The latest macOS 26 Beta has put more emphasis on performance enhancements, minor tweaks, and visual polish. However, as with any beta software, testers are running into frustrating bugs and system glitches. These issues can interrupt daily tasks and create instability, especially for users who rely on their Mac for productivity. In this article, I’m going to talk about the 9 most frustrating issues and their reliable solutions. Read on…
1. macOS Freezing or Becoming Unresponsive
Be warned that too many background processes and memory leaks from unoptimized apps can cause the system to hang.
- To do so, open Activity Monitor on your Mac and force quit any unresponsive or high-memory processes.
- After that, you need to restart the Mac to clear the temporary cache and RAM usage.
- Disable login items in System Settings > General > Login Items & Extensions to reduce background startup load.
2. Apps Not Opening or Crashing Frequently
Apps may not be fully compatible with macOS 26 beta builds.
- Check for updates in the Mac App Store or developer websites. If there is an update available, install it.
- Reinstall the app to clear corrupted cache or plist files.
- Report the crash using the Feedback Assistant to notify Apple of compatibility issues.
3. Slow Boot-Up and Login Times
Beta builds can include diagnostic logs and background startup services that slow down boot times.
- Clear system and user cache files using a tool like OnyX or manually via Finder.
- Remove unnecessary login items under System Settings > General > Login Items & Extensions.
- Boot into Safe Mode to diagnose and disable problematic extensions or daemons.
4. Excessive Battery Drain on MacBooks
Background indexing and beta logging features consume more power than usual.
- Turn off Bluetooth and Wi-Fi when not in use.
- Open Activity Monitor and close energy-intensive processes.
- Enable Low Power Mode via System Settings > Battery > Always.
5. Spotlight Search Not Working Properly
Indexing errors or corrupted metadata can break Spotlight functionality.
- Rebuild the Spotlight index using the command
sudo mdutil -E /in Terminal. - Make sure Spotlight is enabled for all desired apps/services in System Settings > Spotlight.
- Restart the Mac after re-indexing to apply changes.
6. Finder Windows Lagging or Not Responding
Finder extensions or Quick Look plugins may be incompatible or buggy. Relaunch Finder by right-clicking its Dock icon while holding Option and selecting Relaunch.
- Hence, disable third-party Finder extensions in System Settings > Login & Extensions.
- Clear Finder preferences by deleting
com.apple.finder.plistfrom ~/Library/Preferences/.
7. Bluetooth Devices Disconnecting or Not Pairing
Bluetooth stack instability is common in early betas.
- Turn off Bluetooth, restart the Mac, then turn it back on.
- Forget the device and re-pair it from System Settings > Bluetooth.
- Reset Bluetooth using the Terminal command
sudo pkill bluetoothdand reconnect devices.
8. Universal Control Not Working
Compatibility issues between macOS 26 and other Apple OS versions can cause failures.
- Ensure both Mac and iPad are signed in to the same Apple ID with Handoff enabled.
- Check that Wi-Fi, Bluetooth, and Continuity features are active on both devices.
- Update all connected devices to their latest beta or stable versions to ensure feature support.
9. External Monitor Flickering or Not Detecting
Display drivers or scaling options may not be optimized in the beta.
- Disconnect and reconnect the external monitor.
- Try changing the resolution in System Settings > Displays > Display Settings.
- Reset NVRAM by turning off the Mac and holding Option + Command + P + R for 20 seconds during startup.
Wrapping up..!
There you go! While the latest macOS 26 beta has introduced some impressive new features and refinements, it also brings a set of performance and stability issues typical of a beta release. The good news is that most of these problems have workarounds or temporary fixes until the final version is released. If your workflow depends on consistent system performance, it’s advisable to install beta software on a secondary device.
For now, applying the solutions above should help you maintain a smoother and more stable macOS beta experience. As always, report any bugs through the Feedback Assistant to contribute to the development process and improve future builds.
