Unable To Launch Web Server

Question

I have asp.net web application project in visual studio 2012. When I want to start it, I have the following error:

Unable to launch the IIS Express Web server: P

Answer 1

Remove your extra bindings from the config file.

run command prompt as an administrator and type.

1 . netsh http show urlacl

you will see a list of url that has been used, make sure the one you are trying to use currently is listed in this. in the next step you have to delete this reservation.

2 . netsh http delete urlacl url=/Your complete URL as listed in the list above/

after the acknowledgement, restart IIS

Answer 2

Please remove your project .vs folder and applicationhost.config file and then run your code.

Answer 3

Run "netstat -b" from the command prompt to see what application is using port 4012. If you kill the process IIS Express will be able to launch using port 4012.