Quick Summary
Error code -805306369 on macOS typically indicates a problem during the software update or installation process. This usually suggests a corrupted download or an issue with system permissions.
Common Causes
- Corrupted Download: The downloaded update package may be incomplete or damaged, leading to installation failures.
- Insufficient Disk Space: Not enough free space on the startup disk prevents the system from properly extracting and installing the update.
- Permissions Issues: Incorrect file permissions can prevent the installer from modifying system files or creating necessary directories.
- Software Conflicts: Conflicting software or extensions can interfere with the installation process.
- Network Connectivity Issues: Interrupted or unstable network connection during download can lead to corrupted update files.
Step-by-Step Fixes
Method 1: Restart Your Mac
Restarting your Mac can resolve temporary glitches that might be causing the error.
Click the Apple menu and select Restart.
Method 2: Check Available Disk Space
Make sure that your Mac has enough free disk space for the update. Generally, at least 20GB is recommended.
Go to the Apple menu, select About This Mac, click on the Storage tab, and manage your storage by deleting unnecessary files.
Method 3: Download the Update Again
A corrupted download can cause installation failures. Re-downloading the update might fix the issue.
Go to System Preferences > Software Update and attempt to download and install the update again. If you are using the App Store, close it and re-open it before trying again.
Method 4: Run Disk Utility
Use Disk Utility to repair any disk errors that may be causing the problem.
Open Disk Utility (Applications > Utilities), select your startup disk in the sidebar, and click First Aid. Click Run to start the repair process.
Method 5: Boot into Safe Mode
Starting your Mac in Safe Mode prevents certain software from loading, which can help identify software conflicts.
Restart your Mac and immediately press and hold the Shift key until you see the Apple logo and progress bar. Try installing the update again while in Safe Mode.
Method 6: Reset NVRAM/PRAM
Resetting NVRAM/PRAM can resolve certain system-level issues.
Shut down your Mac. Press the power button, and then immediately press and hold the Option, Command, P, and R keys together for about 20 seconds. Release the keys and let your Mac start up normally, then try the update again.
Method 7: Reinstall macOS Recovery
If issues persist, consider reinstalling macOS Recovery to ensure a clean environment for update.
Warning: This process will erase the disk. Ensure you have backed up all important data beforehand.
Start up from macOS Recovery. In the Recovery app window, select Disk Utility, then select the Macintosh HD and erase. Choose APFS for format and GUID Partition Map for scheme. Now choose reinstall MacOS, and follow the on-screen instructions.