Opening a VDM File

The VDM file type is primarily associated with Outlook.

VDM	File extension: VDM
	File type:	views

What is a VDM file?

VDM files mostly belong to Outlook by Microsoft. A VDM file is a macro that vEdit uses to automate the process of editing/converting large text files. VDM is also the filename extension of computing system models source code written in VDM Specification Language (VDM-SL) or VDM++ in accordance with Vienna Development Method. Such VDM files are created with VDMTools integrated development environment. Another type of VDM file is a virus definition module for Defender, a built-in Windows antivirus. Defender uses a virus definition module to store information identifying known Windows threats. The iManage component of Outlook email client saves views in VDM files.

How to open a VDM file

You need a suitable software like Outlook to open a VDM file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your VDM file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a VDM file directly in the browser:. Just drag the file onto this browser window and drop it.

Online VDM Text Viewer

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Online File Viewer

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Programs that open and convert VDM files:

Outlook by Microsoft
See the previous paragraphs to learn more about the main application. VDM files are often referred to as Outlook data files because this type of file is primarily created or used by this software.
Defender (virus definition module) by Microsoft
Defender is an antivirus/anti-ransomware program bundled with Windows operating system. It uses virus definition modules saved in VDM files. This file format is classified as Executable.
SolidCut (graphics/machining data) by Hexagon
SolidCut is a discontinued computer-aided design/manufacturing software with CNC machining and NURBS support. It uses a VDM file to store graphics and machining data. This file format is classified as CAD.
VDMTools (computing system model) by The Overture Project
VDMTools is a Windows and macOS-compatible integrated development environment used to develop computing system models. It uses a VDM file to save the source code of a computing system model. This file format is classified as Developer. Related links: Vienna Development Method
vEdit (macro) by vEdit
vEdit is a desktop application for editing and converting large text, binary, and hexadecimal files. A macro used to automate editing/conversion operations in vEdit is saved in a VDM file. This file format is classified as Developer. Related links: Description of VEDIT Macro Capability
VI-Viewer-Pro (surveillance video) by Videoswitch
VI-Viewer-Pro is a discontinued program for viewing surveillance footage captured by Videoswitch surveillance cameras. Videos recorded by such systems are saved in VDM files. This file format is classified as Video.

VDM file format:

The file format, which is the arrangement and type of data in a file, determines which program can open the file. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. So you need a detailed analysis of a file to find out the format and the associated program. Below you will find our evaluation of the VDM files:

The VDM file extension is not common and is used by a few programs, each with its own file format. The following file formats are most commonly found in VDM files:

35% of all VDM files are Microsoft Windows Defender Virus Definition Module files, which are based on the EXE file format. EXE is the abbreviation for executable and is the standard executable file format on Windows. The format can be identified by the letters "MZ" at the beginning. Executable files can also be used to distribute viruses and other types of malicious software (malware). These files contain neither text nor words, but only data. The files are 900 KB to 50 MB in size, with a median of 8 MB. Certain words are almost always found in the files, such as !This program cannot be run in DOS mode and Rich. The file name mpasdlta.vdm or mpasbase.vdm is typical for these files. These files are attributed to mpavbase.
25% of all VDM files start with the bytes PKZVDM, which are crucial for this file format. They consist of illegible, cryptic characters. The file size is in the range of 3 KB to 130 KB. The files contain the following words: PKZVDM.

All other VDM files (40%) have different formats. Drag & drop your file here to see the file format and a preview of your VDM file!

Technical Data for VDM File Extension

File classification:

Data

Related files:

vmb, wdm, vdb, jpg, exe, rpmsg, email, sig

a vdm view is a special file format by Microsoft and should only be edited and saved with the appropriate software.

How to solve problems with VDM files

Associate the VDM file extension with the correct application.
Update your software that should actually open views. Because only the current version supports the latest VDM file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available Outlook update.
To make sure that your VDM file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
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