You encounter the following message while using Trend Micro Antivirus for Mac:
"Update Needed. Download the newest security update to get the latest protection. Click the Update Now button."
This notification appears if the program detects that it has not connected to the Trend Micro server for 3 days or more.
Update Trend Micro Antivirus for Mac
Trend Micro wants to ensure you have access to the latest protection all the time. This notification will appear if the program detects that it has not connected to the Trend Micro server for 3 days. Whenever you get this notification, simply connect to the Internet, then click the Update Now button. The protection status will change to "Protected".
There is no need to click on anything. Once it connects to the server, it will automatically acquire the latest protection. You can disconnect from the Internet after the update has finished.