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

Question

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

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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       Project Properties  right click project in solution explorer and select properties      select Web tab      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

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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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

I had the same issue with VS2017  Following solved the issue    Run Command prompt as Administrator  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

User · Answer

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

User · Answer

Instead of installing the bloated IIS  I get mine resolved by installing Internet Information Services Hostable Web Core from the Windows Features

[c#] Specified argument was out of the range of valid values. Parameter name: site

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