Notes about the IIL file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The IIL file type is primarily associated with 'Norton CleanSweep' by Symantec Corporation. Typically reside in the folder C:\Program Files\Norton CleanSweep\. In CleanSweep 4.1 and earlier, the folder referred to as Norton CleanSweep was named simply CleanSweep.