What is a WCF file? A WCF file is a chat log created by WebEx, a web conferencing platform used for online meetings, webinars, and virtual training sessions. It contains a record of text messages exchanged during a meeting, including the date and time the participants sent their messages. WebEx automatically generates WCF files if chat logging is enabled during a session.

More Information Meeting hosts, presenters, and attendees primarily use WCF files for documentation, follow-up communication, or record-keeping of a chat conversation after a session ends. Because the files store only chat messages and not audio, video, or screen sharing content, WCF files offer a lightweight way to preserve the text-based interactions from a WebEx session.