Having problems opening a cnt file?

Find out what programs can help open, view, play or convert your cnt files.

Opening cnt files
Help Contents File

Did your computer fail to open a cnt file? We explain what cnt files are and recommend software that we know can open or convert your cnt files.

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What is cnt file?

Help file used by Windows; contains topics relevant to a certain Help document; may be created Microsoft Help Workshop, a program for developing help documentation. NOTE: There is a known security issue with CNT files that allows them to be exploited, causing a stack-based buffer overflow. This can be used to run malicious code. Therefore, do not open unknown CNT files.

Software that will open, convert or fix cnt files

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