title: Visual Studio 2015 test explorer doesn't show any test after update
body: <p>I updated my Visual Studio Community 2015 (Update 3) and it doesn't show the unit tests of my project at all! I've tried to reinstall VS, it changed nothing, and it also shows we the message "connected services package failed" (and I don't know what it is). And I can't find out how to download an older version of Visual Studio that works, from their idiotic site. I asked the question at their community, nobody answered. Help me! I can't work without tests!!!</p>