Proactive Threat Protection definitions are not getting updated on multiple computers.

Products

• Endpoint Protection

Issue/Introduction

Proactive Threat Protection definitions are not getting updated on multiple comp

Symptoms
Symantec Endpoint Protection Clients not getting Proactive Threat Protection definitions are from same group.

If clients go to Symantec Liveupdate, they are able to update Proactive Threat Protection definitions.
After reinstalling the client, Proactive Threat Protection definitions works fine initially but can't update it after a day.

Cause

Liveupdate Content Policy settings.

Resolution

Go to Symantec Endpoint Protection Manager console.

• Select Policies.
• Select "Liveupdate" from "View Policies".
• Select "LiveUpdate Content" tab from tabs on right side.
• Edit "LiveUpdate Content Policy" assigned to the particular group having problem.
• Select "Security Definitions"
  Make sure that following options are checked:

TruScan proactive threat scan heuristic signatures
TruScan proactive threat scan commercial application list"

• Select OK.
• Send an Update Content command to clients.