The current problem encountered is: unable to download the test controller, I have downloaded a VS2015 Agent when it starts, and it prompts me to download the test controller. I cannot find a valid test controller address.
According to Microsoft download address: https://www.microsoft.com/zh-cn/download/404Error.aspx error: 404

Excuse me: Where should I go to find the test controller corresponding to VS2015

Welcome to Microsoft Q&A!

For test scenarios using Visual Studio 2015 and Visual Studio Team Services (VSTS) or Team Foundation Server (TFS) 2015, you won't need a test controller because Agents for Microsoft Visual Studio 2015 handle orchestration by communicating with VSTS or TFS 2015.

You can refer to this document .

You can download Agents for Microsoft Visual Studio 2015 in this link.

Sincerely,
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My current overall process is: there is a Team Foundation Server (TFS) 2015 server, the TFS2015 server is installed on WinServer2012R2, I created a team project on the TFS server, and what I want to do is to compile the project on the TFS server to generate *test. dll, and then copy the generated DLL to another test server (I have implemented these). When I copy the test file to another test server, how can I run the test DLL? I currently add a generation step : Visual Studio Agent deployment, I found through the Agent log, the log showed that I downloaded a VS2015 agent, I put the agent (Test Agent) on the test server after installation, when I started, it prompted me to need an agent controller, this Is my current problem