I have problem while running asp.net core mvc project in iis express

Question

I have Updated some concepts in my old project. Now the updated project is working properly. But my older project shows the error "This localhost page can't be found HTTP ERROR 404". I have tried to clear Visual studio cache by using MEF component. but it's not work. How to solve it?

Answer 1

On a single machine, each port can only be served by one process at a time. If you want to do this simultaneously, you need to use different ports.

So eg https://site/ and https://site:444/ should work: one process can use the default port = 443 and the other 444 .

Or if you use http instead of https , then the default port will be 80 .