I have some problems with our TFS 2015 Build in our off shore location.
We have our main TFS in Austria and an already working proxy (TFS 2013) in India.
I have created a TFS 2015 Buildagent which is also working but it is not able to gather the files from the proxy.
I have configured the build machine like it is stated on this Microsoft site:
But it still downloads all the files from our TFS which takes up to 15 Minutes with a good connection.