What is .FC file extension?
Settings file used by OpenText FirstClass, an emailing and conferencing application that enables collaboration and communication between users; contains login data referenced by FirstClass to connect users to the server; may store resources, such as forms, pictures, icons, and sounds, that customize the FirstClass interface.
NOTE: If there is no settings data in the file, it will be given the .REZ extension, which means that the file only holds resources that customize the interface.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.