"Protection Disabled" error message appears when opening the Trend Micro program on OS X El Capitan or MacOS Sierra

You installed the following Trend Micro programs, then you upgrade your MacOS to OS X El Capitan or MacOS Sierra:

  • Smart Surfing for Mac
  • Titanium Internet Security 2013 and 2014
  • Antivirus for Mac 2015 and 2016

Protection Disabled

"Protection Disabled
This version of Trend Micro Titanium is not compatible with current release version of Mac OS. Please upgrade to the latest version of Titanium."

This happens because your Trend Micro Security is not compatible with the latest version of your MacOS.


  • The latest version of Trend Micro Antivirus for Mac that supports OS X El Capitan or MacOS Sierra is now available to download and install.
  • This solution also applies to Trend Micro Antivirus for Mac purchased from Best Buy.
To resolve the issue, upgrade your program. Do the following:

STEP 1: Take note of your serial number
To find your serial number, do the following:
  1. Click here to login. A login account window will appear.
  2. Type your email and password, then click Sign in.
    Trend Micro Account
    The Product Panel window will appear on the right side of your browser showing your serial number and its expiration date. Take note of the serial number.
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STEP 2: Uninstall your existing Trend Micro program
To uninstall your program, do the following:
  1. Click Go > Applications from the upper left of your desktop.
    Go Applications on Mac OS X
  2. Open the Trend Micro folder.
  3. Run Trend Micro Titanium Diagnostic Toolkit.
  4. Click Uninstall.
  5. Type in your Mac login password, then click OK.

STEP 3: Download and install the program
To install the new program, do the following:
  1. Download the disk image (.DMG) or installer file, then save it to your desktop.
  2. Open the Antivirus for Mac installer.
  3. Click Install Trend Micro Antivirus.
  4. Click Open on the security warning to continue the installation.
  5. Click Continue.
    Installer Prompt
  6. Click Continue on the Welcome screen.
    Welcome screen
  7. Read the License Agreement, then click Continue.
    License Agreement
  8. Click Agree when prompted to accept the License Agreement.
    Agree on License Agreement
    You can click Disagree if you do not agree with the terms of the License Agreement but this will automatically terminate the installation process.
  9. Type your serial number on the field provided, then click Continue.
    Enter serial number
    You can find the serial number from the CD sleeve or Order Confirmation email.
    If you want to install the trial version, select Start a free trial of Trend Micro Antivirus, then click Continue.
  10. Click Install .
  11. Type your administrator password, then click Install Software.
    Type administrator password
    The administrator password is created when you first set up your Mac operating system.
    Wait while the Trend Micro components are installed onto your Mac.
  12. Provide your email address, then click Continue.
    Type email address
  13. Click Close after the installation is done.
    Installation successful

STEP 4: Perform an update to get the latest protection
To update your program, do the following:
  1. Click the Trend Micro icon on the menu bar.
  2. Select Update Now.
Video Tutorial

Applies To: Antivirus for Mac - 2015, 2016, 2017;Trend Micro Internet Security for Best Buy - All;Trend Micro Security for Mac - All;Trend Micro Smart Surfing for Mac - All;

Last Updated: Feb. 27, 2017 9:43 PM (PST)
Solution ID: 1112430