HTTP Error 500.19 in IIS 10 and Visual Studio 2017

user_3654571 0
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I know that similar questions have been asked but their answer are not solving my problem.

HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.
Detailed Error Information: Module IIS Web Core Notification BeginRequest Handler Not yet determined Error Code 0x80070021 Config Error This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false".

Config File \?\C:\mySite\web.config

Requested URL http://localhost:80/mySite/login

Physical Path C:\mySite\login

Logon Method Not yet determined

Logon User Not yet determined

Config Source:

65: </staticContent>

66: <handlers>

67: 

<add name="ReportViewerWebControlHandler"
    > preCondition="integratedMode" verb="*"
    > path="Reserved.ReportViewerWebControl.axd"
    > type="Microsoft.Reporting.WebForms.HttpHandler,
    > Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral,
    > PublicKeyToken=b03f5f7f11d50a3a" />

I checked in Windows features also and they look alright.

I've tried to set overrideModelDefault to Allow and to remove WebServiceHandlerFactory from applicationhost.congif but no result.

I'm using Visual Studio 2017 and IIS 10.

Any other ideas how to solve this?

iis-10 asp.net-core iis asp.net
10 Answers

For me, the problem was a redirection rule in web.config.

Solved by removing the entire <rewrite>-tag in web.config:

<system.webServer>
...
...
<rewrite>
      <rules>
        <rule name="http to https" enabled="true" stopProcessing="true">
          <match url="(.*)"/>
          <conditions>
            <add input="{HTTPS}" pattern="^OFF$"/>
          </conditions>
          <action type="Redirect" url="https://{HTTP_HOST}/{R:1}" redirectType="Permanent" appendQueryString="true"/>
        </rule>
      </rules>
    </rewrite>
 </system.webServer>
user_5607840

It's no problem in web.config file.

After installation windows, 
IIS does not know how to support .NET Core 2.0 website (or Core 1.0 also) by default

You must to install the .NET Core Windows Server Hosting bundle on the hosting system.

user_16286510
user_39547040

I suddenly started getting this error out of blue when launching debug of ASP.NET project in IIS Express from VisualStudio. While (re)examining the file .vs\config\applicationhost.config I noticed the following suspicious line:

<virtualDirectory path="/" physicalPath="C:\Users\me\OneDrive\Documents\My Web Sites\project.Web-Site2" />

I would never consciously use OneDrive for anything related to development. But our IT is in the process of adopting OneDrive organization wide. So they probably changed some settings of my profile that caused VisualStudio to update IIS Express config with that path. And "My Web Sites" directory did not exist there. So after I updated the line as following:

<virtualDirectory path="/" physicalPath="C:\inetpub\www" />

and created the directory empty C:\inetpub\www, everything started to work again.

Hope this story may save someone few wasted troubleshooting hours.

user_91941370

I faced this problem. For me putting the connection string after configSections which contained the entityframework section, solved the problem.

user_26270570
user_30808580

I had used the wrong framework. I had chosen .NET 3.5 in my project properties. After changing that to .NET 4 the problem was gone. .NET 4 is the only framework that can be chosen in my IIS 10 version.

user_119413290

This could be a Web.config file sharing problem. Check if the wwwroot folder is shared, and also check the folder which contains publish/build inside.

user_143254720

Make sure to install the appropriate Hosting Bundle after enabling IIS

In my case:

  1. Installed Hosting Bundle
  2. Enabled IIS

and got this unhappy message:

HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid

Reinstalling Hosting Bundle solved the problem

user_176129950
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