vswhere: vswhere hangs on Windows 2008 R2

I first reported my issues over on vsts-agent, but I’m fairly sure it belongs here. https://github.com/Microsoft/vsts-agent/issues/1090

Windows 2008 R2 server with the latest windows updates.

for /L %n in (1,1,100) do "vswhere.exe" -version [15.0,15.1) -latest -format json

If I run this, it will eventually hang. I might have to run that a couple times, but on my machine I can always get it to hang.

I ran it a few times on a Windows 2016 server and I never got a hang.

I tried v1.0.62 and v2.0.2