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How to fix Error System.Web.HttpApplication does not implement IHttpModule in IIS
Nelson Javier Bahamón Parrado
0
Reputation points
Hi, I need some help with error "Error System.Web.HttpApplication does not implement IHttpModule" with some steps for diagnose cause this error.
Note: MY_SERVER has a single web site called "SitioNuevoVacio2"
Context
I have a web site called "SitioNuevoVacio2" this contains a single html file called "index.html" with following source code
<html>
<body>
-- empty web site --
</body>
</html>
when I browse "SitioNuevoVacio2", I get these error messages:
“
Server Error in '/' Application.
System.Web.HttpApplication does not implement IHttpModule.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Configuration.ConfigurationErrorsException: System.Web.HttpApplication does not implement IHttpModule. Source Error:
|An
unhandled exception was generated during the execution of the current web
request. Information regarding the origin and location of the exception can
be identified using the exception stack trace below.|
| -------- |
|An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.|
Stack Trace:
|[ConfigurationErrorsException:
System.Web.HttpApplication does not implement IHttpModule.]
System.Web.Configuration.Common.ModulesEntry..ctor(String name, String
typeName, String propertyName, ConfigurationElement configElement) +11874417
System.Web.HttpApplication.BuildIntegratedModuleCollection(List1 moduleList) +221 System.Web.HttpApplication.GetModuleCollection(IntPtr appContext) +1103 System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +122 System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +173 System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +255 System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +347 [HttpException (0x80004005): System.Web.HttpApplication does not implement IHttpModule.] System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +552 System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +122 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +732| | -------- | | [ConfigurationErrorsException: System.Web.HttpApplication does not implement IHttpModule.] System.Web.Configuration.Common.ModulesEntry..ctor(String name, String typeName, String propertyName, ConfigurationElement configElement) +11874417 System.Web.HttpApplication.BuildIntegratedModuleCollection(List1 moduleList) +221 System.Web.HttpApplication.GetModuleCollection(IntPtr appContext) +1103 System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +122 System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +173 System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +255 System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +347 [HttpException (0x80004005): System.Web.HttpApplication does not implement IHttpModule.] System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +552 System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +122 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +732|
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.9195.0
”
And Event viewer has this warning:
Event code: 3008
Event message: A configuration error has occurred.
Event time: 9/10/2024 8:56:20 a. m.
Event time (UTC): 9/10/2024 1:56:20 p. m.
Event ID: 5bffbb78122e470a85ffaa557e38532d
Event sequence: 1
Event occurrence: 1
Event detail code: 0
Application information:
Application domain: /LM/W3SVC/3/ROOT-2-133729557801407411
Trust level: Full
Application Virtual Path: /
Application Path: C:\inetpub\wwwroot\SitioNuevoVacio2\
Machine name: PMO-GMP
Process information:
Process ID: 9424
Process name: w3wp.exe
Account name: IIS APPPOOL\DefaultAppPool
Exception information:
Exception type: ConfigurationErrorsException
Exception message: System.Web.HttpApplication does not implement IHttpModule.
at System.Web.Configuration.Common.ModulesEntry..ctor(String name, String typeName, String propertyName, ConfigurationElement configElement)
at System.Web.HttpApplication.BuildIntegratedModuleCollection(List`1 moduleList)
at System.Web.HttpApplication.GetModuleCollection(IntPtr appContext)
at System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers)
at System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context)
at System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context)
at System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext)
Request information:
Request URL: http://localhost:8085/
Request path: /
User host address: ::1
User:
Is authenticated: False
Authentication Type:
Thread account name: PMO-GMP\Admin
Thread information:
Thread ID: 12
Thread account name: PMO-GMP\Admin
Is impersonating: False
Stack trace: at System.Web.Configuration.Common.ModulesEntry..ctor(String name, String typeName, String propertyName, ConfigurationElement configElement)
at System.Web.HttpApplication.BuildIntegratedModuleCollection(List`1 moduleList)
at System.Web.HttpApplication.GetModuleCollection(IntPtr appContext)
at System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers)
at System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context)
at System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context)
at System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext)
......
I searched in the web and some post suggest check your source code in these files:
- web.config
- global.asax
and find any reference to custom HttpModule, but "SitioNuevoVacio2" only has a single page. I don't know what to do, any suggestions?
Technical Specs
- SO: windows server 2022 standard 21H2
- IIS: Version 10.0.20438.1
- .NET Framework Version:4.0.30319
- ASP.NET Version:4.8.9195.0
TRY
- List of 12 Handlers manually created...
