How to solve Microsoft Visual Studio VS error Unable to connect to the configured development Web server

Question

PROBLEM  If you start using  Microsoft Internet Information Services Express  IIS   from  Microsoft Visual Studio  VS   you may get when you run Build this error message   Unable to connect to the configured development Web server   Failed to register URL  http    ip addr   port    for site   project name   application      Error description  Access is denied   0x80070005   What kind of rights is it

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This happened to me on Windows 7 and VS  2013 while viewing a project on the browser after build  I only had to close the browser  Chrome  then made sure that the port is not in use in my Network Activities using some utility then tried again and worked without any problem

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I solved the error by changing the port for the project   I did the following steps    Right click on the project    Go to properties    Go to Server tab    On tab section  change the project URL for other port  like 8080 or 3000    Good luck

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Worked for me in VS2003 and VS2017 on Windows 8   Run the command in CMD with admin rights  netsh http add iplisten ipaddress    Then go to regedit path  HKEY LOCAL MACHINE SYSTEM CurrentControlSet Services HTTP Parameters  and check if the value has been added     For more details check https   www c-sharpcorner com blogs iis-express-failed-to-register-url-access-is-denied

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Just update Visual Studio  this is the simplest solution that worked for me

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Additionally to Bruno s answer I ended up registering the same port for localhost  Otherwise VS2015 was giving me Access Denied error on server start   netsh http add urlacl url http   localhost  port   user everyone   May be it s because I have binding for localhost in aplicationhost config also

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Visual Studio 2015  Windows 10  project source control was managed in TFS Online   None of this worked form me  issue appeared after a reformat of Windows 10 and subsequent reinstall of VStudio 2015  I mapped projects to the same folder  residual folders and files were still there    Deleting the entire old project  specifically the  VS  and then remapping it fixed everything

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I am using visual studio 2015  Deleting  vs folder in the project folder helped me to fix this  You must close the visual studio first

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If you ve tried many ways and still have this problem  take a look at your firewall settings and make sure it does not block Visual Studio or IIS     This worked for me

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SOLUTION  This means that you are missing the right for using it  Create it with Netsh Commands for Hypertext Transfer Protocol   add urlacl   1  Open  Command Line Interface  CLI   called  Command shell  with Win R write  cmd   2  Open CLI windows like administrator with mouse context menu on opened windows or icon  Run as administrator   3  Insert command to register url  netsh http add urlacl url http    ip addr   port   user everyone   NOTE    For remove you can use  netsh http delete urlacl url http    ip addr   port   If not work restart Microsoft Windows  WIN  and then open project and build again  Sometimes these symptoms may be the same like  Unable to launch the IIS Express Web server

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We solved this problem with deleting  vs folder on project folder and deleting temporary ASP NET files   1  Close the Visual Studio  2  Delete  vs folder on project folder that includes applicationhost config file  3  Delete temporary ASP NET Files located  C  WINDOWS Microsoft NET Framework v4 0 30319 Temporary ASP NET Files root

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Opening Visual Studio as administrator will fix the problem

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I just encountered and resolved this in VS2013 on Windows 7  It is a Web Application Project that doesn t use SSL  But when I examined the Properties Window  F4   SSL was enabled  Setting SSL to false resolved the issue   However  when verifying before posting this answer  turning it back on did not cause a recurrence of the problem  So it might be that anything that writes to that preferences resolves the problem  rather than the details of what was written

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For me I tried a few of the above - run as administrator  check firewall   For me it was the IIS Express configuration   A little bit of a  just get it working  fix without much investigation  but deleting the folder IIS Express is located under   C  Users UserName Documents iisexpress   Not sure what caused the issue for my VS2013 - but I am constantly flipping between VS2013 sites in IIS and IIS Express   NOTE  When I forget to run VS2013 as Administrator  my Local IIS project gets inserted in the IIS Express applicationhost config file  which fails to open the web project   Which is really frustrating

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I fixed the problem with deleting  vs folder on project folder    Close VS projects  Delete  vs folder on project folder that includes applicationhost config file    VS will generate new config for this project

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I solved this by restarting my computer  I m guessing that this port was being occupied by a process that needed to be killed

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Solution 1  If you use a newer version of Visual Studio  you may not have this problem  I m currently using Visual Studio 2015 and it works great   Solution 2  You can solve this problem by changing the project s port number  Because the reason is a port number conflict with some other application   I had the same issue and fixed by doing that  by changing the port number   I had solved this here   Changing project port number in Visual Studio 2013  If you use a different version of Visual Studio  you may also change the port number by project s Properties Window in Solution Explorer

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I solved this just now  in the system tray  bottom right  you can click ion the IIS icon and stop the current site  then it allowed me to run

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I tried almost all the options above  none of them worked for my scenario  Finally I was forced to uninstall IIS Express  re-start the machine  and install the same version again from Microsoft   Anyway thanks for all the suggestions above

[visual-studio] How to solve “Microsoft Visual Studio (VS)” error “Unable to connect to the configured development Web server”

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