I just made a copy of our remote (hosted) site in XAMPP (locally) for development and testing purposes.
To do this I made a virtual host in XAMPP, with our domain name as servername, and with the website files in exactly the same file path as on the remote server.
After adjusting databases addresses and passwords to localhost, root etc, the complete site now runs smootly wihin the (local) XAMPP application, after typing the domain name
in internet explorer.
However, there is still a problem with the phpbb3-forum, you can't login. (more precisely: the login is partially completed: the forum mentions you in the list of
logged in registered users, but when you want to post a message, it says you have to login first)
I checked and rechecked the cookie settings for the forum but that does not seem to be the problem.