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You see this message after opening Trend Micro Antivirus for Mac:

"Trend Micro Antivirus for Mac is Damaged and Cannot be Opened."

What's the Issue?

If your Trend Micro Antivirus says it's "damaged" and won't open, it probably means it's out of date.

How to Fix It

Let's get your antivirus working again by updating it. Just follow these simple steps:

  1. Remove the Old Antivirus:
    1. Click on the magnifying glass (Spotlight) on your Mac, type "Trend Micro".
    2. Choose Uninstall Trend Micro Antivirus.
    3. When asked, type in your Mac password.
    4. Click the Uninstall button and then hit OK to confirm.
    5. Wait for a message that says it's all clear, then click OK.
  2. Get the New Antivirus Software:

    Download the installer that matches your macOS version from the list below:

    If your macOS version is macOS Mojave or older, consider upgrading your Mac to access the latest antivirus features.

  3. Install the New Antivirus:
    1. Open the file you just downloaded.
    2. Click Install Trend Micro Antivirus.
    3. Follow the instructions on your screen.
    4. Type in your activation key when asked.
    5. After the installation, make sure to allow full disk access for complete protection.


Your Trend Micro Antivirus should now say it's "Protected," and you're all set to go!

Keywords: Trend Micro Mac error, fix damaged antivirus, update Trend Micro, Mac antivirus repair, Trend Micro help
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