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macOS 10.15.1 Problems: 5 Things to Know



With the macOS 10.15.1 update, Apple cleans up macOS Catalina and fixes a number of issues and problems, frustrating users since the original release.

macOS 10.15.1 is a major update for Catalina, adding in new features and a lengthy list of bug fixes for your Mac. This is a good shift from macOS 10.15, which many users are happy about.

That said, this isn’t a perfect upgrade. There are some macOS 10.15.1 problems that are annoying users, lingering performance problems and even a few brand new issues with this update.

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This post focuses on the macOS Catalina errors, issues, and problems that we know about so far. While some of the issues carry over from macOS Mojave, many are new.

In this guide to macOS Catalina problems, we help you understand the current state of macOS 10.15.1 on new and old Macs. When possible we show you where to find fixes and in some cases explicit instructions not to update if you rely on third-party hardware.

Read: How to Fix macOS Catalina Problems

We’ll also cover the installation options and the macOS Catalina to macOS Mojave downgrade option if you already installed Catalina and you need to go back.

macOS 10.15.1 Problems

We are already seeing macOS Catalina problems.

We are already seeing macOS Catalina problems.

There are already some macOS Catalina problems that are annoying users. We didn’t run into the same install issues we did with the main update, but there are still some problems. Some of the biggest issues include;

One of the most concerning problems is Mail data loss in macOS Catalina that Michael Tsai reports. He develops Spam Sieve and EagleFiler for Apple Mail, and he shares complaints from users who are seeing email content missing when moving between mailboxes. Two major issues include messages missing or incomplete after updating and error when moving messages with an AppleScript.

“Moving messages between mailboxes, both via drag-and-drop and AppleScript, can result in a blank message (only headers) on the Mac. If the message was moved to a server mailbox, other devices see the message as deleted. And eventually, this syncs back to the first Mac, where the message disappears as well.”

We ran into slow macOS Catalina downloads and two “The network connection was lost.” error messages while trying to download the beta. If this happens to you, simply retry and it could fix the problem.

We’re also seeing reports of apps and third-party accessories not working. Specifically if you use Logic Pro X with adapters, you should hold off. Native Instruments says not to update.

Normally we will also see connectivity complaints with WiFi, Bluetooth and other errors as more people install the update.

Where to Find Feedback

You can find feedback on the macOS Catalina update to get help from other users and to learn about what is going on. This is great if you don’t want to be an early adopter, and can let someone else fix the problems for you.

We’re almost done with our list of reasons to install macOS Catalina and reasons to wait, which can help you decide if it is time and to understand the current situation.

We recommend looking at macOS Catalina problems on YouTube, on the Apple Discussion Forums and on Twitter as well as the MacRumors forums. A little prep and research can help dramatically.

How to Fix macOS Catalina Problems

While Apple will need to fix some of the macOS Catalina problems, you can solve some issues on your own. We have a full guide on how to fix macOS Catalina problems, which will help you solve most issues on your own.

If you cannot download or install macOS Catalina, try restarting the download, restarting your Mac and switching to a wired connection. If your device feels sluggish after the update, you may need to simply wait for the background processes to finish. Give it a day or two.

In cases where battery life takes a hit, the background processes could be a culprit, but you can use this guide to fix bad macOS Catalina battery life.

If you can’t use WiFi, Bluetooth or you experience sound problems, try restarting your Mac or turning WiFi or Bluetooth off and then back on. You can also reach out to Apple Support via Twitter or via Apple’s website.

If you still can’t fix the problem, you may need to contact Apple to schedule a Genius Bar visit to get help.

macOS Catalina Downgrade Options

You can downgrade from macOS Catalina to macOS Mojave.

You can downgrade from macOS Catalina to macOS Mojave.

It is possible to downgrade from macOS Catalina to macOS Mojave. There is no time limit and this is very easy if you have a good backup for your Mac. To do this, you just need to start your Mac in safe mode and choose Restore from Time Machine Backup.

This will take some time, so it’s not to be done lightly, but if you are no longer able to use your Mac like you need to, it could be the best option until Apple releases an update for the new macOS 10.15 version.

What’s Next for macOS?

We will likely see several supplemental updates for macOS 10.15.1 over the next few months and then we will likely see a macOS 10.15.2 update later this year or in early 2020.

6 Reasons Not to Install macOS Catalina & 12 Reasons to Install macOS 10.15.2 Today

Install for macOS 10.15.2 Fixes

Install for macOS 10.15.2 Fixes

Apple just released macOS 10.15.2, a new bug fix update that also adds in some new features. This update includes the following fixes and features;

Apple News

  • New layout for Apple News+ stories from The Wall Street Journal and other leading newspapers


  • Get links to related stories or more stories from the same publication at the end of an article
  • “Breaking” and “Developing” labels for Top Stories
  • Stories from Apple News are now available in Canada in English and French

This update also includes the following bug fixes and improvements:


  • Restores the column browser view for managing the music library
  • Resolves an issue that may prevent album artwork from appearing
  • Fixes an issue that may reset music equalizer settings during playback

iTunes Remote

  • Adds support for using an iPhone or iPad to remotely control the Music and TV apps on a Mac


  • Resolves an issue that may cause some .AVI and .MP4 files to appear as unsupported
  • Fixes an issue that prevents newly created folders from appearing in Albums view
  • Addresses an issue where manually sorted images in an album may be printed or exported out of order
  • Fixes an issue that prevents the zoom-to-crop tool from working in a print preview


  • Addresses an issue that may cause Mail Preferences to open with a blank window
  • Resolves an issue that may prevent using undo from retrieving deleted mail


  • Improves the reliability of syncing books and audiobooks to your iPad or iPhone through Finder
  • Fixes an issue where reminders may be out of order in the Today smart list in the Reminders app
  • Resolves an issue that may cause slow typing performance in the Notes app

Apple also includes security fixes. If you are on the edge, you may want to wait for macOS 10.15.2 reviews. 

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