Opening CTT Files

The CTT file type is primarily associated with Windows Live Messenger.

CTTFile Extension CTT
 File extension: CTT
File type:  XML file

What is a CTT file?

CTT files mostly belong to Windows Live Messenger. Purpose and Functionality:
This CTT file is an internal XML file used by Windows Live Messenger to store your contact list. The file holds useful details about each contact in a structured way. The XML format allows the contacts to be organized properly for fast access by the messenger.
How to Open and View:
  • Open the file with an XML editor to see the structured tags.
  • Use a basic text editor to view the XML code if needed.
  • Avoid making changes unless you are sure of the correct XML syntax.
    • FilExt.com tip: This file is not meant for regular manual editing. It is designed for the application to read and maintain your contact information.

    How to open a CTT file

    You need a suitable software like Windows Live Messenger to open a CTT 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 CTT file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CTT file directly in the browser:. Just drag the file onto this browser window and drop it.

    Online CTT Text Viewer

    Choose your .ctt file to view
    ✈

    Read our privacy guarantee in Filext’s terms and privacy policy

    Please allow ads on our site

    This helps us keep our servers running. Then re-upload your file to view it.

    Click here to see how to disable the ad blocker for filext.com

    How to extract texts from CTT files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

    If you want to extract texts from CTT file or capture a screenshot, you can use our free Online CTT File Viewer:
    1. Just click the "Choose your .ctt file to view" button on this page.
    2. After your file is opened in browser,
    3. click "Save as..." in the menu.
    4. Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
    5. Download the converted file.

    Programs that open and convert CTT files:

    1. Windows Live Messenger
      See the previous paragraphs to learn more about the main application. CTT files are often referred to as Windows Live Messenger data files because this type of file is primarily created or used by this software.
    2. CAIL Suite (Terminal Emulation Data) by CAIL Systems Inc.
      CTT, in this case, stands for Cail - Total - Tandem because the product is made with Total Consulting Group and it connects to Tandem mainframe systems.
    3. LabVIEW
      Related links: Wikipedia LabVIEW Page
    4. MSN Messenger (Saved Contact List) by MSN
      This file can be opened in a text editor (e.g., Notepad). Older versions were text; newer versions are XML. The identifying characters used for this association are - Hex: 3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E 3D 22 31 2E 30 22 3F 3E 0D 0A 3C 6D 65 73 73 65 6E 67 65 72, ASCII: .?xml.version="1.0"?....messenger. This file format is classified as XML.

    Technical Data for CTT File Extension

    File classification:
    Data
    Identifier:
    Hex: 3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E 3D 22 31 2E 30 22 3F 3E 0D 0A 3C 6D 65 73 73 65 6E 67 65 72, ASCII: .?xml.version="1.0"?....messenger (provided by TrID database)
    Related files:
    vcf, wab, cct, mco, mct, eit, xml, csv, txt

    The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

    ProgramID: MessengerContactList, FileType: Messenger Contact List
    ProgramID: LabVIEWControlTemplate
    EXEFile: C:\Robolab 2.5.4\Robolab254.exe %1
    ProgramID: LabVIEWControlTemplate
    EXEFile: %ProgramFiles%\National Instruments\LabVIEW 6 Eval\LabVIEW.exe %1
    ProgramID: LabVIEWControlTemplate
    EXEFile: %ProgramFiles%\National Instruments\LabVIEW 6.1\LabVIEW.exe
    ProgramID: LabVIEWControlTemplate
    EXEFile: %ProgramFiles%\Robolab\Engine\ROBOLAB252.exe
    Show all 5 listingsTo Top

    a ctt XML file is a special file format and should only be edited and saved with the appropriate software.

    How to solve problems with CTT files

    • Associate the CTT file extension with the correct application.
    • Update your software that should actually open xml files. Because only the current version supports the latest CTT file format. Search, therefore, e.g. on the manufacturer website after an available Windows Live Messenger update.
    • To make sure that your CTT file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
    • Click here to open your .CTT file online - secure, fast, and no downloads needed.
    Drop here
    View another file
    CTT file viewer CTT file description