1. PageHandlerFactory-ISAPI-4.0_32bit
- Request path: *.aspx
- Type: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Name: PageHandlerFactory-ISAPI-4.0_32bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
2. PageHandlerFactory-ISAPI-4.0_64bit
- Request path: *.aspx
- Type: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Name: PageHandlerFactory-ISAPI-4.0_64bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
3. PageHandlerFactory-Integrated-4.0
- Request path: *.aspx
- Type: System.Web.UI.PageHandlerFactory
- Name: PageHandlerFactory-Integrated-4.0
- Module: ManagedPipelineHandler
- Entry Type: Local
4. SimpleHandlerFactory-ISAPI-4.0_32bit
- Request path: *.ashx
- Type: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Name: SimpleHandlerFactory-ISAPI-4.0_32bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
5. SimpleHandlerFactory-ISAPI-4.0_64bit
- Request path: *.ashx
- Type: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Name: SimpleHandlerFactory-ISAPI-4.0_64bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
6. SimpleHandlerFactory-Integrated-4.0
- Request path: *.ashx
- Type: System.Web.UI.SimpleHandlerFactory
- Name: SimpleHandlerFactory-Integrated-4.0
- Module: ManagedPipelineHandler
- Entry Type: Local
7. WebServiceHandlerFactory-ISAPI-4.0_32bit
- Request path: *.asmx
- Type: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Name: WebServiceHandlerFactory-ISAPI-4.0_32bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
8. WebServiceHandlerFactory-ISAPI-4.0_64bit
- Request path: *.asmx
- Type: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Name: WebServiceHandlerFactory-ISAPI-4.0_64bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
9. WebServiceHandlerFactory-Integrated-4.0
- Request path: *.asmx
- Type: System.Web.Services.Protocols.WebServiceHandlerFactory
- Name: WebServiceHandlerFactory-Integrated-4.0
- Module: ManagedPipelineHandler
- Entry Type: Local
10. ScriptHandlerFactory-ISAPI-4.0_32bit
- Request path: *.axd
- Type: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Name: ScriptHandlerFactory-ISAPI-4.0_32bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
11. ScriptHandlerFactory-ISAPI-4.0_64bit
- Request path: *.axd
- Type: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Name: ScriptHandlerFactory-ISAPI-4.0_64bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
12. ScriptHandlerFactory-Integrated-4.0
- Request path: *.axd
- Type: System.Web.Handlers.ScriptHandlerFactory
- Name: ScriptHandlerFactory-Integrated-4.0
- Module: ManagedPipelineHandler
Entry Type: Local
1. PageHandlerFactory-ISAPI-4.0_32bit
- Request path: *.aspx
- Type: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Name: PageHandlerFactory-ISAPI-4.0_32bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
2. PageHandlerFactory-ISAPI-4.0_64bit
- Request path: *.aspx
- Type: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Name: PageHandlerFactory-ISAPI-4.0_64bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
3. PageHandlerFactory-Integrated-4.0
- Request path: *.aspx
- Type: System.Web.UI.PageHandlerFactory
- Name: PageHandlerFactory-Integrated-4.0
- Module: ManagedPipelineHandler
- Entry Type: Local
4. SimpleHandlerFactory-ISAPI-4.0_32bit
- Request path: *.ashx
- Type: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Name: SimpleHandlerFactory-ISAPI-4.0_32bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
5. SimpleHandlerFactory-ISAPI-4.0_64bit
- Request path: *.ashx
- Type: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Name: SimpleHandlerFactory-ISAPI-4.0_64bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
6. SimpleHandlerFactory-Integrated-4.0
- Request path: *.ashx
- Type: System.Web.UI.SimpleHandlerFactory
- Name: SimpleHandlerFactory-Integrated-4.0
- Module: ManagedPipelineHandler
- Entry Type: Local
7. WebServiceHandlerFactory-ISAPI-4.0_32bit
- Request path: *.asmx
- Type: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Name: WebServiceHandlerFactory-ISAPI-4.0_32bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
8. WebServiceHandlerFactory-ISAPI-4.0_64bit
- Request path: *.asmx
- Type: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Name: WebServiceHandlerFactory-ISAPI-4.0_64bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
9. WebServiceHandlerFactory-Integrated-4.0
- Request path: *.asmx
- Type: System.Web.Services.Protocols.WebServiceHandlerFactory
- Name: WebServiceHandlerFactory-Integrated-4.0
- Module: ManagedPipelineHandler
- Entry Type: Local
10. ScriptHandlerFactory-ISAPI-4.0_32bit
- Request path: *.axd
- Type: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Name: ScriptHandlerFactory-ISAPI-4.0_32bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
11. ScriptHandlerFactory-ISAPI-4.0_64bit
- Request path: *.axd
- Type: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Name: ScriptHandlerFactory-ISAPI-4.0_64bit
- Module: IsapiModule
- Script Processor: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll
- Entry Type: Local
12. ScriptHandlerFactory-Integrated-4.0
- Request path: *.axd
- Type: System.Web.Handlers.ScriptHandlerFactory
- Name: ScriptHandlerFactory-Integrated-4.0
- Module: ManagedPipelineHandler
- Entry Type: Local
- Check, download, install, update and reboot last windows updates.
- Compare Handlers and Modules between IIS developer server with MY_SERVER
note: IIS developer server works fine when I publish "SitioNuevoVacio2"
EXPECT
After made those verifications and changes IIS works fine and see index.html "SitioNuevoVacio2"
{count} votes
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XuDong Peng-MSFT 10,511 Reputation points Microsoft Vendor2024-10-10T03:32:04.3333333+00:00 Hi @Nelson Javier Bahamón Parrado,
I think this still needs some information to locate the problem, please check the Application pool mode, is it classic or integrated? In addition, can you provide the configuration section of
<system.webServer><modules>...</modules></system.webServer>? Or did you implement any custom modules in your code?
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