.MPP_ File

The mpp_ file extension is associated with Microsoft Project. Microsoft Project (or MSP) is a project management software program developed and sold by Microsoft which is designed to assist project managers in developing plans, assigning resources to tasks, tracking progress, managing budgets and analysing workloads.

The .mpp_ files are used for plan files in some earlier Mac version of the application.

How to open:

It is not openable file format.

How to convert:

Files with mpp_ are not meant to be converted.