How to: Specify a Port for the ASP.NET Development Server
Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here. ArchiveDisclaimer

How to: Specify a Port for the ASP.NET Development Server

When you use the ASP.NET Development Server to run a file-system Web site, by default, the Web server is invoked on a randomly selected port for localhost. For example, if you are testing a page called MyPage.aspx, when you run the page on the ASP.NET Development Server, the URL of the page might be the following:


If you want to run the ASP.NET Development Server on a specific port, you can configure the server to do so.


Visual Web Developer cannot guarantee that the port you specify will be available when you run your file-system Web site. If the port is in use when you run a page, Visual Web Developer displays an error message.

To specify a port for the ASP.NET Development Server

  1. In Solution Explorer, click the name of the application.

  2. In the Properties pane, click the down-arrow beside Use dynamic ports and select False from the dropdown list.

    This will enable editing of the Port number property.

  3. In the Properties pane, click the text box beside Port number and type in a port number.

  4. Click outside of the Properties pane. This saves the property settings.

    Each time you run a file-system Web site within Visual Web Developer, the ASP.NET Development Server will listen on the specified port.

See Also

© 2015 Microsoft