Seeing "Installation Incomplete. Error code #1618, 0, 0x00000000" when installing Trend Micro Maximum Security, Internet Security, or Antivirus+ Security on Windows? Don't worry — you're not alone, and this is usually a quick fix. Follow the steps below to get your installation back on track.
Why This Happens
Windows shows Error 1618 when another installer is already running on your computer — most often, a second Trend Micro installer that was opened by accident. In some cases, leftover files from a previous Trend Micro install can also trigger this error.
How to Fix It
- Close all Trend Micro installer windows. Check your taskbar and any minimized windows.
- Restart your computer. This clears out any installer that may still be running in the background.
- Run the installer again. If installation completes successfully, you're all set!
If the error appears again, clear out leftover files:
- Sign in to Windows with an administrator account.
- Download the Trend Micro Remnant File Remover Tool.
- Run the tool and follow the prompts to remove old Trend Micro files.
- Restart your computer again.
- Run the installer one more time. When the main console opens and shows Protected, you're done!
If the Issue Continues
If you still see the same error code after completing all the steps above:
- Make sure no other antivirus software is installing or updating at the same time.
- Temporarily disable third-party security tools that may be locking installer files.
- Contact Trend Micro Support with your activation code and a photo/screenshot of the error dialog ready.