How to open CNF files

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

What is a CNF file?

Files that contain the .cnf file extension are most commonly associated with telnet connection files. These CNF files store the information that the computer uses in order to make a telnet connection.

Files with the .cnf extension may contain the name of the telnet server that is being used as well as the username and the password of the telnet user. The CNF file that is used by the server software works like a shortcut, allowing users quick access to commonly-used telnet sessions.

Lotus 1-2-3 has also been known to use the .cnf file suffix. These CNF files contain the configuration files that are referenced during the use of the Lotus 1-2-3 application.

Software that will open, convert or fix CNF files

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

PCSX2 - Playstation EmulatorPCSX2 - Playstation EmulatorUser submitted
Notepad++Notepad++User submitted
Any Video Converter FreeAny Video Converter FreeUser submitted
ADDON's SCRIBEADDON's SCRIBEUser submitted
Co*STARCo*STARUser submitted
SPIGAO SCRIBE_BTPSPIGAO SCRIBE_BTPUser submitted
SPIGAO SCRIBESPIGAO SCRIBEUser submitted
Direct KiSSDirect KiSSUser submitted
We have not verified any programs that we know for certain can work with CNF-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 CNF-files. If you know one, please use the Suggest link below and tell us about it!