Using HTTPS to download components from the Trend Micro
ActiveUpdate server (the default download source) or other update
source provides a more secure method for retrieving components.
Downloading components from a shared folder in a network requires
setting the local Windows and Remote UNC authentications.
The local Windows authentication refers to the Active Directory
user account in the Control Manager server.
The account should have:
The remote UNC authentication feature uses a user
account from the component source server that has permission to
share a folder to which Control Manager will
download updates.