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FIX: How to resolve Security Exception (ASP.NET)?

Author: Anand Narayanaswamy MVP

SUMMARY

This article will show you how to fix the security exception which occurs when you attempt to deploy an ASP.NET application such as forums, blogs etc.

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SYMPTOMS

Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application’s trust level in the configuration file.
 
Exception: System.Security.SecurityException: Request Failed

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CAUSE

The above error occurs since the domain is not placed under its own application pool on the IIS and also due to lack of proper trust level in the machine.config file on the server.

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RESOLUTION

(1) Create an application pool for the appropriate domain using Internet Information Services (IIS). Login to the remote desktop and open IIS Manager. Expand the tree Application Pools. Right click and select New | Application Pool and give the required particulars.
 
(2) The next step is to place the domain under the newly created application pool. In order to perform this action, expand the tree labeled Web Sites and then Default Web Site under it. Select your domain name, right click on it and choose Properties menu item. Select the drop down box labeled Application pool and choose the newly created application pool name.
 
Note: You can automatically perform the above mentioned steps using certain popular hosting control panels if you have installed them on the server.

(3) Add the following lines of code to machine.config file. This file can be located under the folder - Root Drive Name:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\CONFIG
 

<location path="yourdomain.com" allowOverride="true">
   <system.web>
     <trust level="Full" originUrl=""/>
   </system.web>
</location>

 
(A) You should require administrative rights to the server and access to remote desktop to resolve the above issue. You should contact your hosting service provider if you don’t have access to the server.
 
(B) Replace yourdomain.com with the appropriate domain name in which the problem is occurring.
 
Warning: Incorrect modification of machine.config file will cause problems to the ASP.NET service on the server.

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Keywords: kbpubmvp, kbpubtypecca, kbhowto, KB555466

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Article Info
Article ID : 555466
Revision : 4
Created on : 6/10/2019
Published on : 6/10/2019
Exists online : False
Views : 1123