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Editorial Team
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Asked: 2026-05-29T09:28:04+00:00

Thanks for any help offered. I deployed my application in server and I am

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Thanks for any help offered. I deployed my application in server and I am getting following error while trying to access the website. Its been 2 hrs of research and stil no luck. Exception details area as follows

Security Exception

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 Details: System.Security.SecurityException: Request for the permission of type ‘System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’ failed.

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.

Stack Trace:

[SecurityException: Request for the permission of type 'System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
   System.Reflection.Assembly._GetType(String name, Boolean throwOnError, Boolean ignoreCase) +0
   System.Reflection.Assembly.GetType(String name, Boolean throwOnError) +36
   System.Web.Compilation.BuildResultCompiledType.GetPreservedAttributes(PreservationFileReader pfr) +54
   System.Web.Compilation.PreservationFileReader.ReadFileInternal(VirtualPath virtualPath, String preservationFile, Int64 hashCode) +496
   System.Web.Compilation.PreservationFileReader.ReadBuildResultFromFile(VirtualPath virtualPath, String preservationFile, Int64 hashCode) +91
   System.Web.Compilation.DiskBuildResultCache.GetBuildResult(String cacheKey, VirtualPath virtualPath, Int64 hashCode) +66
   System.Web.Compilation.BuildManager.GetBuildResultFromCacheInternal(String cacheKey, Boolean keyFromVPP, VirtualPath virtualPath, Int64 hashCode) +176
   System.Web.Compilation.ApplicationBuildProvider.GetGlobalAsaxBuildResult(Boolean isPrecompiledApp) +65
   System.Web.Compilation.BuildManager.CompileGlobalAsax() +51
   System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +337
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1 Answer

  1. Editorial Team

    If you are using IIS 7, follow the instructions in http://technet.microsoft.com/en-us/library/cc753658(v=ws.10).aspx to set the app in the appropriate trust level.

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