What is a .CTT file?
The file extension .CTT represents a Messenger Contact List file type. This type of file is used specifically by the MSN/Live Messenger instant messaging program, which was popular for online chatting. The .CTT file stores information about a user's contacts and any groups they have created within the messenger service. The content of a .CTT file is saved in a plain text format and is structured using XML (Extensible Markup Language), which is a way of encoding documents in a format that is both human-readable and machine-readable.
The primary function of a .CTT file is to allow users to export their contact lists from MSN Messenger. This is useful, for example, if a user wants to back up their contacts or share them with another user. Once exported, the .CTT file can be imported into another user's MSN Messenger, thereby transferring all the contact information.
To open a .CTT file, you can use Microsoft Windows Live Messenger, which is the updated version of MSN Messenger. Although Microsoft Messenger (also known as MSN Messenger) has been discontinued and is no longer included with operating systems, users who still have the program installed can use it to manage .CTT files. Additionally, since .CTT files are formatted in plain text XML, any basic text editor, such as Notepad on Windows or TextEdit on Mac, can be used to view and edit the contents of the file. However, to properly use the contact information, importing the file into a compatible messenger program like Windows Live Messenger is necessary.
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