The configuration section 'system.web.extensions' cannot be read because it is missing a section declaration : The Official Microsoft IIS Forums

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petervdkerk

The configuration section 'system.web.extensions' cannot be read because it is missing a section ...

Apr 15, 2010 09:13 PM|LINK

My system: I have installed Windows 7, VS2010 and .NET40 and ASPAJAXExtSetup.msi

I used to work with vs2008 and .NET3.5, after installing VS2010 I upgraded to .NET40. I dont think that is the issue here, but it might be something you need to know :)

My problem seems to arise from something within IIS, but I have no idea.

I'm getting the error below.

<div> Error Summary

HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

</div> <div> Detailed Error Information <div id="details-left">

Module	IIS Web Core
Notification	Unknown
Handler	Not yet determined
Error Code	0x80070032
Config Error	The configuration section 'system.web.extensions' cannot be read because it is missing a section declaration
Config File	\\?\C:\inetpub\tickets\web.config

</div> <div id="details-right">

Requested URL	http://www.tickets.com:80/
Physical Path
Logon Method	Not yet determined
Logon User	Not yet determined

</div> </div> <div> Config Source

45:  </connectionStrings>
   46:  <system.web.extensions>
   47:  <scripting>

</div>

My web.config:

<?xml version="1.0"?>
<configuration>
   <connectionStrings>
   </connectionStrings>
   <system.web.extensions>
       <scripting>
           <webServices>
               
               <authenticationService enabled="true" requireSSL="false"/>
           </webServices>
       </scripting>
   </system.web.extensions>
   <system.web>
       <httpHandlers>
           <add path="ChartImg.axd" verb="GET,HEAD" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
       </httpHandlers>
       <compilation debug="true" strict="false" explicit="true" targetFramework="4.0">
           <assemblies>
               <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
               <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
               <add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
               <add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></assemblies></compilation>
       <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID">
           <namespaces>
               <clear/>
               <add namespace="System"/>
               <add namespace="System.Collections"/>
               <add namespace="System.Collections.Specialized"/>
               <add namespace="System.Configuration"/>
               <add namespace="System.Text"/>
               <add namespace="System.Text.RegularExpressions"/>
               <add namespace="System.Web"/>
               <add namespace="System.Web.Caching"/>
               <add namespace="System.Web.SessionState"/>
               <add namespace="System.Web.Security"/>
               <add namespace="System.Web.Profile"/>
               <add namespace="System.Web.UI"/>
               <add namespace="System.Web.UI.WebControls"/>
               <add namespace="System.Web.UI.WebControls.WebParts"/>
               <add namespace="System.Web.UI.HtmlControls"/>
           </namespaces>
           <controls>
               <add tagPrefix="asp" namespace="System.Web.UI.DataVisualization.Charting" assembly="System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
           </controls>
       </pages>
       <sessionState mode="InProc" timeout="60"/>
       <authentication mode="Forms">
           <forms name=".MyCookie" slidingExpiration="true" timeout="60" cookieless="AutoDetect" loginUrl="/login/" protection="All" defaultUrl="/">
               <credentials passwordFormat="SHA1"/>
           </forms>
       </authentication>
       <customErrors mode="Off" defaultRedirect="/contact.aspx">
           <error statusCode="404" redirect="/contact.aspx"/>
       </customErrors>
       <roleManager domain="192.168.0.103" enabled="true" cacheRolesInCookie="true" cookieName=".ASPXROLES" cookieTimeout="60" cookiePath="/" cookieRequireSSL="false" cookieSlidingExpiration="true" cookieProtection="All" defaultProvider="AccessRoleProvider" createPersistentCookie="false" maxCachedResults="25">
           <providers>
               <clear/>
               <add name="AccessRoleProvider" connectionStringName="conn1" applicationName="/tickets" type="Samples.AccessProviders.AccessRoleProvider"/>
           </providers>
       </roleManager>
       <membership defaultProvider="AccessMembershipProvider" userIsOnlineTimeWindow="30">
           <providers>
               <clear/>
               <add name="AccessMembershipProvider" type="Samples.AccessProviders.AccessMembershipProvider" connectionStringName="conn1" requiresQuestionAndAnswer="false" applicationName="/tickets" minRequiredPasswordLength="6" enablePasswordRetrieval="false" enablePasswordReset="true" requiresUniqueEmail="true" minRequiredNonalphanumericCharacters="0" passwordFormat="Hashed"/>
           </providers>
       </membership>
   </system.web>

   <system.webServer>
       <validation validateIntegratedModeConfiguration="false"/>
       <modules runAllManagedModulesForAllRequests="true">
       </modules>
       <handlers>
           <add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD" path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
       </handlers>
       <rewrite>
           <rules>
               <rule name="ordermanagement">
                   <match url="^eventmanager/ordermanagement/([0-9]+)"/>
                   <action type="Rewrite" url="ordermanagement.aspx?eventid={R:1}"/>
               </rule>
           </rules>
       </rewrite>
   </system.webServer>
</configuration>

I then checked out this page: http://mvolo.com/blogs/serverside/archive/2007/12/08/IIS-7.0-Breaking-Changes-ASP.NET-2.0-applications-Integrated-mode.aspx

And now Im trying this:
%windir%\system32\inetsrv\Appcmd migrate config "c:\inetpub\tickets"

But I get the error:
ERROR ( message:Cannot find APP object with identifier "c:\inetpub\tickets"". )
I also tried:
%windir%\system32\inetsrv\Appcmd migrate config "tickets"

But still no luck..
What am I doing wrong?

