About unscannable files in Symantec Protection Engine
Symantec Protection Engine cannot scan certain files types as they cannot be extracted or they do not match standard file formats. From version 7.0 onwards, such files (encrypted and malformed containers), would be referred to as "Unscannable" files.
Previously, Symantec Scan Engine had limited policies to handle such unscannable files. Now, Symantec Protection Engine provides better control over handling unscannable files.
Symantec Protection Engine provides the following options to handle unscannable files:
Generates a log entry.
Blocks the unscannable files and generates a log entry.
Deletes the unscannable files and generates a log entry.
In addition, you can also choose to quarantine unscannable files with any of the above options.