MAS File Extension

MAS file icon

Microsoft Access Stored Procedures Format

What is a MAS file?

Files with the MAS extension are associated with Microsoft Access Stored Procedures Format and are categorized as Blocked Email Attachment Files and Data Files, making up 6272 files.

The Microsoft Access Stored Procedures Format (MAS), created by Microsoft, is one of file format they developed, and they also built 242 programs to support them.

MAS file support extends to various operating systems, including Windows. When working with MAS files, you can rely on 2 programs, including Microsoft Access and Microsoft Office.

Programs that support MAS files

How to open a MAS file?

If you can’t open a MAS file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.

When it comes to opening and working with MAS files, Microsoft Access and Microsoft Office are the top choices for users. To install the updated version of Microsoft Access, simply go to the Microsoft site and download the installer compatible with all major platforms.

Once the process is complete, Microsoft Access should take over as the default application for MAS files.

Set Microsoft Access as the default MAS program

Changing Default Programs in Windows

  1. Right-click on your MAS file, then choose the "Open with" option and select "Choose another application" from the available options;
  2. In the pop-up window, select the Microsoft Access application;
  3. Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening MAS files.

Change Default Program on Mac

  1. Right click or Control + left click on the desired MAS file;
  2. Select "Open in application" and click "Other";
  3. At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
  4. Choose "All Programs" in this menu and search for Microsoft Access. Check the box next to "Always open in app" to make it the default program.

Solve problems with MAS files

Rest assured, any issues with MAS files can typically be addressed with simple software adjustments. See the tips below for help.

Why does Microsoft Access stop responding or crash intermittently?

Microsoft Access crashes can be caused by outdated software. Keep your Microsoft products up to date by installing the latest updates.

Restarting your computer will solve many common problems, which is why it’s the first thing you should do before changing any settings related to the software.

What are the best practices for repairing a MAS file that has gone bad?

Use a data recovery program to open the damaged MAS file and from the menu choose "Repair" function to start the repair process. Allow the recovery process to complete, which will automatically repair the damaged blocked email attachment files.

What are the warning signs that my MAS file may be corrupted?

Common indications of damaged MAS blocked email attachment files are:

  • Error messages appear during the course of working with the file;
  • Opening the file results in an error or a failed attempt;
  • Unexpected expansion of the total size of the MAS file;
  • Opening the file in Microsoft Access or other programs causes them to hang or crash;