Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .det

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .det file?
  • Which program can create the .det file?
  • Where can you find a description of the .det format?
  • What can convert .det files to a different format?
  • Which MIME-type is associated with the .det extension?
Act! Email Message .det file icon

Act! Email Message

DET file is an Act! Email Message. ACT! by Sage is a customer relationship management (CRM) software application which is used to keep track of client and prospect details in a single database that can be shared by multiple users.
Detailed description not available
Category: Data files
Application: ACT!
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Act! Blob Data
Act! Database File
Act! Database Log
Act! Report Data
Act! Word Processor Document
Act! Template
Act! Notes Database
Act! Design Layout File
Act! Data File

Other types of files may also use the .det file extension. If you have helpful information about .det extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Hitachi COBOL2002 Data
Football Manager Data
DrawExpress Diagram Document
Binary Editor Definition Data
Certificate File
SmartWare Transact Definition File
PSpice Custom Derating
RAD Studio Desktop Settings
Proben1 Dataset

The .det filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

wet (1), de (1), set (1), cet (1), fet (1), eet (1), dwt (1), dt (1), drt (1), der (1), xet (1), def (1), vet (1), ddt (1), ret (1)

Can't open a .det file?

If you want to open a .det file on your computer, you just need to have the appropriate program installed. If the .det association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.det

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 from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android