There are a number of macOS Mojave beta problems that are annoying Mac users who are testing out the newest version of Apple’s software. This is what you can do to fix macOS Mojave problems and errors without waiting for the next upgrade or downgrading to macOS High Sierra.
The developer macOS Mojave beta is out now and a public beta is coming out soon. When things work great, you can test out the new macOS Mojave features before the full release this fall. Along with the new features, you will see errors, bugs and problems that are simply a part of beta software.
So far we are seeing macOS Mojave beta users complain about apps not working, apps crashing, Mac App Store problems, login issues, macs crashing and other problems.
With such an early beta, problems will be more rampant, and some of the new features are not enabled yet. If you run into a problem that stops you from using your Mac, you may need to downgrade to macOS High Sierra. Problems are one of the biggest reasons not to install the macOS Mojave beta.
These are the most common macOS Mojave beta problems, and you to fix them if they stop you from using your Mac.
First Step to Fix macOS Mojave Beta Problems
Now that the macOS Mojave beta program is in full swing, the best thing you can do to fix any annoying macOS Mojave problems, is to check for an update. As of July 5th, we are on the third macOS Mojave beta for developers and expect the second public beta soon.
These beta updates include fixes and sometimes include new features. In most cases performance, battery life and compatibility improve with each beta release. You can wait a little while to see if other users report issues with the new beta, since you can’t roll back to a previous macOS Mojave beta.
How to Fix macOS Mojave Beta Installation Problems
When you try to install the macOS Mojave beta, you may run into issues. Some users are seeing “macOS could not be installed on your computer” (OSStatus error 2). When I tried to install the macOS Mojave beta on my MacBook I could not proceed with the installation.
The first thing to do is close the installer and try again. In my case there were two installers open, which was the problem. If that fails, restart your computer and try the installation again.
If you run into the more annoying OSStatus error 2 problem, you will likely need to restore to your macOS High Sierra backup and then try the upgrade again. The user who ran into this problem had to do a clean install of macOS High Sierra and then upgrade to macOS Mojave beta.
One other thing you may need to do is re-download the macOS Mojave beta, if you get any kind of error about a corrupt file.
How to Fix Apps Not Working in macOS Mojave Beta
There are a lot of apps that don’t work on the macOS Mojave beta. If you have an app that isn’t working on the beta there are some things you can try.
The first thing to try is restarting your Mac. If that fails, you should try uninstalling the app and reinstalling it. These steps can solve some issues with apps on new operating systems.
If that doesn’t fix it, you can check this list of apps that don’t work on macOS Mojave, and read the comments to see if anyone finds a workaround. Some developers will offer beta version that support the macOS Mojave beta. Check to see if the developer is running any kind of public app beta.
Don’t expect all of your apps to work. And don’t expect all developers to help you get them running on the beta.
How to Fix macOS Mojave Beta Bluetooth Problems
Another macOS Mojave beta problem is that Bluetooth is not working. In this case users cannot connect to Bluetooth and cannot turn Bluetooth off.
If you run into this problem on your Mac, you can fix it by deleting the Bluetooth plist file. This is located in Library/Preferences. Make a copy of com.apple.Bluetooth.plist on your desktop or another folder and then delete the file. You’ll have to type your admin password and then restart your Mac. This should fix the problems, but you will need to reconnect your Bluetooth devices.
How to Fix macOS Mojave Beta Crashing at Login
Another macOS Mojave beta problem is the computer crashing at login. This is likely due to an incompatible app or service in your startup.
To fix this boot into safe mode. Hold the shift key when the mac is restarting and let it go when the Apple logo appears. Once in safe mode, go to System Preferences -> Users & Groups -> Login Items. Uncheck as many items as you can and then restart your computer in normal mode.
This should solve the problem, and you can try each app one by one to see if it fixes things.
How to Fix macOS Mojave Beta Freezing & Performance Problems
If your Mac is freezing often with the macOS Mojave beta installed or you are experiencing slowdowns, you can take some steps to try to fix the problems.
- Update all of your apps.
- Check the Activity Monitor for apps that are going crazy
- Restart your Mac
- In a week or two, check for a new macOS Mojave beta release.
Other than that, you will need to live with macOS Mojave freezes or slowdowns unless you want to downgrade to macOS High Sierra or do a clean install of macOS High Sierra and then upgrade to the macOS Mojave beta.
How to Fix macOS Mojave Beta Stuck at Login Screen
If you get stuck at the macOS Mojave login screen on the beta, you likely need to delete some plist files on your Mac.
- To do this, you need to boot into safe mode. Hold the shift key when the mac is restarting and let it go when the Apple logo appears.
- Go to Library/Preferences and make a copy of this folder.
- Try deleting plist files for desktop or finder and then restarting to see if that fixes the problem.
This could take a while to figure out if you do it one by one. Here’s more on the forums to help you out.
How to Fix Annoying macOS Mojave Beta Problems
If nothing else works and you cannot fix your macOS Mojave beta problems, the only thing left to do is downgrade to macOS High Sierra. This is time consuming, but it will get you back to exactly where you were before installing the beta and is tshould fix most of your problems.
You should have made a Time Machine backup before installing the beta, and now all you need to do is downgrade by installing that backup.
Boot into recovery mode, delete the macOS High Sierra beta partition and then install macOS High Sierra. Once this is done choose to restore from your Time Machine backup. Here’s an overview that still works going back to macOS High Sierra.
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