To change default title do following
1. locate *\Clients\www\software\html5\settings.js
    (if you use third part server like IIS/Apache then look inside their default root folders)

2. locate inside that file settings.js following string

W.setDocuTitle = function() { try { document.title = "HTML5"; } catch(b) { } }(); 

3. change default string “HTML5” to wished one.

To set own favicon 

1. locate folder *\Clients\www\ 

    (if you use third part server like IIS/Apache then look inside their default root folders)

2. place your favicon.ico inside that folder like in example *\Clients\www\favicon.ico

3. go sure your favicon.ico is accessible via http(s)://your_server.com/favicon.ico

PS: the favicon.ico works fine for FireFoxChromeIE11 browsers. However IE Edge 12 has unspecified behavior on https:// protocol (as example unsigned domain), so use working browsers if you want to display your specific favicon since this tutorial does not describe how to workaround third part issues. Tickets regarding such questions about IE Edgewill be discarded as not RDPlus related to be fixed. If favicon is not displayed on FireFoxChrome or IE11, then delete cache, and check format of your icon image