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Getting configuration error once try to browse the site inside the default website

I created asp.net application. then I build that on visual studio and then I added web.config file and added following section in that web.config file
<remotingSetting baseRemoteAddress="http://localhost/application_name/{0}"/>
<securitySetting accessDeniedUrl="~/Default.aspx"/>
then I created a site as application_name in Default Website using IIS manager
Then I try to browse this application in IIS manager, I'm getting following configuration error.
Configuration Error
Description: An error occurred during the processing of a
configuration file required to service this request. Please review the
specific error details below and modify your configuration file
appropriately
Parser Error Message: An error occurred loading a configuration file:
Directory 'C:\Users\kelum\Documents\Visual Studio 2015\Projects\Sample_Project\SampleApp\ConfigSetting' does not exist. Failed to start monitoring file changes.
exist. Failed to start monitoring file changes.
Source Error:
[No relevant source lines]
.

The current custom error settings for this application prevent the details of the application error from being viewed remotely

I've deployed the application on Server (HostGator), and on Preview it gives me following error
Server Error in '/' Application. Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the
specific error details below and modify your configuration file
appropriately.
Parser Error Message: This configuration section cannot be used at
this path. This happens when the site administrator has locked access
to this section using from an
inherited configuration file.
Source Error:
An application error occurred on the server. The current custom error
settings for this application prevent the details of the application
error from being viewed remotely (for security reasons). It could,
however, be viewed by browsers running on the local server machine.
Source File:
D:\InetPub\vhosts\accleague.org\admin.accleague.org\web.config
Line: 24
But when same application deployed on another Server, it runs smoothly on 1st try.
Tried every possibility mentioned on internet but unable to resolve the issue.

IIS Error This configuration section cannot be used at this path

I am facing a strange behavior in that I have an application thats hosted on two nodes. works fine on one node, on the other throws up the following error,
Server Error in '/***_Service' Application.
Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: This configuration section cannot be used at this path. This happens when the site administrator has locked access to this section using <location allowOverride="false"> from an inherited configuration file.
Source Error:
Line 34: </context>
Line 35: </spring>
Line 36: <appSettings>
I have compared the applicationHost.config files on both the boxes and they are same. Not facing the problem in Dev environment too. Am I missing something? Can someone please give me some pointers?
Thanks

Can't run uploadify for asp.net

I have downloaded the example code/demo from:
http://www.technowise.in/2009/12/uploadify-aspnet-c-vb-examples-demo.html
and when I try to run any of the aspx files, I just get the following message from the server:
Server Error in '/' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.
Source Error:
Line 46: ASP.NET to identify an incoming user.
Line 47: -->
Line 48: <authentication mode="Windows"/>
Line 49: <!--
Line 50: The <customErrors> section enables configuration
Source File: C:\Inetpub\wwwroot\test_uploader\uploadify\web.config Line: 48
Version Information: Microsoft .NET Framework Version:2.0.50727.3623; ASP.NET Version:2.0.50727.3618
Anyone know why this is happening? I can normally run asp.net 2.0 and above web-forms perfectly will on this server.

You get this error because you have place a web.config in a subdirectory and this contains sessions that should be there, except if you define a new application/pool asp.net in this subdirectory of your iis.
From you question, here is the path of your web.config, but this must be one directory up, or not exist at all, or remove the lines that can not be there.
C:\Inetpub\wwwroot\test_uploader\uploadify\web.config

ASP.net Configuration Error- allowDefinition='MachineToApplication'

I uploaded my webapplication using FTP to a space. I am getting this error. I have created the virtual directory and configured it in IIS.I am getting this error.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.
Source Error:
Line 52: ASP.NET to identify an incoming user.
Line 53: -->
Line 54: <authentication mode="Windows"/>
Line 55:
Line 56: <!--The <customErrors> section enables configuration

You created a virtual directory which is not an application.
In IIS, Right click on it and Convert To Application