File Extension Library

.CTT File Extension

  • Developer by: Microsoft
  • Category: Data Files
  • Format: XML

What are .CTT files and how to open them?

Can't open .CTT file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .CTT file.

What is a .CTT file extension?

.CTT file extension is created by Microsoft. .CTT has been classified as Data Files. The format of .CTT file is XML.

.CTT is Messenger Contact List

Stores a list of contacts and groups used by the MSN/Live Messenger instant messaging program; saved as a text file and formatted in XML; can be exported from MSN Messenger and imported by another user.

Contacts saved in a CTT file can be imported into Messenger by selecting File→Import Contacts from a Saved File.

NOTE: Windows Live Messenger was discontinued in 2013 and has moved to Skype.

List of all softwares that can open the Messenger Contact List
Microsoft Messenger

How to fix problems with .CTT files

  1. You need to update the application that you normally use to open .CTT files. Only the latest version of the software supports the current .CTT file format
  2. You need to check the .CTT file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)