OfficeScan blocks all attempts to modify, delete, or add new entries under the following registry keys and subkeys:
HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\PC-cillinNTCorp\CurrentVersion
HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\NSC
HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\Osprey
HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\AMSP