5 Common macOS Catalina Beta Issues and How to Fix them

This guide will show you how to fix some of the common macOS Catalina beta issues users encounter when testing Apple’s new version of macOS.

Announced in early June, the new macOS Catalina update won’t arrive for everyone until this fall, but there’s already a developer macOS Catalina beta, and a public beta is coming in July.

If you decide to try the new software, we’ll help you fix some of the common macOS Catalina beta issues that are slowing users down without having to wait for Apple to release an update. If you’re overwhelmed by issues, you can revert to macOS Mojave fairly easily.

Here are the most common macOS Catalina beta problems and how to fix them yourself, as well as where to look for help.

How to Fix macOS Catalina Beta Installation Issues

Fix macOS Catalina beta installation issues.

There are two macOS Catalina beta installation issues we’ve seen, both of which are pretty easy to fix. One of the biggest complaints is that after joining the macOS Catalina beta program it started downloading the beta without much choice. This is because you have an installer that you can use to choose the installation location. If you want to install the macOS Catalina beta on another volume or partition, don’t worry. After starting the installer, you can choose the location.

The other macOS Catalina beta installation issue we’ve seen is caused by users unable to install the beta. If you run into this issue, you need to make sure you have enough space on the drive or volume you want to install. This is by far the most common problem. Another thing you may need to do is restart your computer or reboot in safe mode.

We have yet to see a “macOS could not be installed on your computer” (OSStatus error 2) as we saw with the macOS Mojave beta.

How to Fix macOS Catalina Beta Apps Not Working

Apps not working in macOS Catalina beta is a common problem. There are many problems here and there are some things you can do to try and fix them.

If the app works for others, try uninstalling and reinstalling the app. You can also check for updates to see if the developer has built any additional support.

The next step is to look for the beta version of the app designed to work with macOS Catalina. It’s still pretty early, but check out Twitter and their support page. If it’s a custom app that connects to the system, there’s a greater chance you’ll need to do this.

Finally, some apps will not work on macOS Catalina if they are 32-bit. If you’re running a 32-bit application, you’ll need to look for an alternative or go back to macOS Mojave.

Here is a list of apps people say it works with macOS Catalina and those that don’t,

How to Fix macOS Catalina Beta Internet Issues

While not common, we’ve seen a report of Internet not working on macOS Catalina beta. If you run into this issue and you’re running an app called Little Snitch, uninstall it. It is not compatible with macOS Catalina and has blocked the user from using the internet. You can also update Little Snitch to nightly update and you should be able to use it just fine.

If you have WiFi problems, try turning WiFi off and then back on, but thankfully we haven’t heard of any major issues yet.

How to Fix macOS Catalina Beta Sidecar Issues

How to fix Side Car issues in macOS Catalina beta

How to fix Side Car issues in macOS Catalina beta

Apple now lets you use the iPad as a display for your Mac with a wireless or wired connection. If you can’t use Side Car in macOS Catalina beta, here is what you need to do.

First, you need the iPadOS beta version installed on your iPad to use it. Doesn’t work with iOS 12. So if you tried and failed, go install iPadOS.

If Side Car performance is lagging or not working properly, you can try connecting via cable instead of wireless. Many users say it helps performance.

Another thing to consider is that Side Car only works on newer Apple computers. This includes the following models;

If your Mac is not listed, you can: upgrade to a new Macotherwise you cannot use the Side Car feature.

How to Fix Annoying macOS Catalina Beta Issues

If you’re unable to use the macOS Catalina beta with the current issues you’re experiencing, you can revert to macOS Mojave. You can simply revert to macOS Mojave if you installed it on a separate partition or volume, but if you didn’t you’ll need to restore a Time Machine backup.

Here’s our guide on how to downgrade from macOS Catalina beta to macOS Mojave so you can revert to the latest stable version of macOS.

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