Recently I had an issue where my Skype login screen wasn’t rendering properly, showing something like; After doing some searching around I found the following Skype forum which had a solution; http://community.skype.com/t5/Windows-desktop-client/Skype-6-10-0-104-BIG-Login-screen-problem/td-p/2064269/page/6 Turns out that this is caused by a registry key setting css to text/plain rather than text/css. Simply setting “HKEY_LOCAL_Machine > Software > [...]