Sorts of VDM Files

Primary VDM File Association

.VDM

File ID:	.vdm
Type:	VDM Specification File

A VDM file is a source code file of a program based on VDM (the Vienna Development Method). It contains code written in the VDM-SL or VDM++ languages.

Programmer:	Overture Tool
Kind:	Developer Files
Entry:	HKEY_CLASSES_ROOT\.vdm

Software Programs That Open The VDM Specification File:

VDM Tools by Overture Tool

Windows

Mac

Linux

Additional VDM Files

.VDM

File ID:	.vdm
Type:	Vedit Macro File

A VDM file is macro or script file used by text editor VEDIT. The script is written in the VDM language which automates small tasks such as formatting, text replacements, or translating between text encodings.

Programmer:	Greenview Data Inc.
Kind:	Developer Files

Software Programs That Open Vedit Macro File Files:

VEDIT by Greenview Data Inc.

Compatible with:

Windows

.VDM

File ID:	.vdm
Type:	Videoswitch Security Video Recording

The VDM file extension is also associated with the Videoswitch C.C.T.V. security camera systems and security recording software. It usually contains captured digital video from Videoswitch security cams.

Programmer:	Ocean Systems
Kind:	Video Files

Software Programs That Open Videoswitch Security Video Recording Files:

Vi-Viewer by Ocean Systems

Compatible with:

Windows

.VDM

File ID:	.vdm
Type:	Microsoft Windows Defender Malware Definition Data

The VDM file extension is associated with Microsoft Windows Defender and Security Essentials. It stores malware and virus definitions and descriptions.

Programmer:	Microsoft Corporation
Kind:	Data Files

Software Programs That Open Microsoft Windows Defender Malware Definition Data Files:

Microsoft Windows Defender by Microsoft Corporation

Compatible with:

Windows

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Sources of VDM Problems

Frequent VDM Opening Issues

Missing VDM Tools

When you double-click your VDM file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". If this is the case, it's usually due to the fact that you do not have VDM Tools for %%os%% installed on your computer. Because your operating system doesn't know what to do with this file, you won't be able to open it by double-clicking.

Tip: If you don't have VDM Tools installed, and you know of another program to open your VDM file, you can try opening it by selecting from the programs listed under "Show Apps".

Obsolete Version of VDM Tools

Occasionally, you might have an outdated version of VDM Tools installed that's incompatible with your VDM Specification File type. If you've got the wrong version of VDM Tools installed, you'll need to install the correct version. The primary cause of this problem is that your VDM Specification File file was created by a different (newer) version of VDM Tools than what's installed.

Tip: Find clues on the correct software version by right-clicking your VDM file and clicking "Properties".

Summary: Not having the right VDM Tools version on your computer can cause problems opening VDM files.

Associated Difficulties Loading VDM Files

Errors opening VDM Specification File files can still occur even with the latest VDM Tools software installed on your computer. Other VDM opening errors can be created by other system problems inside of %%os%%. Additional factors include:

• Windows Registry VDM file paths that are incorrect
• Corruption of the VDM file description inside the Registry
• Corrupt install of VDM Tools or other VDM-related program
• Your VDM file is corrupted (issues with your VDM Specification File file itself)
• Your VDM has adversely impacted by malware
• Device drivers of the hardware associated with your VDM file are corrupt or out-of-date
• Windows has inadequate resources to open your VDM Specification File file