MDT File Type

Written by:   |   Revised: November 26, 2018

Microsoft Silver

MDT File Summary

Most MDT files can be viewed with two known software applications, typically Microsoft Access developed by Microsoft Corporation. It's main file type association is the Microsoft Access Data File format, but also includes one other rarely-seen file types. The majority of MDT files are considered Data Files, but they can also be Database Files.

The MDT File Extension can be viewed on the Windows operating system. They are supported on both desktop and mobile devices. The Popularity Rating for MDT files is "Low", which means these files are not ordinarily found on an everyday user's device.

To learn more about MDT files and their associated software applications, please see the information below. Plus, we provide a basic troubleshooting guide to solve problems with opening MDT files.

Low
File Type Popularity
8319
Standing

/ 11690

Active

File Status

26

November

2018

Refreshed

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Varieties of MDT Files

  2 known file types use this extension

Principal MDT Type

.MDT
File Ext:.mdt
File Type:Microsoft Access Data File

MDT file stores data used for Microsoft Access, and may include data for software add-ins. These MDT files were used by Microsoft Access prior version 2007 for templates used when creating new databases.

Author: Microsoft Corporation
Group:Data Files
Key: HKEY_CLASSES_ROOT\.mdt

Software Programs That Open The Microsoft Access Data File:


Microsoft Access by Microsoft Corporation

Windows

Other MDT File Associations

.MDT
File Ext:.mdt
File Type:GeoMedia Access Database Template

MDT File saves the default structure of an Access database. Also, it is used for initializing an Access database (.MDB) file with geospatial data.

Author: Intergraph Corporation
Group:Database Files

Software Programs That Open GeoMedia Access Database Template Files:


Intergraph GeoMedia by Hexagon Geospatial

Compatible with:

Windows

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MDT File Popularity


Leading Device Types

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


Troubleshooting Problems Opening MDT Files


Troubles Opening MDT Files

Microsoft Access Removed

When you double-click your MDT file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". Generally, this is experienced in %%os%% because Microsoft Access isn't installed on your PC. The OS won't know what to do with your MDT file, so double-clicking to load the file doesn't work.


Tip: If you have another software that you know opens MDT files, you can select it by hitting the "Show Apps" button.


Obsolete Version of Microsoft Access

In other instances, your Microsoft Access Data File file version may not be supported by your version of Microsoft Access. You will need to download a newer version of Microsoft Access if you don't have the right version. The primary cause of this problem is that your Microsoft Access Data File file was created by a different (newer) version of Microsoft Access than what's installed.


Tip: You can sometimes get hints about the right program version by right-clicking on the MDT file, selecting "Properties", and looking at the version information.


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


Other MDT File Opening Causes

Although you might already have Microsoft Access or another MDT-associated software installed on your computer, you can still encounter problems opening Microsoft Access Data File files. If you're still experiencing problems opening MDT files, there could be other computer problems. Additional factors include:

  • Invalid MDT file references in the Windows Registry (the "phonebook" of the Windows Operating System)
  • Deletion of the MDT file description from the Registry by mistake
  • Defective install of a MDT program, such as Microsoft Access
  • The MDT itself is corrupted
  • Past or present virus infection has affected your MDT
  • Hardware associated with MDT has outdated drivers
  • Insufficient system resources to successfully open Microsoft Access Data File files

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