While adding a TFS server to VS2017 Error: "Server already exists in the list below"

Question

While trying to add a TFS server to VS 2017, I encountered an issue where it claims that the server already exists in the list. However, it does not.

The only thing that I can think of that could cause it to think that the server is in the list, is that the two servers used to be one. This was not an issue with VS 2015.

The TFS servers are both 2015 update 3.

Please feel free to ask for any more info.

Answer 1

Give a try with directly using IP address instead of server name when you are adding Team Foundation Sever in VS2017. Something like:

http://192.168.0.1:8080/tfs

---

Update

You could find your Team Foundation Server 2015 GUID Info in below location:

 C:\Program Files\Microsoft Team Foundation Server 14.0\Application Tier\Web Services\web.config

There should be a value like

Then you could compare the GUID of two servers, change one of them and re-register db. More details about it take a look at this blog: How to find Team Foundation Server(TFS) GUID Info