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You see this error message when installing the Trend Micro Security on Windows:

"Installation Incomplete. Error code #1603, 3003, 0xe0ff0001"

Why Did This Happen?

The installer could not set up an important component needed by Trend Micro Security.

What Should I Do Next?

Follow these simple steps to fix the issue:

  1. Log onto your computer using an account with administrator privileges.
  2. Download and install the Trend Micro Permission Tool to fix Windows registry and folder permission problems.
  3. After restarting, run the installer again.
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