What is a .CTT File And How To Open It – Microsoft

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Have you downloaded a file with .ctt extension, but you have never seen this extension before? It is possible that you know what the file does, but you are unsure on how to open it. In this article we will explain what .ctt file extension is, how to open it and how to work with it.

What is a .CTT file?

The file extension .CTT is Messenger Contact List. The developer of this file extension is Microsoft. This file belongs to the xml format and it is a data related file.

What to know

There is currently 0 software that can open the .ctt file on 0 platforms.


There are currently no software associated with this file extension, if you have any information please let us know.