Can't reach

I can't load from my work computer, but I can from my home computer. This seems to have started happening on Friday. I tried Chrome, Firefox, and IE. They all fail to load the site. Chrome says:

This site can’t be reached unexpectedly closed the connection.

  • Checking the connection
  • Checking the proxy and the firewall
  • Running Windows Network Diagnostics

All other sites I've tried work fine. Any suggestions?