title: TFS2017 build agents proxy settings
body: <p>After upgrading our TFS2015 ecosystem to TFS2017 RTM I noticed that the build times had increased significantly.  Closer inspection revealed that the get operation times were where the additional time was coming from (40 minutes longer)</p>
  
  <p>Our site is across the Atlantic to the application tier so we use a TFS Proxy server for the file downloads.  I assumed initially that the TFS2015 proxy wasn't playing nice with the TFS2017 app tier so I had it reinstalled as a TFS2017 proxy and purged the file cache.</p>
  
  <p>I watched the proxy file cache and statistics but observed no changes - implying that the proxy isn't being used.</p>