This issue occurs when definitions provided by the Symantec Endpoint Protection Manager are older than the amount of days configured in the Antivirus and Antispyware (or Virus and Spyware) protection policy before an outdated definitions notification will appear.
Symantec LiveUpdate keeps your Symantec Endpoint Protection virus definitions up-to-date. It obtains Symantec program and protection updates for your computer through your Internet connection. Program updates are usually created to extend the operating system or hardware compatibility, adjust a performance issue, or fix program errors. Symantec releases program updates on an as-needed basis.
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