FrontPage Extensions are system files which need to be present on a web server for particular features of sites created with Microsoft FrontPage to operate effectively. In case these files aren't on your server, the websites will still function, but with limited capabilities and they will probably display errors every so often. In addition, in case your web hosting supplier has FrontPage Extensions on their servers, you'll be able to publish your content from the program, eliminating the necessity to use any third-party FTP client in order to upload files. All you should do is to enter you web hosting account FTP details in the FrontPage settings and the software will do all the rest. Future updates can be performed in exactly the same way, making FrontPage an excellent option for people with minimum or no experience.