Error: LiveUpdate encountered one or more errors. Return code = 4" in LiveUpdate status in Symantec Endpoint Protection Manager

dear All ,

please provide the good solution for this erro (

(Error: LiveUpdate encountered one or more errors. Return code = 4" in LiveUpdate status in Symantec Endpoint Protection Manager )

I am use these steps but not work,

Symantec Endpoint Protection 12.1

1. Open a command window, then browse to:
   C:\Program Files\Symantec\Symantec Endpoint Protection Manager\bin
2. Type lucatalog -cleanup and press Enter.
3. Type lucatalog -forcedupdate and press Enter.
4. Run LiveUpdate to verify that there are no errors.