An iconfig file extension is associated with the iConfig executable format. Probably obsolete file format.
ICONFIG file extension - iConfig executable
What is iconfig file? How to open iconfig files?
File type specification:
The iconfig file is an archive that contains a Windows, Mac, or Linux program that is converted to run on other platforms by the other contents of the archive.
Most likely some old format without support. No further information could be found.
This iconfig file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.