.3MM File Recovery

Have files been deleted due to a user’s error or software error? Have you formatted a disk by accident and need to know how to recover the files? Read our .3MM file recovery guide for Windows, MacOS, Android and IOS in 2024.

3MM File Recovery

What is a .3MM file?

Movie or animation created with 3D Movie Maker (3DMM) for Windows; includes a 3D scene with three-dimensional characters and objects; may also contain music, sound effects, speech, and special effects.

What Are Common Causes of ".3MM" Files Lost or Failure?

There can be several common causes for ".3MM" files being lost or experiencing failure. Some of these causes include:

  1. Accidental deletion: Users may accidentally delete ".3MM" files while organizing or cleaning up their storage devices.
  2. Software or hardware issues: Malfunctioning software or hardware components can lead to file corruption or loss. This can occur due to power outages, system crashes, or issues with storage devices such as hard drives or memory cards.
  3. Virus or malware attacks: Viruses or malware can infect and corrupt ".3MM" files, making them inaccessible or causing them to be deleted.
  4. Formatting errors: Incorrect formatting of storage devices can result in data loss, including ".3MM" files.
  5. Human errors: Human errors, such as improper handling of storage devices, accidental formatting, or improper file transfers, can lead to the loss of ".3MM" files.
  6. File system errors: File system errors, such as file system corruption or errors in the file allocation table, can cause ".3MM" files to become lost or inaccessible.
  7. Physical damage: Physical damage to storage devices, such as dropping a hard drive or exposing it to extreme temperatures or moisture, can result in the loss of ".3MM" files.
  8. Software conflicts: Incompatibilities or conflicts between different software applications can lead to file corruption or loss, including ".3MM" files.

It is important to regularly backup ".3MM" files and implement proper data recovery measures to minimize the risk of losing important data.

How to recover lost ".3MM" files?

Sometimes while working with a computer, laptop or other stationary or mobile devices, you may encounter various bugs, freezes, hardware or software failures, even in spite of regular updates and junk cleaning. As a result, an important ".3MM" file may be deleted.

Go to view
🧺 How to Recover Files and Folders After Sending Them to the Recycle Bin and Deleting? (Windows 11)

🧺 How to Recover Files and Folders After Sending Them to the Recycle Bin and Deleting? (Windows 11)

By no means should you think that the only way to recover a ".3MM" file is always to create it once more.

Use programs for recovering ".3MM" files if a file was lost after accidental or deliberate deleting, formatting the memory card or the internal storage, cleaning the storage device, after a virus attack or a system failure.

Programs to recover ".3MM" files

Looking for a way to get files back? In cases when files were deleted and they cannot be restored by using standard operating system tools, use Hetman Partition Recovery.

Partition Recovery™ 4.9
The tool recovers data from any devices, regardless of the cause of data loss.

Follow the directions below:

  1. Download Hetman Partition Recovery, install and start the program.

  2. The program will automatically scan the computer and display all hard disks and removable drives connected to it, as well as physical and local disks.

    File Recovery Software
  3. Double-click on the disk from which you need to recover ".3MM" files, and select analysis type.

    Hetman Partition Recovery - Analysis Type
  4. When the scanning is over, you will be shown the files for recovery.

    Hetman Partition Recovery - Files that Can be Restored
  5. To find a file you need, use the program’s interface to open the folder it was deleted from, or go to the folder "Content-Aware Analysis" and select the required file type.

    Hetman Partition Recovery - Deep Scan
  6. Select the files you have been looking for and click "Recovery".

    File Recovery Software - Files List for Recovery
  7. Choose one of the methods for saving the files and recover them.

    Saving recovered files in Hetman Partition Recovery

How to open file with ".3MM" extension?

Looking for how to open a stereo 3D Movie Maker Movie Project image file file?

Programs that open ".3MM" files

HEX Editor HEX Editor

Additional Information

  • File type: 3D Movie Maker Movie Project

  • File extension: .3MM

  • Developer: Microsoft

  • Category: Video Files

  • Format: Binary

  • HEX: 43 48 4E 32 20 43 4F 53



We will be happy to answer your questions!

Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 16:10 #
    Leave a comment if you have any questions about Recovering lost .3MM files after deleting, cleaning or formatting!
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Vladimir Artiukh

Author: Vladimir Artiukh, Technical Writer

Vladimir Artiukh is a technical writer for Hetman Software, as well as the voice and face of their English-speaking YouTube channel, Hetman Software: Data Recovery for Windows. He handles tutorials, how-tos, and detailed reviews on how the company’s tools work with all kinds of data storage devices.

Oleg Afonin

Editor: Oleg Afonin, Technical Writer

Oleg Afonin is an expert in mobile forensics, data recovery and computer systems. He often attends large data security conferences, and writes several blogs for such resources as xaker.ru, Elcomsoft and Habr. In addition to his online activities, Oleg’s articles are also published in professional magazines. Also, Oleg Afonin is the co-author of a well-known book, Mobile Forensics - Advanced Investigative Strategies.


Questions and answers

  • What are the common reasons behind problems opening .3MM files, and how can they be fixed?

    The .3MM file extension is not a widely known or common file format. Therefore, it is difficult to provide specific reasons for problems opening .3MM files. However, here are some general possibilities and potential solutions:

    1. Incompatible software: If you don't have the appropriate software installed to open .3MM files, you may encounter issues. Research the file type to determine which software is compatible and install it.
    2. File corruption: It's possible that the .3MM file has become corrupted, which can prevent it from opening. Try obtaining another copy of the file from a trusted source and attempt to open it again.
    3. Incorrect file extension: Sometimes, the file extension may be incorrect or missing altogether. Ensure that the file is correctly named with the .3MM extension. If needed, rename the file by adding the appropriate extension.
    4. Outdated software version: If you have the necessary software to open .3MM files but it is outdated, it may lack support for the latest file format. Check for updates to the software and install them to ensure compatibility.
    5. File conversion required: If the .3MM file is in a specialized or proprietary format, it may need to be converted to a more common format before it can be opened. Look for file conversion tools or consult the software provider for guidance.
    6. File association issues: Sometimes, the file association for .3MM files may be incorrect or missing, causing problems when trying to open them. Right-click on the file, select "Open With," and choose the appropriate software to associate with .3MM files.

    Remember that the specific steps to fix problems opening .3MM files may vary depending on the file and the software you are using.

  • Are there any specific software or tools that can help resolve issues with opening .3MM files?

    There are several software and tools that can help resolve issues with opening .3MM files. Here are a few options:

    1. 3D Model Viewer: Use a specialized 3D model viewer software like Autodesk Fusion 360, SolidWorks, or FreeCAD. These tools support various file formats, including .3MM, and allow you to open and view 3D models.
    2. 3D Printing Software: If the .3MM file is related to 3D printing, you can try using slicing software like Ultimaker Cura or PrusaSlicer. These tools convert 3D models into printable instructions and often support .3MM files.
    3. File Conversion Tools: If you need to convert the .3MM file into a different format, you can use file conversion tools like MeshLab or Online 3D File Converter. These tools can convert .3MM files to more common formats like .STL or .OBJ, which can be opened in various 3D modeling software.
    4. Online 3D Model Viewers: There are online platforms like Sketchfab or 3D Viewer Online that allow you to upload and view 3D models directly in your web browser. These platforms often support multiple file formats, including .3MM.

    Before using any software or tool, ensure that it supports the .3MM file format specifically, as it might not be a widely used format and could require specialized software.

  • Are there any alternative file formats or conversion methods that can be used as a workaround for opening .3MM files if the problem persists?

    If you are unable to open .3MM files, there are a few alternative file formats or conversion methods you can try as workarounds:

    1. Convert .3MM to .STL: .STL (STereoLithography) is a widely used file format for 3D printing. You can use a file conversion tool or 3D modeling software to convert .3MM files to .STL format.
    2. Convert .3MM to .OBJ: .OBJ (Wavefront OBJ) is another commonly used file format for 3D models. Many 3D modeling software applications support .OBJ files. You can use a file conversion tool or 3D modeling software to convert .3MM files to .OBJ format.
    3. Use a 3D modeling software: Instead of directly opening .3MM files, you can import them into a 3D modeling software that supports the .3MM format. From there, you can export or convert the file to a more widely supported format like .STL or .OBJ.
    4. Contact the file's creator: If you received the .3MM file from someone else, you can reach out to them and ask if they can provide the file in a different format that you can open.

    Remember, the availability of alternative file formats or conversion methods depends on the specific software and tools you have access to.

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