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6 Reasons Not to Install macOS Catalina & 14 Reasons to Install macOS 10.15.5 Today

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Should you install macOS 10.15.5 on your Mac? This is the latest macOS Catalina update to arrive in 2020. There are a lot of important reasons to install this new macOS update and good reasons that you may finally want to go from macOS Mojave to macOS Catalina. Here’s a look at the reasons not to install macOS 10.15.5 and the reasons you should.

Apple released the macOS 10.15.5 update on May 27th with a smart battery health management feature and important fixes for a Finder freezing issue. On June 1st Apple released the macOS 10.15.5 supplemental update with three main security fixes, including one tied to the iOS 13.5 jailbreak.

If you are updating to macOS 10.15.5 from 10.15.4, you should go straight to the supplemental update, but if you updated in May, you will see this as a standalone update for your Mac. These build on the two macOS 10.15.4 updates that arrived with iCloud Drive folder sharing, better Screen Time controls, Safari and Music features, Accessibility, and fixes for FaceTiming older macs.

The macOS 10.15.5 update includes a bug or an intentional change that is problematic for some users, and it may be a reason to hold off on installing macOS 10.15.5 for now. It’s difficult to create a bootable backup on macOS 10.15.5 with APFS unless you use an updated tool. There are more details on this here if you use this option. You can learn more about the macOS 10.15.5 security changes here.

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macOS Catilina is more stable than it was in late 2019 when it first arrived. That said, you should make sure that you pay attention to your situation and to early reports before you install this update. Many Apple Stores remain closed, so if you need support for a problem, it will not be as easy as going into a store.

The macOS 10.15.5 update is a significant update that will take time to download and install. Once you decide to install, make sure you follow these steps to prepare before you install 10.15.5.

There is still a good chance that you tun into macOS Catalina problems on any of the versions, even macOS 10.15.5. Here’s how to fix many common macOS Catalina problems.

Our guide will help you decide if you should install macOS Catalina today, or if you are better off waiting a few days or weeks. Keep in mind that macOS 10.16 is coming this fall and we should learn about the update this summer at WWDC, but it’s too far off to wait for at this point.

While updating iOS may be a simple decision, the number of things your Mac can connect to and the new security restrictions could mean that you are better off waiting even if you normally install updates early.

Why you should install macOS Catalina today, and why you should wait.

Why you should install macOS Catalina today, and why you should wait.

Why You Should Install macOS Catalina

  1. Install for macOS Fixes & Security
  2. Install for Better Battery Management
  3. Install for iCloud Drive Folder Sharing
  4. Using Your iPad as a Display + Apple Pencil
  5. Apple TV, Podcasts & Apple Music on Your Mac
  6. If You Use Apple Arcade
  7. Upgraded Photos App
  8. New and Improved Notes
  9. Reminders You Can Finally Use
  10. For Screen Time on Your Mac
  11. For Better Security And Privacy
  12. So You Don’t Lose Your Mac
  13. For Better Apple Watch Integration
  14. Better Accessibility
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Why You Shouldn’t Install macOS Catalina Yet

  1. If You Aren’t Prepared
  2. If you Rely on 32 Bit Apps
  3. You Use Specialized Software or Hardware
  4. If You Are Worried About macOS Catalina Problems
  5. If Your Situation is Fluid
  6. If You Are Using an Old Mac

If you’re currently on the fence, this is what you need to know about whether the time is right to install the macOS Catalina update today or if you should join a growing number of folks that are holding off.

Read: Get the Best Work From Home Chair You Can Buy

Install for macOS 10.15.4 Fixes and Security Updates

Install for macOS 10.15.4 Fixes and Security Updates

If you are on macOS Mojave or an older version of macOS 10.15, you should install this update to get the latest security fixes and new features that come with macOS. These include security updates that help keep your data safe and updates that patch bugs and other macOS Catalina problems.

The macOS 10.15.5 update includes the following fixes;

Battery Health Management
- Battery health management to help maximize battery lifespan for Mac notebooks
- Energy Saver preference pane now displays battery condition and recommends if the battery needs to be serviced
- Option to disable battery health management
- For more information, please visit https://support.apple.com/kb/HT211094

‌FaceTime‌ Prominence Preference
- Option to control automatic prominence on Group ‌FaceTime‌ calls so video tiles do not change size when a participant speaks

Calibration Fine-Tuning for Pro Display XDR
- Controls to fine-tune the built-in calibration of your Pro Display XDR by adjusting the white point and luminance for a precise match to your own display calibration target

This update also includes bug fixes and other improvements.
- Fixes an issue that may prevent Reminders from sending notifications for recurring reminders
- Addresses an issue that may prevent password entry on the login screen
- Fixes an issue where System Preferences would continue to show a notification badge even after installing an update
- Resolves an issue where the built-in camera may not be detected when trying to use it after using a video conferencing app
- Addresses an issue for Mac computers with the Apple T2 Security Chip where internal speakers may not appear as a sound output device in Sound preferences
- Fixes a stability issue with uploading and downloading media files from iCloud Photo Library while your Mac is asleep
- Resolves a stability issue when transferring large amounts of data to RAID volumes
- Fixes an issue where the Reduce Motion Accessibility preference did not reduce the speed of animations in a ‌FaceTime‌ group call


We will also see a list of security updates in this, which are disclosed on this security page.

The macOS 10.15.5 supplemental update includes;

  • Impact: An application may be able to execute arbitrary code with kernel privileges
  • Description: A memory consumption issue was addressed with improved memory handling.
  • CVE-2020-9859: unc0ver

If you've skipped any updates, you will also get the following fixes, which can help improve and solve many problems and bugs. The previous update included the following fixes;


  • High Dynamic Range output to HDR10-compatible third-party displays and TVs connected with DisplayPort or HDMI
  • OAuth authentication support with Outlook.com accounts for improved security
  • CalDav migration support when upgrading to iCloud reminders on a secondary device
  • Resolves an issue where text copied between apps may appear invisible when Dark Mode is active
  • Fixes an issue in Safari where a CAPTCHA tile may display incorrectly
  • Resolves an issue where Reminders may send notifications for completed reminders
  • Fixes an issue with screen brightness for the LG UltraFine 5K display after waking from sleep
  • 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

If you are on the edge, you may want to wait for macOS 10.15.5 reviews.

Last update on 2020-06-06. This post may contain affiliate links. Click here to read our disclosure policy for more details. Images via Amazon API

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