a friend, family member, or coworker for "just a minute," you know the mild panic that follows. Sure, your Mac has a lock screen, but once someone is past it, they can open Messages, Photos, Notes, Mail, WhatsApp, and your browser.

iPhones had the same issue, but Apple solved it by adding an app lock feature with the iOS 18 update. Sadly, no such feature exists for macOS. That’s where the new FaceGate app for Mac can help you. It’s a free and open-source app that lets you lock apps on your Mac and even has some novel tricks up its sleeve. So, let’s talk about it, shall we?

Read more
The charm of a tiny Windows tablet is apparently dead at Microsoft. Long live the Surface Go!
Microsoft’s budget Surface era may be over
Microsoft Surface Go 3 stand.

Microsoft might be cleaning up its Surface lineup. According to Windows Central, Microsoft has stopped manufacturing the Surface Go and Surface Laptop Go lines, with no successors currently planned. Surface Go 4 and Surface Laptop Go 3 are reportedly out of stock in most places, and once remaining retail stock is gone, that may be it.

If this is true, then we are looking at the end of the brand's budget Surface PCs as Microsoft has plenty of premium Windows hardware.

Read more