Silverlight not working because of font issue

If Silverlight is installed correctly, but still not working, check for Windows Fonts with an ampersand in the name and remove them:

http://connect.microsoft.com/VisualStudio/feedback/details/719317/silverlight-5-error-1001-font-filename-issue

Uneasy way to determine proxy server

Open a command prompt and perform the following steps:

1. Inspect the output of netstat -an | find "EST" (short from 'ESTABLISHED')
2. Go to a fresh site (one that you have not recently visited)
3. Run the netstat command again, looking for the new connection. It might look like:
   TCP 192.168.1.1:1989 192.168.1.88:8080 ESTABLISHED

(credits go to Royce Williams)

Alternatively, install TCPView and look at the remote address and remote port columns for the browser connections.