MAR File: What is it?

Author:   |   Amended: December 05, 2018

Microsoft Silver

MAR File Summary

Five known software programs (notably, Microsoft Access developed by Microsoft Corporation) are related to the MAR file extension. In addition, they are categorized under four distinct file types, but mainly identified as the Microsoft Access Report format. MAR files are categorized ordinarily as Database Files. Other file types can be Uncommon Files or Spreadsheet Files.

Windows, Mac, and iOS operating systems can be used to view MAR files. Both desktop and mobile devices enable you to view and (sometimes) edit these files, depending on the software used. With a Popularity Rating of "Low", these files are not very common to your average computer user.

Please see the detailed information below to learn more about MAR files and the programs that can open them. In addition, we provide simple troubleshooting information to help you open your MAR file.

Low
Demand
8274
File Rank

/ 11690

Active

Importance

5

December

2018

Amended

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Kinds of MAR Files

  4 known file types use this extension

Primary MAR File Association

.MAR
File ID:.mar
Classification:Microsoft Access Report

The files were used for reports for some versions of Microsoft Access; a database management system offered as a part of Microsoft Office Suite.

Author: Microsoft Corporation
File Category:Database Files
Folder: HKEY_CLASSES_ROOT\.mar

Software Programs That Open The Microsoft Access Report:


Microsoft Access by Microsoft Corporation

Windows

Additional MAR Files

.MAR
File ID:.mar
Classification:Mozilla Archive

A MAR file contains files that update the Mozilla programs to a new version. It is stored in a custom file format, but the specification is publicly available.

Author: Mozilla
File Category:Uncommon Files

Software Programs That Open Mozilla Archive Files:


Mozilla Firefox by Mozilla

Compatible with:

Windows
Mac
iOS
Android
Linux
Solaris
illumos

Mozilla Thunderbird by Mozilla

Compatible with:

Windows
Mac
Linux
.MAR
File ID:.mar
Classification:Mariner Calc Spreadsheet

A MAR File is a spreadsheet for Mac OS X. It contains rows and columns for organizing data. It supports functions, named ranges, charts, sorting, and auto-summation.

Author: Mariner Software
File Category:Spreadsheet Files

Software Programs That Open Mariner Calc Spreadsheet Files:


Calc XLS by Mariner Software

Compatible with:

Mac
iOS
.MAR
File ID:.mar
Classification:WebSphere Business Modeler Process Model Template

Data file associated with WebSphere Business Modeler, an advanced business modeler and analyzing tool for Windows. It contains process model template.

Author: IBM
File Category:Data Files

Software Programs That Open WebSphere Business Modeler Process Model Template Files:


WebSphere Business Modeler by IBM

Compatible with:

Windows
Linux
AIX

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MAR Usage


Popular Devices

Desktop (84.34%)
Mobile (14.29%)
Tablet (1.37%)


MAR File Complications


Frequent MAR Opening Issues

Microsoft Access Removed

You encounter an error message such as "%%os%% Can't Open MAR Files" when trying to open your MAR. Usually, this is because you do not have Microsoft Access for %%os%% installed. This will prevent you from double-clicking to open the MAR file because the OS doesn’t know how to handle it.


Tip: If you don't have Microsoft Access installed, and you know of another program to open your MAR file, you can try opening it by selecting from the programs listed under "Show Apps".


Obsolete Version of Microsoft Access

In some cases, you might have a newer (or older) version of a Microsoft Access Report file that is unsupported by your installed application version. Installing the latest version of Microsoft Access from Microsoft Corporation is recommended. The primary cause of this problem is that your Microsoft Access Report file was created by a different (newer) version of Microsoft Access than what's installed.


Tip: Find clues on the correct software version by right-clicking your MAR file and clicking "Properties".


Primarily, problems experienced when opening MAR files are due to having the incorrect version of Microsoft Access installed on your computer.


Additional MAR Opening Issues

Even with the correct version of Microsoft Access installed, you can still experience difficulties opening MARs. Other MAR opening errors can be created by other system problems inside of %%os%%. Additional factors include:

  • Invalid MAR file references in the Windows Registry (the "phonebook" of the Windows Operating System)
  • Accidental deletion of the description of the MAR file in the Windows registry
  • Invalid installation of a MAR-associated program (eg. Microsoft Access)
  • The MAR itself is corrupted
  • Your MAR is infected with malware
  • Drivers associated with MAR software need to be updated
  • Windows cannot load your Microsoft Access Report file due to insufficient resources (eg. RAM)

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