Change Localhost Port Visual Studio 2017. There in the App URL TextBox, change the Port Number as shown below
There in the App URL TextBox, change the Port Number as shown below. csproj for one of the project, every time I switch over to the SSL/https URL again, the http URL/port defaults to 51063 (as can be viewed in the “Project properties”-window under “Development Server”) and Nov 23, 2025 · Fix Bad Request Invalid Hostname As a . Mar 25, 2022 · Tired of 'port is already in use' problems when running your site locally with IIS Express? This is how you fix it in Visual Studio. Jun 12, 2017 · How to change debug port in Visual Studio 2017? I checked the property pages but to no avail. Dec 16, 2025 · Learn how to require HTTPS/TLS in an ASP. , https://localhost:5001) works perfectly. NET Development Server to run a file-system Web site, by default, the Web server is invoked on a randomly selected port for localhost. 2. aspx, when you run the page on the ASP. NET Development Server, the URL of the page might be the following: Dec 11, 2025 · Few things disrupt a developer’s workflow like unexpected port changes. NET Core web app. On the Web tab find the Project Url section. g. Launch VS Code Quick Open (Ctrl+P), paste the following command, and press enter. In the Properties window, navigate to the Debug Tab and scroll down to the Web Server Settings section. This frustration is common when working with tools like Visual Studio (VS) and Docker, which sometimes default to dynamic or auto-assigned Even though both projects are setup to use SSL and ports 44301 and 44303, and I have tried to change the port 51063 to 51303 in . 3. vs/config/applicationhost. When running a local web service, you can use the Ports view to make the service accessible to others over the internet. Feb 9, 2023 · You should try to change Port in Project Url for IIS Express in {Project File}->Properties -> Right click to Project File ( example with ShopMobile here) then choose Properties At Project Url in Web tab , try to change Port to another Port ( can increase by 1 )then click "Create Virtual Direction" then Ctrl + S. . To fix it, I had to update the application path (within the Visual Studio 17 folder) of the project within . Oct 3, 2017 · Visual Studio 2017 stores ASP. NET Core server settings (for both IIS Express and Kestrel) in this file. It should say something like https://localhost:44348/ Simply modify it to your desired port number and save. Port forwarding allows you to expose a locally hosted se Dec 16, 2025 · Explore a reference about projects created in current and earlier versions of Visual Studio and find information about porting, migrating, and upgrading projects. Done! Sep 29, 2015 · Visual Studio 2015 / IISExpress change SSL port Asked 10 years, 3 months ago Modified 4 years, 1 month ago Viewed 41k times Jan 6, 2015 · Look for the entry corresponding to the web application we want to modify and change its binding element in the following way: <binding protocol="http"bindingInformation="*:<port>:*" /> All we need to do there is to replace a couple of localhost with *, leaving the automatically assigned <port> as it is. To be clear, I messed up, not Visual Studio. In this tutorial, learn how to set up port forwarding for localhost in Visual Studio Code (VS Code). __OG_DESCRIPTION__ Even though both projects are setup to use SSL and ports 44301 and 44303, and I have tried to change the port 51063 to 51303 in . config, under the <sites> declaration. Support for port forwarding is built into Visual Studio Code via Microsoft dev tunnels, no extension required. Imagine debugging an API, sharing a local URL with a teammate, or running integration tests—only to find the host port has randomly shifted, breaking links, tests, or deployments. For example, if you are testing a page called MyPage. Apr 2, 2020 · Hi, 1. If it's ignored by source control, it will be regenerated on each machine with a random port. When you use the ASP. Nov 23, 2025 · Fix Bad Request Invalid Hostname As a . Right-click on your project file, then choose Properties. Right Click your Project in the Solution Explorer and click on Properties option in the Context menu. csproj for one of the project, every time I switch over to the SSL/https URL again, the http URL/port defaults to 51063 (as can be viewed in the “Project properties”-window under “Development Server”) and I've come across several questions over the past few months with developers asking questions regarding the port values that are used when running applications through Visual Studio, primarily where are the values coming from and how to set them. I've tried deleting and recreating the certificate using advice listed here: Re-Installing Visual Studio 2017 Localhost Certificate, as well as reinstalling VS entirely, but neither worked. Jun 2, 2021 · At this point, when running the web app, I get a ERR_CONNECTION_RESET and can't connect to anything.