How to solve “Microsoft Visual Studio (VS)” error “Unable to connect to the configured development Web server”

Question

PROBLEM

If you start using \"Microsoft Internet Information Services Express (IIS)\" from \"Microsoft Visual Studio (VS)\" you may get when you run

Answer 1

I fixed the problem with deleting .vs folder on project folder.

• Close VS projects.
• Delete .vs folder on project folder that includes applicationhost.config file.

VS will generate new config for this project.