Notes about the IOC 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 IOC file type is primarily associated with 'Winamp' by Nullsoft. According to the Winamp forums the file IMGORG.IOC has something to do with the Io plug-in for Winamp. To uninstall, the instructions say to press Control-P while in Winamp, choose General Purpose Plug-ins, choose uninstall. The plugin itself should be: C:\Program Files\Winamp\Plugins\gen_io.dll