CONTACTS file format description

Many people share .contacts files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .contacts file can be edited, converted or printed with. On this page, we try to provide assistance for handling .contacts files.

1 filename extension(s) found in our database.

.contact - Windows Vista Contacts Data

The CONTACT data files are related to Windows Vista Contacts. The CONTACT file is a Windows Vista Contacts Data. Windows Vista provides a new mechanism and user interface for storing and retrieving information about people (contacts) who are important to the users of Microsoft Outlook and Microsoft Windows Mail (formerly Outlook Express). Windows Contacts replaces Windows Address Book (WAB) as an API for extending the contacts functionality.

Windows Vista Contacts
Data files
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Windows Vista Contacts Data related extensions:
ReliaSoft RGA Import Template
Gens Compressed Sega Genesys ROM
MacMolPlt GAMESS Input Format Data
Lightwave 3D Hypervoxel Data
IRAM Plateau de Bure Interferometer Header
Adobe InDesign Job Bag Data

Naturally, other applications may also use the .contacts file extension. Even harmful programs can create .contacts files. Be especially cautious with .contacts files coming from an unknown source!

Can't open a .contacts file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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