You may need to change the Trend Micro serial number for various reasons, including upgrading from a trial version to a paid version or replacing an already expired license with a new one.
There is no need to reinstall the product. Follow the simple instructions below.
- Double-click the Trend Micro shortcut on your desktop.
- Click your program's expiry date.
- Click Change your serial number.
- Enter your new serial number, then click Next.