Apple today released a new supplemental update for macOS Catalina, nearly one week after releasing the first supplemental update and two weeks after the launch of macOS Catalina.

The update can be downloaded through the Software Update section of the System Preferences app, but it may be limited to those who didn't download the first supplemental update as it appears to be a minor incremental change that offers the same release notes as the first version.

test macOS 10

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

Apple is also working on a macOS Catalina 10.15.1 update, which is available to developers at the current time.

Related Forum: macOS Catalina

Top Rated Comments

Xenc Avatar
79 months ago
macos_catalina_release-final_FINAL.dmg
Score: 39 Votes (Like | Disagree)
konqerror Avatar
79 months ago

i dont really understand all the griping about updates this season between iOS and catalina. they're not the most solid of releases, but i'd prefer apple to be on more frequent updating schedules.
Your interpretation: Apple is fixing bugs rapidly
Other people's interpretation: Apple has an unacceptable number of bugs that need rapid fixes
Score: 22 Votes (Like | Disagree)
urbanmacUser Avatar
79 months ago
This is worse than iOS updates
Score: 17 Votes (Like | Disagree)
Eorlas Avatar
79 months ago

This is worse than iOS updates
i dont really understand all the griping about updates this season between iOS and catalina. they're not the most solid of releases, but i'd prefer apple to be on more frequent updating schedules.

they tend to just release the occasional major .x update, but otherwise nothing important happens except for once a year. so especially in the case of iOS, the software gets incredibly stale with the lack of progress, which mostly only takes place with jailbreak tweaks.
Score: 16 Votes (Like | Disagree)
Joniz Avatar
79 months ago
i dont really understand all the griping about updates this season between iOS and catalina. they're not the most solid of releases, but i'd prefer apple to be on more frequent updating schedules.
Personally, I’d prefer they release fewer, rock-solid releases.
Score: 10 Votes (Like | Disagree)
Chris The Bipolarbear Avatar
79 months ago
Anyone who is having difficulties updating and Needs to download full installer?
Open terminal and run this script.
softwareupdate --fetch-full-installer
Leave terminal open whilst it downloads. It downloads to your applications Folder. To check you have correct installer right click get info New installer was created 17th October and is version 15.0.34. see screen shot correct installer is shown on left.

Attachment Image
Score: 7 Votes (Like | Disagree)

Popular Stories

iOS 26

iOS 26.1 Coming Soon: New Features for Your iPhone and Release Date

Monday October 27, 2025 7:55 am PDT by
The upcoming iOS 26.1 update includes a handful of new features and changes for iPhones, including a toggle for changing the appearance of the Liquid Glass design, "slide to stop" for alarms in the Clock app, and more. Below, we outline key details about iOS 26.1. Release Date Given that Apple has yet to seed an iOS 26.1 Release Candidate, which is typically the final beta version, the...
iOS 26

6 New Things Your iPhone Can Do in iOS 26.1

Wednesday October 29, 2025 4:22 am PDT by
Apple is about to drop iOS 26.1, the first major point release since iOS 26 was rolled out in September, and there are at least six notable changes and improvements to look forward to. We've rounded them up below. Apple has already provided developers and public beta testers with the release candidate version of iOS 26.1, which means Apple will likely roll out the update to all compatible...
maxresdefault

Apple TV 4K Could Still Launch Before 2025 Ends: All the Rumored Features

Monday October 27, 2025 4:51 pm PDT by
Apple is designing an updated version of the Apple TV 4K, and rumors suggest that it could come out sometime in the next couple of months. We're not expecting a major overhaul with design changes, but even a simple chip upgrade will bring major improvements to Apple's set-top box. Subscribe to the MacRumors YouTube channel for more videos. We've rounded up all the latest Apple TV rumors. ...
iOS 26

Apple Seeds iOS 26.1, iPadOS 26.1, and macOS Tahoe 26.1 Release Candidates

Tuesday October 28, 2025 1:07 pm PDT by
Apple today provided developers and public beta testers with the release candidate versions of upcoming iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, watchOS 26.1, and visionOS 26.1 updates for testing purposes. The RCs betas come a week after Apple released the fourth betas. The new betas can be downloaded from the Settings app on a compatible device by going to General > Software...
M6 MacBook Pro Feature 1

M6 MacBook Pro: Release Date, Pricing, and What to Expect

Monday October 27, 2025 9:15 am PDT by
Apple this month refreshed the 14-inch MacBook Pro base model with its new M5 chip, and higher-end 14-inch and 16-inch MacBook Pro models with M5 Pro and M5 Max chips are expected to follow in early 2026. However, these machines will represent the final update to the current design, with Apple reportedly developing a completely new version of the MacBook Pro packed with next-generation hardware...
iPhone 17 Pro Cosmic Orange

8 Reasons to Wait for Next Year's iPhone 18 Pro

Thursday October 30, 2025 4:42 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
macos tahoe

Here Are Apple's Release Notes for macOS Tahoe 26.1

Tuesday October 28, 2025 1:21 pm PDT by
Apple today provided developers and public beta testers with the release candidate version of macOS Tahoe 26.1, which means the update will likely see a public launch next week. The release candidate includes notes on what's in the update, so we have a full picture of the new features that Apple has included. macOS Tahoe 26.1 adds AutoMix support over AirPlay, improved FaceTime audio...
M5 MacBook Pro

Waiting for New Macs? Apple Just Shared Bad News

Friday October 31, 2025 7:32 am PDT by
Apple has just given a strong indication that it will not be releasing any additional new Macs for the remainder of the year. Apple's CFO Kevan Parekh dropped the hint during the company's earnings call on Thursday:On Mac, keep in mind, we expect to face a very difficult compare against the M4 MacBook Pro, Mac mini, and iMac launches in the year-ago quarter.Parekh essentially gave a heads up ...
ipad mini 7 feature blue

OLED iPad Mini: Release Date, Pricing, and What to Expect

Wednesday October 29, 2025 7:13 am PDT by
Rumors are stoking excitement for the next-generation iPad mini that Apple is reportedly close to launching. So what should we expect from the successor to the iPad mini 7 that Apple released over a year ago? Read on to find out. Processor and Performance Apple is working on a next-generation version of the iPad mini (codename J510/J511) that features the A19 Pro chip, according to...