Solution for HTTP Error 500.19 - Internal Server Error

-
Error Message:

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:\inetpub\wwwroot\web.config

Requested URL http://localhost:8081/

Physical Path C:\inetpub\wwwroot\

Logon Method Not yet determined

Logon User Not yet determined

Config Source

144: </modules>

145: <handlers>

146: <remove name="WebServiceHandlerFactory-Integrated"/>

Reason:

ERROR CODE: 0x80070021 is

ERROR_LOCK_VIOLATION The process cannot access the file because another process has locked a portion of the file.

Solution:

There are usually a few more lines in that error response that points to the exact line in the config file (and hence the locked section) that has the problem. You will either have to unlock that section or not use it in your application’s web.config file.

For e.g., one can lock/unlock handlers/modules sections by either

Ø use appcmd.exe

%windir%\system32\inetsrv\appcmd unlock config -section:system.webServer/handlers

%windir%\system32\inetsrv\appcmd unlock config -section:system.webServer/modules

OR

Ø manually change value from "Deny" to "Allow" for below settings in %windir%\system32\inetsrv\config\ applicationHost.config

<section name="handlers" overrideModeDefault="Deny" />

<section name="modules" allowDefinition="MachineToApplication" overrideModeDefault="Deny"/>

You can also configure the locking via IIS manager UI.

For more details refer: Locking in IIS 7.0 Configuration

In above error message, the error occurred on the handlers section at:

<remove name="WebServiceHandlerFactory-Integrated"/>”

This usually indicates that ASP.NET is either not installed or has corrupted/incomplete installation because installation of asp.net unlocks that section. Hence if this is the case, one should install asp.net feature from Server Manager (Under Web Server Role in Windows Server 2008 and in Program Features-> Application server in Vista/Windows7). This KB929772 talks about the ASP.NET installation failure reason.

Comments

Post a Comment

Popular posts from this blog

Implement Logging in CSV file using Nlog in .net core MVC application- part 2

-
Image
In previous article " Implement Nlog in .Net core MVC application part 1 "  I have demonstrated how we can implement basic setup of NLog in .core mvc application. In previous article we have logged the exceptions in flat file system. In this article I will show you how you can write the exception and custom logs in csv file. Writing logs in csv file can enable us better readability of logs in tabular form.       Lets start the implementation of it, I going to use the same example project used in previous demonstration. Modify the Nlog.config file as follows, added new target and rule for logging logs in csv file. <?xml version="1.0" encoding="utf-8" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd" autoReload="true" throwExceptions="fal...
Read more

Implement Nlog in .Net core MVC application part 1

-
Image
Logging is a very important part of the enterprise application/web application. Setting up the logging correctly not only beneficial for long term maintenance of the application but also it is useful tool to find out the RCA in case of mission critical bug arises. Therefor we will going to discuss the various logging technique implementation using Nlog library package. In this article we will going to use .net core application for demonstration but you can implement it in .net framework application also. So lets start the implementation of Nlog in .net core MVC application. Open visual studio 2019/17 and create the new project as shown below.     Select Asp.net core Web App (Model-View-Controller) and provide the project name in project name text box.   Now on next screen click on create button this will create MVC app with .net core Now go to solution explorer and right click on project and click on Manage Nuget Package. Now in Nuget package manager install below listed ...
Read more

Angular User Session Timeout example step by step

-
Image
This functionality let the user know that their session is about to expire and that they would be logged out if they didn’t take action. I have written this functionality in Angular for my latest application.  If you are new to Angular 6 then read my article about Setting up Angular 6 step by step before jump to this article to get handy in Angular 6. Dealing with timers in Angular can be significantly different when using React components and subscriptions. The basic premises remains the same, though. We’ll have a service with a timer that will provide a Subject to which consumers of the service can subscribe. A React Subject provides an easy mechanism to trigger a “next” subscription to alert consumers that the timer has expired.   import { Injectable } from '@angular/core'; import { Observable, Subject, Subscription, BehaviorSubject} from 'rxjs/Rx'; @Injectable() export class IdleTimeoutService { private _count: number = 0; ...
Read more

Restore the lost focus of Auto post back controls in asp.net update Panel control

-
Problem: We put  autopostback controls like textbox, DropDownList controls inside in update panel to reducing the flickering of the Page.but when user uses tab for entering the details  the focus of the control losts. Web site users who prefer to use keyboard need to use mouse to activate appropriate input box or press TAB multiple times. Solution: Step 1: Save following in js file give any name to it (like MyUpdatePanelFocus.js ) var lastFocusedControlId = ""; function focusHandler(e) { document.activeElement = e.originalTarget; } function appInit() { if (typeof (window.addEventListener) !== "undefined") { window.addEventListener("focus", focusHandler, true); } Sys.WebForms.PageRequestManager.getInstance().add_pageLoading(pageLoadingHandler); Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(pageLoadedHandler); } function pageLoadingHandler(sender, args) { lastFocusedControlId = typeof (document.acti...
Read more

Disable backspace key using Jquery

-
Disable backspace key in HTML form using Jquery in simple steps. While user enters data into application if user accidentally  press backspace button then it will redirect to previous page and all entered data would be lost. to eliminate this event we can disable the backspace key using Jquery. Following is the JQuery script tag you can add to the web page $(document).keydown(function (e) { var nodeName = e.target.nodeName.toLowerCase(); if (e.which === 8) { if ((nodeName === 'input' && e.target.type === 'text') || nodeName === 'textarea') { // do nothing } else { e.preventDefault(); } } }); The above code can be used seamlessly with any web technology you are using. Hope this will help you in your web application. Happy coding:)
Read more