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You encounter the following error message after installing Trend Micro Antivirus for Mac:

Cannot install helper tool

"Cannot install helper tool

The helper tool is needed to open Trend Micro Antivirus. Please try again."

This message appears because Apple introduced a more secure paradigm for performing tasks with elevated privileges. Without the Privileged Helper Tool, Antivirus for Mac cannot launch and do scans to protect your computer from threats.


  1. Restart your macOS computer.
  2. Launch Trend Micro Antivirus for Mac from the Launchpad.

    Antivirus for Mac Launchpad

  3. Enter your password, and then click Install Helper.

    Install Helper Tool

    You will now be able to see the Antivirus for Mac main console.

"Something went wrong"

You encounter this error message while installing the Helper Tool:

Helper Tool | Something went wrong

  1. Click OK.

    If you already clicked OK, but there is no pop-up notification to type your password, restart your Mac, then open the Antivirus for Mac and wait for the pop-up to install the Helper Tool.

    If the pop-up does not show even after restart, contact Trend Micro Support.

  2. Enter your password.
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Error: Cannot install Helper Tool (Antivirus for Mac)

You encounter the following error message after installing Trend Micro Antivirus for Mac:

Cannot install helper tool

"Cannot install helper tool

The helper tool is needed to open Trend Micro Antivirus. Please try again."

This message appears because Apple introduced a more secure paradigm for performing tasks with elevated privileges. Without the Privileged Helper Tool, Antivirus for Mac cannot launch and do scans to protect your computer from threats.


  1. Restart your macOS computer.
  2. Launch Trend Micro Antivirus for Mac from the Launchpad.

    Antivirus for Mac Launchpad

  3. Enter your password, and then click Install Helper.

    Install Helper Tool

    You will now be able to see the Antivirus for Mac main console.

"Something went wrong"

You encounter this error message while installing the Helper Tool:

Helper Tool | Something went wrong

  1. Click OK.

    If you already clicked OK, but there is no pop-up notification to type your password, restart your Mac, then open the Antivirus for Mac and wait for the pop-up to install the Helper Tool.

    If the pop-up does not show even after restart, contact Trend Micro Support.

  2. Enter your password.

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