Hav'nt done that yet, but I guess the server cannot identify your LWP::UserAgent as a browser that supports frames? Thus, it sends a notification about that. The manual says, that agent (will be the User-Agent: HTTP header attribute) is set to "libwww-perl/#.##" by default. Try to change this to e.g. Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0). HTH