The size of the file to be downloaded displays beside the Download button.
Plug-in Manager downloads the package to <server installation folder>\PCCSRV\Download.
<server installation folder> is typically C:\Program Files\Trend Micro\OfficeScan or C:\Program Files\Trend Micro\Apex One.
You can navigate away from the screen during the download.
If you encounter problems downloading the package, check the server update logs on the Apex One or OfficeScan web console. On the main menu, click Logs > Server Updates.
The installation starts.