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If you never received any warning or notification from your Trend Micro program and are concerned it is not protecting your computer, check the system tray located at the lower right of your screen and see if there is a Trend Micro icon.
Do these to check if you successfully installed the Trend Micro program on your Windows PC:
Trend Micro constantly checks online for security updates to stop new threats every 3 hours. You can also do this manually if your computer is not always connected to the Internet.
If you cannot see it, click the Show hidden icons arrow ^ next to the notification area.
The About Your Software window will appear and check for available updates.
Trend Micro keeps your computer protected in real-time so you do not need to scan manually to remove viruses. If your computer performs poorly due to a possible infection, you can still run a scan at any time.
If you can't see the Trend Micro icon on the system tray, click here on how to open the program in your computer.
Check if Trend Micro program is in the Windows Apps and Features lists.
We've tailored a separate solution article here to help you understand why this error occurs and how to resolve it.