.MAR File Extension

Developer: Microsoft

File Type: Microsoft Access Report


Are you having difficulty opening a file that ends with .MAR? Such files can be executed only by certain programs. If you cannot open the .MAR file, it can be due to the following reasons: either you do not have an appropriate program to open it, or your file association is corrupted. For more information about this extension, please read the article below. To fix the problem, please use a special File Association Fix Tool (recommended): download here or click the green button Fix .MAR Errors located in the right block. You can also call the support service via the phone number you see on this page to get assisted help from the experts.

What is a .MAR file?

.MAR file belongs to the category of Database Files used in operating systems such as Windows 11, 10, Windows 7, Windows 8 / 8.1, Windows Vista, Windows XP.

.MAR mar
Developer: Microsoft
File Type: Microsoft Access Report
Format: N/A

.MAR file is associated with Microsoft Access Report developed by Microsoft, has a N/A Format and belongs to Database Files category.

How to open a .MAR file?

Execute .MAR file by double-clicking on it. If you have already installed the software to open it and the files associations are set up correctly, .MAR file will be opened. If Windows keeps asking you what program should be used to open the file, the problem is most possibly caused by broken files associations.

Damaged file associations occur as a result of Windows registry errors. To fix these issues, please follow the steps below.


We do not recommend trying to fix the problem manually if you do not have sufficient computer knowledge. It is recommended to use automatic tools or address field experts

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warn There are 2 other file types using the .MAR file extension
file  .mar

Mozilla Archive

file  .mar

Mariner Calc Spreadsheet

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