What is the MPP File Extension?

Writer:   |   Revised: November 26, 2018

Microsoft Silver

MPP File Summary

Our most recent information indicates that MPP files are associated with three unique file types (the most prevalent being the Microsoft Project File format) and can be viewed primarily with Serena OpenProj, including eleven other known software applications (listed below). The majority of MPP files are considered Data Files, but they can also be Vector Image Files.

File Extension MPP is supported by Windows, Mac, and Linux operating systems. These types of files can be found on both desktop and mobile devices. MPP files have a "Low" Popularity Rating; this means that they are not present on most devices.

Although there is a lot more to know about MPP files, those are the most important details of these types of files. If you are having trouble opening these files, or would like more detailed information, please see our comprehensive information below.

Low
File Type Popularity
1383
Rank

/ 11690

Active

Relevance

26

November

2018

Page Last Updated

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Varieties of MPP Files

  3 known file types use this extension

Main MPP Affiliation

.MPP
File Name:.mpp
Category:Microsoft Project File

An MPP file is a project created by the program Microsoft Project, basically, a management program that helps you organize, track, and maintain projects. It is the main file type associated with the program.

Created by: Microsoft Corporation
Class:Data Files
Key: HKEY_CLASSES_ROOT\.mpp

Software Programs That Open The Microsoft Project File:


Serena OpenProj by Serena

Windows
Mac
Linux

Microsoft Project 2016 by Microsoft Corporation

Windows

Stand By Soft RationalPlan by RationalPlan

Windows
Mac
Linux

Seavus Project Viewer by Seavus

Windows
Mac
iOS
Web

Project Viewer 365 by Housatonic

Windows
Windows Phone
Mac
iOS
Android
Web

LiveProject by KaDonk

Windows

MOOS Project Viewer by Stand By Soft

Windows
Mac
Linux

Steelray Project Viewer by Steelray Software

Windows
Mac
Linux

MPXJ by Packwood Software

Mac
Linux

ProjectManager.com by ProjectManager.com

Web

Other MPP File Associations

.MPP
File Name:.mpp
Category:Atari ST Multi-Palette Picture

Files with MPP file extension is related to the Atari ST computers with the TOS operating system. These files contain a multi-palette picture from Atari ST computers.

Created by: Atari Corporation
Class:Vector Image Files

Software Programs That Open Atari ST Multi-Palette Picture Files:


Recoil by Piotr Fusik

Compatible with:

Windows
Mac
Apple II
Android
Linux
Atari TOS
.MPP
File Name:.mpp
Category:MobileFrame Project Publisher File

An MPP file may also be a file created by the MobileFrame Desktop, the MobileFrame mobile application projects and deployments tool. It may contain MobileFrame projects and is used for saving all of the projects in one archive.

Created by: MobileFrame
Class:Data Files

Software Programs That Open MobileFrame Project Publisher File Files:


MobileFrame Desktop by MobileFrame

Compatible with:

Windows
Mac
Linux

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MPP Demand


Leading Operating Systems

Windows (97.14%)
Macintosh (2.06%)
Linux (0.73%)
Chrome (0.05%)
Other (0.01%)

Top Windows Operating Systems

7 (45.73%)
10 (44.56%)
8.1 (5.41%)
XP (2.79%)
8 (0.97%)


Understanding MPP Issues


Common MPP Opening Problems

Missing Serena OpenProj

When trying to open your MPP file, you get the error "Can't Open MPP File Type". When this happens, it is commonly due to Serena OpenProj missing in %%os%%. This will prevent you from double-clicking to open the MPP file because the OS doesn’t know how to handle it.


Tip: Another MPP-related program can be selected to open the file by clicking "Show Apps" and finding the application.


Wrong Version of Serena OpenProj is Installed

It is possible that your version of Serena OpenProj isn't able to open your Microsoft Project File file due to incompatibility. Installing the latest version of Serena OpenProj from Serena is recommended. This issue mainly occurs when your Microsoft Project File file was created by a newer version of Serena OpenProj than you have on your PC.


Tip: Investigate your MPP file by right-clicking and selecting "Properties" to find clues on what version you need.


Ultimately, most of the difficulties opening MPP files are due to having the wrong version of Serena OpenProj installed.


Other MPP File Opening Causes

In the majority of cases, installing the right version of Serena OpenProj will resolve your issue. There can be other issues - unrelated to software - preventing you from opening MPP files. These issues include:

  • Invalid MPP file references in the Windows Registry (the "phonebook" of the Windows Operating System)
  • The MPP file description within the Windows Registry was removed
  • Serena OpenProj or another MPP application experienced a flawed installation
  • MPP file corruption
  • Past or present virus infection has affected your MPP
  • Device drivers of the hardware associated with your MPP file are corrupt or out-of-date
  • Your computer does not have the adequate system resources to open the Microsoft Project File format

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