How to Resolve macOS Big Sur App Compatibility Issues

Edited 1 week ago by ExtremeHow Editorial Team

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Apple's macOS Big Sur has brought many exciting new features and a substantial redesign to the beloved operating system. However, like any major software update, it has also introduced some compatibility issues with various third-party apps. If you've recently upgraded to macOS Big Sur and find that some of your important apps aren't working properly, you're not alone. This document aims to guide you in resolving these compatibility issues in a simple and user-friendly way.

Understanding app compatibility issues

App compatibility issues arise when an application is not updated to work with the new operating system. Developers need to adapt their apps to the changes in system architecture, libraries, and other underlying components that may come in the new OS. In the case of Big Sur, this is notable because Apple has made significant design and infrastructure changes.

Common symptoms of compatibility issues

If an app is incompatible with macOS Big Sur, you may notice several symptoms:

• The app crashes instantly or suddenly as you use it.
• The app simply refuses to launch.
• It is missing some features or has graphical glitches.
• You receive error messages related to system permissions or libraries.
• The app experiences sluggish performance or abnormally high CPU usage.

Step-by-step solutions to fix compatibility issues

The following steps detail possible solutions to address app compatibility issues on macOS Big Sur. It's important to try each method and find the one that works for your specific case.

1. Confirm that your apps are up-to-date

The first and easiest step is to make sure all your apps are updated to their latest versions. Traditionally, developers release updates with major OS releases to ensure compatibility. Here's how you can check for updates:

App Store Applications:

1. Open the App Store on your Mac.
2. Click "Updates" in the sidebar.
3. Install any updates available for your applications.

Non-App Store applications:

1. Open the app directly to check for any update notifications.
2. Look for an option like "Check for Updates" in the app's menu or visit the developer's website.

2. Check the app's compatibility with Big Sur

Before going through extensive troubleshooting, it is advisable to check if the respective app is officially compatible with Big Sur. Many developers list compatible systems on their website or documentation pages. Sometimes a simple search with "macOS Big Sur compatibility" along with the app's name can give you a quick answer.

3. Update your macOS

Apple frequently releases patches and updates for macOS that can resolve compatibility issues with apps. Here's how to make sure your macOS is up to date:

1. Click on the Apple logo in the top left corner of your screen.
2. Select "System Preferences" from the dropdown menu.
3. Select "Software Update."
4. Click “Update Now” if an update is available.

4. Reinstall the application

Sometimes, app files can become corrupted during an update. Reinstalling can often resolve these issues. Follow these steps:

1. Delete the current version of the app. You can do this by dragging it to the trash.
2. Visit the developer's website to re-download the app.
3. Follow the installation instructions given on the website.

5. Check and adjust app permissions

Apple has enhanced security measures with each macOS update. Some apps may require appropriate permissions to work correctly on Big Sur. You can adjust these settings:

1. Go to "System Preferences" from the Apple menu.
2. Select "Security & Privacy" and click the "Privacy" tab.
3. Review the permissions required by the app, such as “Files and Folders,” “Full Disk Access,” or “Accessibility,” and make sure they are enabled.

If an app is unexpectedly asking for permission, verify the legitimacy of the app before granting access.

6. Review Activity Monitor for performance issues

The Activity Monitor tool can help you identify apps that are causing performance issues. To use it:

1. Open "Finder" and go to "Applications" > "Utilities" > "Activity Monitor."
2. Check the CPU tab for apps using excessive resources.
3. If an app is consuming a lot of data, consider closing and reopening it.

If the problem with the app persists, it could be a sign of a compatibility issue.

7. Use Rosetta 2 for Intel-based applications

macOS Big Sur supports Apple Silicon M1 chips, and you may encounter problems if you're trying to run Intel-based applications. Rosetta 2 helps translate these apps for your M1 Mac. Most users should have Rosetta 2 installed automatically, but if not, open Terminal and type:

softwareupdate --install-rosetta

After installation, try opening the application again.

8. Handle kernel extensions and system extensions

Some older apps may rely on kernel extensions (kexts). With Big Sur, Apple has blocked the use of third-party kernel extensions for security reasons. If your app insists on using them, look for a version update that doesn't rely on kernel extensions or contact the developer for assistance.

Additional troubleshooting steps

If all else fails, you can try the additional troubleshooting steps below.

Testing in Safe Mode

Safe Mode disables certain processes and third-party extensions. Running your Mac in Safe Mode can help identify if extensions or background apps are causing the problem:

1. Shut down your Mac.
2. Turn it on again and immediately press and hold the Shift key until you reach the login screen.
3. Log in and check if the problematic app is working or not.

If the app works correctly in safe mode, there might be a conflict with startup items or extensions.

Consult the console logs

The Console app can be used to view the system log and may contain information about what causes the app to fail:

1. Go to "Finder" > "Applications" > "Utilities" > "Console."
2. Filter the log to see messages containing the app's name.
3. Keep an eye out for recurring errors or patterns when launching the app.

These logs can be shared with the app's support team for further analysis.

Reaching out for help

If none of the above solutions resolve your issues, consider contacting the app's support team directly. Provide them with details such as the error message, the steps you've already taken, and whether the problem persists in safe mode or when using Rosetta 2.

Final thoughts

App compatibility issues after a macOS update can be frustrating. However, by following the steps mentioned and staying patient, you can effectively identify and fix these issues. Software development is an ongoing process, and developers work hard to ensure that their applications run seamlessly on each new system release. Always keep your applications and macOS updated to enjoy the best possible experience.

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