Reply

petervdkerk

31 Posts

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

Apr 16, 2010 10:48 AM|LINK

I have now done this:
"appcmd list sites"

I then see this:
SITE "Tickets" (id:1,bindings:http/*:80:www.tickets.com,state:Started)

Next I do:
appcmd migrate config "Tickets"

I then get:
ERROR ( message:Cannot find APP object with identifier "Tickets". )

What am I doing wrong?

Reply

Leo Tang - M...

4161 Posts

Microsoft

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

Apr 22, 2010 02:30 AM|LINK

Hi,

This issue not caused by the web.config migration. If you update you application to .Net Framework4.0, but assign this application to an application pool running under .Net Framework3.5 or previous version, you will encounter this error.

You can assign this application to an .Net Framework4.0 application pool in IIS to fix issue. If you have any problem, please update here.

Please mark the replies as answers if they help or unmark if not.
Feedback to us

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Edited by Leo Tang - MSFT on Apr 23, 2010 07:39 AM
Edited by Leo Tang - MSFT on May 12, 2010 12:17 AM

Reply

mdrussell077...

9 Posts

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

May 05, 2010 01:19 PM|LINK

Leo Tang - MSFT

Hi,

This issue not caused by the web.config migration. If you update you application to .Net Framework4.0, but assign this application to an application pool running under .Net Framework3.5 or previous version, you will encounter this error.

You can assign this application to an .Net Framework4.0 application pool in IIS to fix issue. If you have any problem, please update here.

I'm getting this error too, but my app is already running on a 4.0 application pool.

Help?

Reply

Leo Tang - M...

4161 Posts

Microsoft

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

May 06, 2010 07:01 AM|LINK

Hi,

Could you please post your web.config here?

Thanks.

Please mark the replies as answers if they help or unmark if not.
Feedback to us

Develop and promote your apps in Windows Store

Edited by Leo Tang - MSFT on May 06, 2010 07:02 AM

Reply

mdrussell077...

9 Posts

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

May 06, 2010 11:26 AM|LINK

Leo Tang - MSFT

Hi,

Could you please post your web.config here?

Thanks.

It's erroring at:

<system.web.extensions>
       <scripting>
           <scriptResourceHandler enableCompression="true" enableCaching="true"/>
       </scripting>
    </system.web.extensions>

Here's the web.config contents,

<?xml version="1.0"?>
<configuration>
    <appSettings>
    </appSettings>
    <connectionStrings>
    </connectionStrings>
    <system.web>
       <httpRuntime maxRequestLength="8192"/>
       <globalization culture="en-US"/>
       <pages styleSheetTheme="Professional" enableEventValidation="false" controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID">
           <controls>
               <add tagPrefix="ajaxToolkit" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit"/>
               <add tagPrefix="widget" src="~/_widgets/select_user.ascx" tagName="select_user"/>
               <add tagPrefix="BDP" namespace="BasicFrame.WebControls" assembly="BasicFrame.WebControls.BasicDatePicker"/>
           </controls>
       </pages>
       <compilation debug="true" targetFramework="4.0">
           <assemblies>
               <add assembly="CrystalDecisions.CrystalReports.Engine, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
               <add assembly="CrystalDecisions.ReportSource, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
               <add assembly="CrystalDecisions.Shared, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
               <add assembly="CrystalDecisions.Web, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
            </assemblies>
       </compilation>
       <authorization>
           <deny users="?"/>
           <allow users="*"/>
       </authorization>
    </system.web>
    <system.web.extensions>
       <scripting>
           <scriptResourceHandler enableCompression="true" enableCaching="true"/>
       </scripting>
    </system.web.extensions>
</configuration>

Reply

Leo Tang - M...

4161 Posts

Microsoft

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

May 07, 2010 07:52 AM|LINK

Hi,

Please check the machine.config file located in C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config directory. Does the following configuration section declaration exists?

</configProtectedData>

</configuration>

Note: if you intend to manually edit the machine.config file, please remember to backup it firstly.

Please mark the replies as answers if they help or unmark if not.
Feedback to us

Develop and promote your apps in Windows Store

Reply

mdrussell077...

9 Posts

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

May 07, 2010 11:24 AM|LINK

-- double post, oops, see below --

Edited by mdrussell0779 on May 07, 2010 11:25 AM

Reply

mdrussell077...

9 Posts

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

May 07, 2010 11:25 AM|LINK

Leo,

Yeah there's a section for that:

Reply

Bruce L

3 Posts

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

May 11, 2010 11:45 PM|LINK

I am seeing the same problem with one of our IIS 7.0 machine. I am posting a little bit of extra information we found out

1) I am getting the same error when I tried to open any section, eg. asp.net Machine Key, IIS default document.

2) I did a filemon trace and found that IIS manager and the worker process was somehow reading the version 2.0 machine.config even though the worker process is set to 4.0. I did the same filemon trace on another machine and it is reading the 4.0 machine.config.

I think there's something in the registry that tells IIS which config to read.. but I couldn't figure it out.

Bruce

http://www.discountASP.NET

The configuration section 'system.web.extensions' cannot be read because it is missing a section declaration RSS

22 replies

petervdkerk

The configuration section 'system.web.extensions' cannot be read because it is missing a section ...

HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

petervdkerk

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

Leo Tang - M...

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

mdrussell077...

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

Leo Tang - MSFT

Leo Tang - M...

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

mdrussell077...

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

Leo Tang - MSFT

Leo Tang - M...

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

mdrussell077...

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

mdrussell077...

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...

Bruce L

Re: The configuration section 'system.web.extensions' cannot be read because it is missing a sect...