Hi @RobIII , Thanks for sending that over; we've reviewed it, but nothing is jumping out as a problem. I'm thinking it's something else... Can we do this? At first, let's move this to a new topic. I'm going to lock this thread, can you reply as a new topic? The reason for this is so that we can track much easier. Is it possible to share access to your GitLab repository? That's the easiest thing of course, but you say "on-prem" so maybe not so easy. As an alternative, can you create a simple reproduction case using a public GitLab repository? This way, we can plug ProGet into it, attach a debugger, and figure out what's going on. The most likely scenario is that GitLab doing something wrong/weird against the spec, but it just happens to work in Visual Studio. That was the sitaution of GitHub. Thanks, Alana