MB File Extension

MB file icon

Maya Binary Project Format

What is a MB file?

The MB file extension is linked to Maya Binary Project Format and belongs to the 3D Image Files category, which includes 618 files.

The Maya Binary Project Format (MB) was developed by Autodesk, which created file format and 45 programs to work with them.

MB files are supported by Windows. To open a MB file, you can choose from 3 programs such as Autodesk Maya, Unity and PolyTrans.

File Signature

HEX code: 46 4F 52 34. ASCII code: FOR4.

Programs that support MB files

How to open a MB file?

If you cannot open a MB file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.

The most popular programs for working with MB files are Autodesk Maya, Unity and PolyTrans. To install the latest version of Autodesk Maya on your computer, visit the Autodesk website where you can download the version available for all operating systems.

Once Autodesk Maya is installed, the OS should configure it as the default tool for opening MB files.

Set Autodesk Maya as the default MB handler

Changing the default program in Windows

  1. Right click on your MB file, then select "Open with" and click "Choose another application";
  2. In the pop-up window, find and select the Autodesk Maya application from the available options;
  3. Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening MB files.

Choose an app to open a file on Mac

  1. Right click or use Control + left click on the desired MB file to launch the file options menu;
  2. Select "Open in application" and click "Other";
  3. Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
  4. In this menu, select "All Programs" and search for Autodesk Maya. Check the box next to "Always open in app" to make it the default option.

Convert to and from MB

If you have trouble working with a MB file, try converting it to JPEG, OBJ, TIF, FBX, X3D or similar 3d image files.

Please note that after converting a MB file, some functionality may differ from the original. However, in many cases, it can be converted back to its original format.

Autodesk Maya are offline programs that convert MB files to alternative formats without compromising data quality.

Convert MB to other file formats

Converting Files to MB Format

Effective solutions for MB file problems

If MB files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.

How do I know if my MB file is corrupted?

Corrupted MB 3d image files may have one or more of the following symptoms:

  • The file does not open or opens with errors;
  • Poor performance when editing a file in Autodesk Maya;
  • File hangs or crashes in Autodesk Maya or other programs;
  • Unexplained increase in MB file size;
  • Error messages appear while working with the file;

Why does Autodesk Maya crash?

The likely cause of Autodesk Maya crashing is lack of software updates. Install the latest updates available for Autodesk products.

Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.

How to repair a corrupted MB file?

Open the corrupted MB file in a recovery program and select the "Repair" menu item. Then wait for the recovery process to complete, which allows you to automatically repair corrupted 3d image files.

How to edit a MB file?

To edit MB files, you need to install specialized software that allows you not only to open but also to modify 3d image files. Online MB editors usually provide fewer features than software created specifically for Maya Binary Project Format.

Best MB editors in 2026

According to these factors, we have compiled a list of available MB editors.

MB Editor SoftwareDeveloperPlatformsOverall Rating
Autodesk MayaAutodeskWindows4.2 out of 5 (39 reviews)