Edit C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG\web_lowtrust.config

Edit C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG\web_lowtrust.config

<configuration>
    <mscorlib>
        <security>
            <policy>
                <PolicyLevel version="1">
                    <SecurityClasses>
                        <SecurityClass Name="AllMembershipCondition" Description="System.Security.Policy.AllMembershipCondition, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                        <SecurityClass Name="AspNetHostingPermission" Description="System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                        <SecurityClass Name="FileIOPermission" Description="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                        <SecurityClass Name="FirstMatchCodeGroup" Description="System.Security.Policy.FirstMatchCodeGroup, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                        <SecurityClass Name="IsolatedStorageFilePermission" Description="System.Security.Permissions.IsolatedStorageFilePermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                        <SecurityClass Name="NamedPermissionSet" Description="System.Security.NamedPermissionSet"/>
                        <SecurityClass Name="SecurityPermission" Description="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                        <SecurityClass Name="StrongNameMembershipCondition" Description="System.Security.Policy.StrongNameMembershipCondition, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                        <SecurityClass Name="UnionCodeGroup" Description="System.Security.Policy.UnionCodeGroup, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                        <SecurityClass Name="UrlMembershipCondition" Description="System.Security.Policy.UrlMembershipCondition, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                        <SecurityClass Name="ZoneMembershipCondition" Description="System.Security.Policy.ZoneMembershipCondition, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
                    </SecurityClasses>
                    <NamedPermissionSets>
                        <PermissionSet
                                class="NamedPermissionSet"
                                version="1"
                                Unrestricted="true"
                                Name="FullTrust"
                                Description="Allows full access to all resources"
                        />
                        <PermissionSet
                                class="NamedPermissionSet"
                                version="1"
                                Name="Nothing"
                                Description="Denies all resources, including the right to execute"
                        />
                        <PermissionSet
                                class="NamedPermissionSet"
                                version="1"
                                Name="ASP.Net">
                            <IPermission
                                    class="AspNetHostingPermission"
                                    version="1"
                                    Level="Low"
                            />
                            <IPermission
                                    class="FileIOPermission"
                                    version="1"
                                    Read="$AppDir$"
                                    PathDiscovery="$AppDir$"
                            />
                            <IPermission
                                    class="IsolatedStorageFilePermission"
                                    version="1"
                                    Allowed="AssemblyIsolationByUser"
                                    UserQuota="1048576"
                            />
                            <IPermission
                                    class="SecurityPermission"
                                    version="1"
                                    Flags="Execution"
                            />
                        </PermissionSet>
                    </NamedPermissionSets>
                    <CodeGroup
                            class="FirstMatchCodeGroup"
                            version="1"
                            PermissionSetName="Nothing">
                        <IMembershipCondition
                                class="AllMembershipCondition"
                                version="1"
                        />
                        <CodeGroup
                                class="UnionCodeGroup"
                                version="1"
                                PermissionSetName="ASP.Net">
                            <IMembershipCondition
                                    class="UrlMembershipCondition"
                                    version="1"
                                    Url="$AppDirUrl$/*"
                            />
                        </CodeGroup>
                        <CodeGroup
                                class="UnionCodeGroup"
                                version="1"
                                PermissionSetName="ASP.Net">
                            <IMembershipCondition
                                    class="UrlMembershipCondition"
                                    version="1"
                                    Url="$CodeGen$/*"
                            />
                        </CodeGroup>
                        <CodeGroup class="UnionCodeGroup" version="1" PermissionSetName="Nothing">
                        	<IMembershipCondition
                                class="ZoneMembershipCondition"
                                version="1"
                                Zone="MyComputer" />
                            <CodeGroup
                                    class="UnionCodeGroup"
                                    version="1"
                                    PermissionSetName="FullTrust"
                                    Name="Microsoft_Strong_Name"
                                    Description="This code group grants code signed with the Microsoft strong name full trust. ">
                                <IMembershipCondition
                                        class="StrongNameMembershipCondition"
                                        version="1"
                                        PublicKeyBlob="002400000480000094000000060200000024000052534131000400000100010007D1FA57C4AED9F0A32E84AA0FAEFD0DE9E8FD6AEC8F87FB03766C834C99921EB23BE79AD9D5DCC1DD9AD236132102900B723CF980957FC4E177108FC607774F29E8320E92EA05ECE4E821C0A5EFE8F1645C4C0C93C1AB99285D622CAA652C1DFAD63D745D6F2DE5F17E5EAF0FC4963D261C8A12436518206DC093344D5AD293"
                                />
                            </CodeGroup>
                            <CodeGroup
                                    class="UnionCodeGroup"
                                    version="1"
                                    PermissionSetName="FullTrust"
                                    Name="Ecma_Strong_Name"
                                    Description="This code group grants code signed with the ECMA strong name full trust. ">
                                <IMembershipCondition
                                        class="StrongNameMembershipCondition"
                                        version="1"
                                        PublicKeyBlob="00000000000000000400000000000000"
                                />
                            </CodeGroup>
                        </CodeGroup>
                    </CodeGroup>
                </PolicyLevel>
            </policy>
        </security>
    </mscorlib>
</configuration>

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