Virus definitions are out of date on the Symantec Endpoint Protection Manager (SEPM)
Symantec Endpoint Protection (SEP) clients virus definitions are not up to date.
As a best practice, ensure that the SEPM is upgraded to the very latest release of SEP. The issue causing the update issue may be resolved by the improved processing and enhanced features available in a software version later than what is running.
Most common reasons for LiveUpdate failure
SEPM definitions are corrupted
LiveUpdate is unable to access / read the LiveUpdate catalogue file
An incorrect or incompatible LiveUpdate client version is installed on the server
A proxy server is preventing LiveUpdate to connect properly to LiveUpdate servers or is modifying the files that must be used
Note that IP address obtained by DNS resolution, should not be used, as this may be subject to change due to system updates and load balancing. It is highly recommended that the provided hostnames are used.
Disable content caching and AV scan in the proxy for that connection to avoid corruption of the definition files.
Step 7) Monitor System
Allow 24 hours to verify that LiveUpdate is now working properly. Monitor the system for a few days to ensure that updates are downloaded and installed properly.
Imported Document ID: TECH183178
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