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How to Enable Microsoft Defender System Extensions on macOS Sequoia
Question details
The user needs to locate and approve Microsoft Defender system extensions on macOS Sequoia, as the older settings layout has changed.
- Product
- Microsoft Defender
- Device & OS
- macOS Sequoia 15.x
- Scenario
- Setting up or troubleshooting Microsoft Defender antivirus protection after updating to macOS Sequoia.
- Observed behavior
- The System Extensions section is missing from Privacy & Security settings. Microsoft Defender displays an 'X' icon and repeatedly prompts for security approval.
Ensure you are logged into your Mac with an administrator account, as administrator credentials are required to modify system extensions and security policies.
Enable Defender via Login Items & Extensions
Apple moved the System Extensions settings to the General tab in macOS Sequoia. Use this new path to grant Microsoft Defender the necessary permissions.
In previous macOS versions, system extensions were managed in the Privacy & Security menu. In macOS Sequoia, this has been relocated. Following the old instructions will lead to a dead end where only App Store options are visible.
Click the Apple menu in the top-left corner of your screen and select 'System Settings'.
Click on 'General' in the left sidebar, then select 'Login Items & Extensions' on the right panel.
Scroll down to the 'Extensions' section. Locate 'Endpoint Security Extensions' and click the information (i) icon next to it.
Find Microsoft Defender in the list, toggle the switch to enable it, and authenticate using your Mac administrator password or Touch ID.
Update Software and Restart to Fix Display Glitches
If the Endpoint Security Extensions option is entirely missing or if Defender still shows a red 'X' after being enabled, applying updates and forcing a restart can clear the software glitch.
Looking for a secure and lightweight Office suite? Try WPS Office
While you are setting up your security tools like Microsoft Defender on macOS Sequoia, consider upgrading your productivity software. WPS Office provides a highly secure, lightweight, and fully compatible alternative to Microsoft Office without the heavy subscription fees.
- 1. Download the Installer: Visit the WPS Office official website and click the free download button for macOS.
- 2. Install on Your Mac: Open the downloaded DMG file and drag the WPS Office icon to your Applications folder.
- 3. Start Creating Securely: Launch WPS Office to securely open, edit, and save your existing Office documents.
Frequently Asked Questions
Why is the System Extensions option missing in macOS Sequoia Privacy & Security?
Apple completely redesigned the System Settings application and reorganized the security categories in macOS Sequoia. The extensions management feature was moved out of 'Privacy & Security' and relocated to 'General' > 'Login Items & Extensions'.
What should I do if Microsoft Defender still shows an 'X' on my Mac menu bar?
If the red 'X' persists after you have approved the extension, your macOS security database might be out of sync. Ensure both macOS and Microsoft Defender are fully updated, then restart your Mac. Rebooting usually forces the system to apply the new permissions properly.
Why does macOS repeatedly prompt me to allow Microsoft Defender even after clicking 'Allow'?
This prompt loop is a known glitch that can happen right after a major macOS upgrade. Updating to the latest minor patch of macOS Sequoia (such as 15.0.1 or higher) and completely removing and reinstalling Microsoft Defender generally resolves this issue.
