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You may get this message on your Mac:

 Trend Micro Antivirus cannot work if system extension permission is not allowed

Why did this happen?

You may have closed the instruction page for setting up System Extension.

How do I fix this?

Allow Trend Micro Extension:

  1. Click Cancel or Try Again and continue to allow System Guidance.
  2. Click Continue in the Permission Overview page.
  3. Click Open System Preferences.

    System Extension Blocked

  4. Unlock the page.

    System Extension Blocked

  5. Click the Allow button.

    System Extension Blocked

  6. Select all Placeholder Developer, and then click OK.

    System Extension Blocked

  7. Click Allow when you see this popup below.

    System Extension Blocked

  8. You will find that the page has changed, click the Continue button.
  9. Click the Open System Preferences button.
  10. Unlock the page if it is locked.
  11. Select Full Disk Access, and then tick Trend Micro Antivirus and Trend Micro Antivirus Extension.

    Make sure to select both Trend Micro Antivirus and Trend Micro Antivirus Extension.

    System Extension Blocked

  12. Click Verify to validate the necessary permissions.

    System Extension Blocked

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