When I try to run (debug) functions in Visual Studio 2017 on one of our machines, the following dialog pops up!

[![enter image description here](https://i.stack.imgur.com/791UG.png)](https://i.stack.imgur.com/791UG.png)

The target framework for the project is `<TargetFramework>net461</TargetFramework>`. For some reasons I am not able to install .NET 4.7.1 and now I am completely lost. I am sure it was functioning in the past on the same machine. Probably one of the updates caused it. 

Any idea how to resolve it?