Microsoft Dynamics AX 2012 Reporting extensions: Error System.Security.Permissions.SecurityPermission while running report

Sometimes we can see that when running some Reporting Services report (ie: TS_DeliveryPerformanceWebPart.Report we get error

Aditionaly in Microsoft SQL Reporting Services log you can see following error

The issue happens because of not correct entry in file rssrvpolicy.config. To fix the problem.

1. Open rssrvpolicy.config

• If you are using SQL Server 2008, the default location of this file is: \Program Files\Microsoft SQL Server\MSRS10.[SSRSInstanceName]\Reporting Services\ReportServer.
• If you are using SQL Server 2008 R2, the default location of this file is: \Program Files\Microsoft SQL Server\MSRS10_50.[SSRSInstanceName]\Reporting Services\ReportServer.

2. Double check that entries like (all business logic libraries):

<CodeGroup class="UnionCodeGroup" version="1" PermissionSetName="FullTrust" Name="AX_Reports_Strong_Name" Description="This code group grants Dynamics AX Reports code full trust. ">

             <IMembershipCondition class="StrongNameMembershipCondition" version="1" PublicKeyBlob="0024000004800000940000000602000000240000525341310004000001000100B5FC90E7027F67871E773A8FDE8938C81DD402BA65B9201D60593E96C492651E889CC13F1415EBB53FAC1131AE0BD333C5EE6021672D9718E

 A31A8AEBD0DA0072F25D87DBA6FC90FFD598ED4DA35E44C398C454307E8E33B8426143DAEC9F596836F97C8F74750E5975C64E2189F45DEF46B2A2B1247ADC3652BF5C308055DA9" />

          </CodeGroup>

are located under entry

The problem can occur when you used msdn article: http://technet.microsoft.com/en-us/library/hh389762.aspx as the step 7 in section “Modify the report server RsSrvPolicy.config” we should add the mentioned tag in section:

 We are working on changing this article.

You can also open the configuration file from default environment and compare it with the one from changed environment.