File Extension Database

Open CNT File

CNT files are plain text files used by Microsoft Windows as helpers to HLP files that are help documents.

The CNT files store the themes of the HLP files and are installed automatically when the operating system is installed.

Although CNT files are installed by the OS, they can be created and edited using Microsoft Help Workshop, an older program for creating help documentation.

Currently the prevailing format for Windows Help is HTML, however old HLP and CNT files can be updated and converted using HTML Help Workshop.

There is a known vulnerability of CNT files that takes advantage of buffer overflow to exploit a malicious code execution on your computer, therefore unknown CNT files should not be opened.

How to Open CNT File on Windows

How to Open CNT File on Mac OS

How to Open CNT File on Android

If you downloaded a CNT file on Android device you can open it by following steps below:

How to Open CNT File on iPhone or iPad

To open CNT File on iOS device follow steps below:

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CNT file article translations

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