A megamanager file extension is related to the Mega Manager software for Megaupload software.
MEGAMANAGER file extension - Mega Manager data
What is megamanager file? How to open megamanager files?
File type specification:
The megamanager file extension is associated with the Mega Manager a software tool for Microsoft Windows operating system that allows users to manage and upload data to Megaupload service.
Megaupload was defunct in 2012.
This megamanager 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.