Scenario:
Win7, x64, SEP 12.1 unmanaged client, LiveUpdate frequency set to 4 hours. The system is used only for releatively short periods throughout the day, e.g. 1-2 hours and then shut down into standby or hypernation. The next day the system does not poll the latest AV Definitions if it is not run for at least 4 hours continuously, what rarely happens. As a result AV Definitions Updates via LiveUpdate are usually triggered automatically not before 3-4 days.
Suggestion: Trigger AV Definitions Updates via LiveUpdate as soon as system resumes from shut down, standby or hypernation, and the current AV Definitions are older than the time period specified in the LiveUpdate frequency.
Best regards,
Michael