Internet Explorer includes an option to load a local stylesheet to set browser based preferences for web page styles. This feature can be exploited by unauthorized programs to implement unrequested popups and malicious tracking of user activity. This tweak allows you to disable local stylesheets.

To disable the local Stylesheets in the Internet Explorer, follow the next steps:

1. Open your registry Start -> Run, type "regedit" and click OK.
    
2. Expand HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Styles (see picture 1).
   
   

   Picture 1

3. Create a new DWORD value, or modify the existing value, called "Use My Stylesheet" and set it according to the value data above.
    
4. The modifications you made will be in effect after you restart or logout you PC.