Depending on your instance count, choose a matching instance size: 10 instances - m4.large; 100 instances - m4.xlarge; 250 instances - m4.2xlarge; 500 instances - c4.2xlarge.
Use certified virus definitions, Network-Based Protection, or Behavior-Based Protection files to update content on the Symantec Endpoint Protection Manager when it cannot access either the Internet or a Live Update Administrator (LUA) server.
Use Rapid Release files in outbreak scenarios to combat new threats.
See Configuring clients to download content from the Symantec Endpoint Protection Manager.
See Configuring push mode or pull mode to update client policies and content.
Endpoint Protection is the result of merger of several security software products, including Symantec Antivirus Corporate Edition 10.0, Client Security, Network Access Control, and Sygate Enterprise Edition.
Business Software Business Intelligence Financial Services Collaboration Content Management CRMe Commerce Education & Research Healthcare & Life Sciences High Performance Computing Media Project Management Storage & Backup Desktop Software AP and Billing Application and Web Development Business Intelligence CAD and CAMGIS and Mapping Illustration and Design Media and Encoding Productivity and Collaboration Project Management Security/Storage/Archiving Utilities Achieve defense in depth in the cloud, on-premises, and across your hybrid environment with Symantec Endpoint Protection.
After you upgrade, the management server automatically starts the service.
You do not need to uninstall previous clients before you install the new version.
If you need help with Symantec products, you can post in the Symantec forums.
FYI These forums are for the home user oriented Norton product line.
You may need to change the default update method to the clients, depending on the client platform, network configuration, number of clients, or your company's security policies and access policies.