Enable debug logging before performing the following tasks:
Uninstall and then install the server again.
Upgrade OfficeScan to a new version.
Perform remote installation/upgrade (Debug logging is enabled on the endpoint where you launched Setup and not on the remote endpoint.)
[debug]
debuglevel=9
debuglog=c:\LogServer\ofcdebug.log
debugLevel_new=D
debugSplitSize=10485760
debugSplitPeriod=12
debugRemoveAfterSplit=1