Specified argument was out of the range of valid values. Parameter name: site

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I am getting this Kind of Error like::

Specified argument was out of the range of valid values.Parameter name: site

while Debugging any of my Project.

I have also tried after Reinstalling My Visual Studio 2012. But again the same kind of problem I am getting while Debugging.

My System's Configurations are :

  • Windows 8 : 32-bit
  • Visual Studio : 2012

Exception is thrown at the time of Showing Web Page Like,

[ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: site]
   System.Web.HttpRuntime.HostingInit(HostingEnvironmentFlags hostingFlags, PolicyLevel policyLevel, Exception appDomainCreationException) +298

[HttpException (0x80004005): Specified argument was out of the range of valid values.
Parameter name: site]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9873912
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +101
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +254
c#
visual-studio
iis
web-config
asked on Stack Overflow Jul 21, 2013 by Rahul_RJ • edited Mar 31, 2015 by Adam

12 Answers

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If using IIS:

  • control panel
  • Programs
  • open or close windows features
  • tick internet information services
  • then restart your visual studio

If using IIS Express:

Open 'Add/Remove Programs' from the old control panel and run a repair on IIS Express Or you might go Control Panel ->> Programs ->> Programs and Features ->> Turn Windows features on or off ->> Internet Information Services and check the checkbox as shown in the picture below:

enter image description here

answered on Stack Overflow Aug 21, 2013 by MustafaP • edited Jan 16, 2018 by Adil B
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This occurred to me when I applied the 2017 Fall Creator Update. I was able to resolve by repairing IIS 10.0 Express (I do not have IIS installed on my box.)

Note: As a user pointed out in the comments,

Repair can be found in "Programs and Features" - the "classic" control panel.

answered on Stack Overflow Oct 19, 2017 by Rich T • edited Dec 29, 2017 by Community
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I had the same issue i resolved it by repairing the iis server in programs and features.

GO TO

Controll panel > uninstall a program and then right click the installed iis express server (installed with Visual Studio) and then click repair.

this is how i solved this issue

answered on Stack Overflow Jan 12, 2016 by tanveer ahmad dar
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I had the same issue with VS2017. Following solved the issue.

  1. Run Command prompt as Administrator.
  2. Write following two commands which will update your registry.

reg add HKLM\Software\WOW6432Node\Microsoft\InetStp /v MajorVersion /t REG_DWORD /d 10 /f

reg add HKLM\Software\Microsoft\InetStp /v MajorVersion /t REG_DWORD /d 10 /f

This should solve your problem. Refer to this link for more details.

answered on Stack Overflow Nov 10, 2017 by Sikandar Amla
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Instead of installing the bloated IIS, I get mine resolved by installing Internet Information Services Hostable Web Core from the Windows Features

answered on Stack Overflow Nov 12, 2014 by Johan Bakar
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When you start with a Specific Page while debugging your project, and you are using Local IIS, you might have filled a wrong value in the Specific Page textbox.

(via Project Properties > Web > Start Action > Specific Page)

Wrong configuration:

Specific Page: "http://localhost/MyApplication/Start/SpecificPage.aspx"
Project Url: "http://localhost/MyApplication"

Right configuration:

Specific Page: "/Start/SpecificPage.aspx"
Project Url: "http://localhost/MyApplication"

Note: Ignore the quotation marks.

answered on Stack Overflow Jan 16, 2014 by Wesley
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If you are okay with using the built in Visual Studio Development server or you don't want to or cannot install IIS, you can change the web server the project uses by going into

  1. Project Properties (right click project in solution explorer and select properties)

  2. select Web tab

  3. select "Use Visual Studio Development Server".

I don't know how it happened to me, but somehow this option was changed to "Use Local IIS Web Server" for one of my projects.

answered on Stack Overflow Dec 7, 2015 by attila
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This resolved the issue on Windows 10 after the last update

go Control Panel ->> Programs ->> Programs and Features ->> Turn Windows features on or off ->> Internet Information Services

But based on previous response it doesn't work unless checking all these options as on pic below

enter image description here

answered on Stack Overflow Jan 28, 2018 by Aymen Boumaiza
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For me, it was happening because I had switched over to "Run as Administrator". Just one instance of VS was running, but running it as admin threw this error. Switching back fixed me right up.

answered on Stack Overflow Apr 18, 2016 by Michael K
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Modify was greyed out for me, but adding the IIS Management Console under programs and features fixed this for me. Also on Windows 10 fall update.

answered on Stack Overflow Dec 4, 2017 by Don
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I got this issue when trying to run a project targeting Framework 4.5 in VS2017. After changing it to Framework 4.6.X it got fixed by itself.

answered on Stack Overflow Dec 30, 2017 by Illuminati
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  • Navigate to Control Panel > Programs > Programs and Features and repair the IIS Express.
  • Restart the visual studio.

To turn on the IIS is not recommended as other comments suggests if you are not using your system as a live server. For development purpose only IIS Express is adequate.

answered on Stack Overflow Jul 16, 2019 by Ashish Dehariya

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