Hey Platonides, thanks for the tips. Strangely enough this morning calling <http://mywiki.com/> (without www.) works fine and redirects to the main page. I swear I do not sleepwalk and did not change anything in my sleep, so I do not understand why now it is working. Some caching issues in my browser maybe? Hmmm .... Anyway, another question: If I call the root, with or without www., I get redirected to the main page without www. But if I call content with www., I get the content with www. You say I can set a canonical URL (either with or without www.) in $wgServer. This is not defined in my LocalSettings.php, so I guess mediawiki falls back on DefaultSettings.php, where there is this code snippet: ---code--------------- /** URL of the server. It will be automatically built including https mode */ $wgServer = ''; if( isset( $_SERVER['SERVER_NAME'] ) ) { $wgServerName = $_SERVER['SERVER_NAME']; } elseif( isset( $_SERVER['HOSTNAME'] ) ) { $wgServerName = $_SERVER['HOSTNAME']; } elseif( isset( $_SERVER['HTTP_HOST'] ) ) { $wgServerName = $_SERVER['HTTP_HOST']; } elseif( isset( $_SERVER['SERVER_ADDR'] ) ) { $wgServerName = $_SERVER['SERVER_ADDR']; } else { $wgServerName = 'localhost'; } # check if server use https: $wgProto = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https' : 'http'; $wgServer = $wgProto.'://' . $wgServerName; # If the port is a non-standard one, add it to the URL if( isset( $_SERVER['SERVER_PORT'] ) && !strpos( $wgServerName, ':' ) && ( ( $wgProto == 'http' && $_SERVER['SERVER_PORT'] != 80 ) || ( $wgProto == 'https' && $_SERVER['SERVER_PORT'] != 443 ) ) ) { $wgServer .= ":" . $_SERVER['SERVER_PORT']; ---/code-------------- If I set $wgServer = 'http://mywiki.com'; in LocalSettings.php, there is no change that I can percieve: I don't get redirected from <http:// www.mywiki.com/wiki/Mainpage> to <http://mywiki.com/wiki/Mainpage>, and the links on <http://www.mywiki.com/wiki/Mainpage> all point to other www. pages. So, what does $wgServer actually do, when I define it, and should I use .htaccess to redirect from with-www. to without? Also, if I log in at <http://mywiki.com/wiki/Mainpage>, if I call <http://www.mywiki.com/wiki/Mainpage>, I am not logged it. Why is that? ~ Manfred