Windows 10: Unable to connect to web server IIS Express in Visual Studio

Discus and support Unable to connect to web server IIS Express in Visual Studio in Windows 10 News to solve the problem; [ATTACH]Visual Studio attempts to launch IIS Express as a child process to host the web application, but the integrated browser or debugger fails to... Discussion in 'Windows 10 News' started by WinClub, Apr 13, 2026 at 11:47 AM.

  1. WINCLUB
    WinClub New Member

    Unable to connect to web server IIS Express in Visual Studio


    Unable to connect to web server IIS Express in Visual Studio web-server-issue-visual-studio.jpg ​
    Visual Studio attempts to launch IIS Express as a child process to host the web application, but the integrated browser or debugger fails to establish a socket connection to the designated localhost port. The IDE subsequently says “Unable to connect to web server IIS Express,” interrupting development workflows in Visual Studio and preventing application debugging. […]

    This article Unable to connect to web server IIS Express in Visual Studio first appeared on TheWindowsClub.com.

    read more...
     
    WinClub, Apr 13, 2026 at 11:47 AM
    #1
  2. ANDRE DA COSTA
    Andre Da Costa Win User

    Download for Microsoft visual studio 2013 express edition

    According to the following page, you can download it at the following link:

    https://www.visualstudio.com/vs/older-downloads/


    You will need to have an account setup:

    To download any product from the following list, click the download button and log in with your Visual Studio Subscription account when prompted. If you don’t have a Visual Studio Subscription, you can create one for free by clicking on “Create a new Microsoft
    account” on the login page.

    Visual Studio Community 2013; Visual Studio Professional 2013; Visual Studio Premium 2013; Visual Studio Ultimate 2013

    Visual Studio Test Professional 2013

    Visual Studio 2013 Language Pack

    Visual Studio Test Professional 2013 Language Pack

    Visual Studio Team Foundation Server 2013

    Visual Studio Team Foundation Server Express 2013

    Team Explorer for Visual Studio 2013

    Visual Studio 2013 Shell (Integrated)

    Visual Studio 2013 SDK

    Visual Studio 2013 Modeling SDK

    Visual Studio 2013 Agents

    Visual Studio Express 2013 for Web

    Visual Studio Express 2013 for Windows

    Visual Studio Express 2013 for Windows Desktop
     
    Andre Da Costa, Apr 13, 2026 at 11:49 AM
    #2
  3. PATRICKHARREN
    PatrickHarren Win User
    Unable to connect to the configured development Web server.

    I am attempting to debug a solution using Visual Studio 17. This has worked properly in the past, the last time I used it was a few weeks ago. No change has been made to the code. Now I get a message: "Unable to connect to the configured development Web
    Server. Output from IIS Express: Failed to register URL "http://localhost:4667/" for site "Working" application "/". Error description: The process cannot access the file because it is being used by another process. (0x80070020)." Task Manager => Resource
    Monitor => Network does not show port 4667. Nor does netstat. Can anyone tell me how to resolve this?
     
    PatrickHarren, Apr 13, 2026 at 11:49 AM
    #3
  4. BRINK
    Brink Win User

    Unable to connect to web server IIS Express in Visual Studio

    Supporting JUnit 5 in Visual Studio Code


    Source: Supporting JUnit 5 in Visual Studio Code | The Visual Studio Blog
     
    Brink, Apr 13, 2026 at 11:49 AM
    #4
Thema:

Unable to connect to web server IIS Express in Visual Studio

Loading...

  1. Unable to connect to web server IIS Express in Visual Studio - Similar Threads - Unable connect web

  2. Visual Studio 2022, IIS Express Error - "The request is not supported"

    in Windows 10 Gaming
    Visual Studio 2022, IIS Express Error - "The request is not supported": I am trying to run a project via Visual Studio 2022 that uses IIS Express, but am unable to get past building the project. I get hit with the following error: "Unable to connect to the configured development web serverOutput from IIS Express:Starting IIS Express...Unable to...

  3. Visual Studio 2022, IIS Express Error - "The request is not supported"

    in Windows 10 Software and Apps
    Visual Studio 2022, IIS Express Error - "The request is not supported": I am trying to run a project via Visual Studio 2022 that uses IIS Express, but am unable to get past building the project. I get hit with the following error: "Unable to connect to the configured development web serverOutput from IIS Express:Starting IIS Express...Unable to...

  4. Visual Studio Express 2013 for Windows desktop installation

    in Windows 10 Gaming
    Visual Studio Express 2013 for Windows desktop installation: HelloI installed Visual Studio Express 2013 for Windows desktop. I got it from the official Microsoft website older versions with a Dev Essential free account. The software was marked as requiring NO PRODUCT KEY. The sofware didn't say it was a trial version.I burnt the DVD...

  5. Visual Studio Express 2013 for Windows desktop installation

    in Windows 10 Software and Apps
    Visual Studio Express 2013 for Windows desktop installation: HelloI installed Visual Studio Express 2013 for Windows desktop. I got it from the official Microsoft website older versions with a Dev Essential free account. The software was marked as requiring NO PRODUCT KEY. The sofware didn't say it was a trial version.I burnt the DVD...

  6. Web Server IIS Role: configuration error

    in Windows 10 Gaming
    Web Server IIS Role: configuration error: Hi There, I was trying to install the SharePoint 2016 in one of my Windows Server 2019. After running the Prerequisiteinstaller application file, it resulted with the "Web Server IIS Role: configuration error". I tried install .Net framework modules but it resulted with an...

  7. Web Server IIS Role: configuration error

    in Windows 10 Software and Apps
    Web Server IIS Role: configuration error: Hi There, I was trying to install the SharePoint 2016 in one of my Windows Server 2019. After running the Prerequisiteinstaller application file, it resulted with the "Web Server IIS Role: configuration error". I tried install .Net framework modules but it resulted with an...

  8. Web Server IIS Role: configuration error

    in Windows 10 Installation and Upgrade
    Web Server IIS Role: configuration error: Hi There, I was trying to install the SharePoint 2016 in one of my Windows Server 2019. After running the Prerequisiteinstaller application file, it resulted with the "Web Server IIS Role: configuration error". I tried install .Net framework modules but it resulted with an...

  9. Running local web app through Visual Studio 2019 on Windows 10 IIS Express causes BSOD due...

    in Windows 10 Drivers and Hardware
    Running local web app through Visual Studio 2019 on Windows 10 IIS Express causes BSOD due...: Analysing dump file !analyze -v using WinDbg shows the below. Have not seen any answers, or official ways of potentially repairing HTTP.SYS. SYSTEM_THREAD_EXCEPTION_NOT_HANDLED 7eThis is a very common BugCheck. Usually the exception address pinpointsthe driver/function that...

  10. bsod's after installation visual studio express

    in Windows 10 BSOD Crashes and Debugging
    bsod's after installation visual studio express: On windows 10 after the installation of visual studio express called community 2015 I got regurarly a bsod when I logged in my sleeping laptop.How is this possible?Because visual studio is a user mode application. my minidump directory is empty: I have the impression the...