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Asp.net:System.Security.SecurityException

Thanks for any help. I deployed my application to the server and I get the following error when trying to access a website. It was 2 hours of research and no luck. Exceptional Information:

Security exception

Description: The application attempted to perform an operation not permitted by the security policy. To grant this application the required permissions, contact your system administrator or change the application trust level in the configuration file.

Exception Details: System.Security.SecurityException: A permission request of type "System.Web.AspNetHostingPermission, System, Version = 2.0.0.0, Culture = neutral, PublicKeyToken = b77a5c561934e089" failed.

Source Error:

An unhandled exception was thrown during the execution of the current web request. Information about 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

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

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Source: https://habr.com/ru/post/1395365/

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