This document helps you find out whether your firewall prevents LiveUpdate from downloading updates.
Confirm that the correct ports and protocols are available for LiveUpdate
Make sure that the firewall allows the LiveUpdate executable to connect to the Internet through the correct ports and that the firewall allows connections to the correct domains. Read your firewall's documentation or contact the manufacturer to find out how to confirm these settings.
Download a Livetri.zip file to troubleshoot possible corruption
If any of these files are not present, the archive is corrupted or is not the correct file.
If all of these files exist, the Livetri.zip file is not corrupted, and a firewall did not modify the archive.
The file name LuComServer_*_*.exe will reflect the actual version of LiveUpdate, i.e. LuComServer_3_3.exe for LiveUpdate 3.3.