Build Failure. Error: 'path' cannot be an empty string (“”) or start with the null character

Question

I have a solution that builds fine in VS2015. I just installed VS2017 RTM and after conversion, attempts to build the solution fail immediately with the error:

Answer 1

These solutions didn't work for me, but I found .vs\config\applicationhost.config and it had

I added the folder to which I would deploy the project, and it built. (or would have if I didn't have compiler errors :)