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How to Fix Microsoft AutoUpdate Errors and Unexpected Mac Shutdowns
Question details
The user needs to resolve recurring Microsoft AutoUpdate errors on macOS and identify if unexpected Mac shutdowns are related to the software.
- Product
- Microsoft AutoUpdate
- Device & OS
- macOS
- Scenario
- Attempting to update Microsoft Office applications on a Mac but encountering AutoUpdate errors, permission prompts, or experiencing unexpected system shutdowns.
- Observed behavior
- Microsoft AutoUpdate fails with error notifications due to damaged components or permission issues, and the Mac may randomly shut down, leading the user to suspect Office as the cause.
Before modifying system permissions or altering files in the Library folders, ensure you have created a recent Time Machine backup of your Mac.
Reinstall Microsoft AutoUpdate via the Official Installer
Reinstalling the tool directly from Microsoft overwrites corrupted files and is safer than deleting random application files.
Microsoft AutoUpdate components are often hidden in system directories rather than the main Applications folder. Reinstalling using the official package ensures all helper tools and background services are correctly placed.
Go to Apple menu > System Settings > General > Software Update and install any pending macOS updates.
Visit the official Microsoft website and download the latest Microsoft AutoUpdate (MAU) installer package for Mac.
Open the downloaded .pkg file and follow the on-screen instructions to complete the installation. This will refresh files located in /Library/Application Support/Microsoft/MAU2.0.
Open any Microsoft Office application (like Word or Excel), click on 'Help' in the top menu bar, and select 'Check for Updates' to ensure AutoUpdate runs without errors.
Check Mac Privacy and Security Permissions
Granting the necessary permissions prevents AutoUpdate from failing when trying to modify system files during an update.
Diagnose Unexpected Mac Shutdowns
Determine if your Mac's random shutdowns are actually caused by macOS kernel panics rather than Microsoft Office.
Switch to WPS Office for a Lightweight Mac Experience
If Microsoft AutoUpdate continues to cause system errors, permission issues, or resource drain on your Mac, consider switching to WPS Office. It provides a seamless, unified office suite without the need for complex background updater tools.
- 1. Download WPS Office: Visit the official WPS Office website and download the Mac version.
- 2. Install the Application: Open the downloaded file and drag the WPS Office icon to your Applications folder.
- 3. Open and Edit Seamlessly: Launch WPS Office and directly open your existing Microsoft Office files without converting them.
Frequently Asked Questions
Where is Microsoft AutoUpdate located on my Mac?
Microsoft AutoUpdate is not usually found in the main Applications folder. Instead, it is installed in system locations, typically at /Library/Application Support/Microsoft/MAU2.0.
Can Microsoft AutoUpdate cause my Mac to shut down unexpectedly?
While AutoUpdate can trigger software errors, sudden shutdowns are usually caused by macOS kernel panics or hardware failures. Always check the macOS shutdown panic report to find the actual root cause.
Why do I keep getting Microsoft AutoUpdate permission errors?
This usually happens when the Privileged Helper Tool associated with the updater is corrupted or has overly restrictive permissions in the /Library/PrivilegedHelperTools directory. Reinstalling AutoUpdate with the official installer generally fixes this.
Should I delete Microsoft AutoUpdate files manually to fix it?
No, deleting random system or application files is not recommended as it can break Office functionality further. You should always use the official Microsoft AutoUpdate installer to overwrite and repair damaged components.
