Inventory tasks and policies include rules based on a default set of file extensions. These extensions are pre-defined in the Symantec_cmdb. In order to create a rule for a file extension that is not currently available in an inventory rule, the following steps can be taken to make that file extension available.
Now when you are using the File rules the added values will be available from the dropdowns.
Note: the same must be done for each ‘Platform’ or operating system, i.e., Unix, Mac, Linux, Windows.
Note: Some files may still be excluded based in drive and disk exclusions and because some specific files do not have standard internal property data, i.e., .ser and .cph.