No connection could be made because the target machine actively refused it 127.0.0.1

Question

I try to connect to a web service hosted on a different server using the WebRequest Class. The web service returns a string as a Response. While doing so I get an Error:

Answer 1

Delete Temp files by run > %temp%

And Open VS2015 by run as admin,

it works for me.

Answer 2

If you have this while Fiddler is running -> in Fiddler, go to 'Rules' and disable 'Automatically Authenticate' and it should work again.

Answer 3

The exception message says you're trying to connect to the same host (127.0.0.1), while you're stating that your server is running on a different host. Besides the obvious bugs like having "localhost" in the url, or maybe some you might want to check your DNS settings.

Answer 4

I had the same issue with a site which previously was running fine. I resolved the issue by deleting the temporary files from C:\WINDOWS\Microsoft.NET\Framework\v#.#.#####\Temporary ASP.NET Files\@projectName\###CC##C\###C#CC

Answer 5

There is a firewall blocking the connection or the process that is hosting the service is not listening on that port. Or it is listening on a different port.