How to open CNT files

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 files.

What is a CNT file?

Files that contain the .cnt file extension are used by Microsoft Windows to index the help files that are used by the Windows operating system. These files can be created by the Microsoft Help Workshop application, a program that is used to develop help documentation for the Windows OS.

The actual help files that are used by this program are saved with the .hlp file suffix. The table of contents files that organize the HLP files are saved with the .cnt file extension. CNT files are optional files and not all Windows HLP files with have a CNT file associated with it.

Software that will open, convert or fix CNT files

These apps are known to open certain types of CNT files. Since many different programs may use CNT files for different purposes, you may need to try a few of the apps to open your specific CNT file.

Help WorkshopHelp WorkshopUser submitted
Microsoft OfficeMicrosoft OfficeUser submitted
Any Video Converter FreeAny Video Converter FreeUser submitted
PDLPDLUser submitted
ProVenture InvoicesProVenture InvoicesUser submitted
Emb ApplicationEmb ApplicationUser submitted
Celframe Office Note MakerCelframe Office Note MakerUser submitted
PicasaPicasaUser submitted
We have not verified any programs that we know for certain can work with CNT-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with CNT-files. If you know one, please use the Suggest link below and tell us about it!