Dears, We have a portal running fine and we want to apply Code Access Security by defining custom policy file. Currently we use the full trust level. We started by uninstalling our custom webparts.dll from gac (full trsted) and putting it in our portal bin folder in IIS. And then changing the trust level in our portal web.config to "ourCustomPolicyFile" which is copied from "WSS_Medium". Finally we restarted the IIS and when browsing the portal a security exception thrown: [SecurityException: Request failed.] Microsoft.SharePoint.Publishing.PublishingLayoutPage..ctor() +39 CMA.Internet.WebParts.HomePageWithTabs..ctor() +41 This is because we used a class inherited from "Microsoft.SharePoint.Publishing.PublishingLayoutPage". And based on the middle of the page http://msdn.microsoft.com/en-us/library/ee909485%28v=office.12%29.aspx this class should be fully trusted accessed So how can I modify my custom policy file to fix this exception. Note: Microsoft.SharePoint.Publishing.dll is located in the GAC Thanks, Regards, Anas N. Alhussein | Sharepoint Senior Developer

Hi Anas, Thanks for your post. If you want to use the Microsoft.SharePoint.Publishing.PublishingLayoutPage class in your project, you must set the trust level to “Full”. Or you have to deploy the web part assembly to GAC. From the SDK documentation, the PublishingLayoutPage class requires full trust. This means that the assembly containing this class must be deployed to the global assembly cache or must be fully trusted. http://msdn.microsoft.com/en-us/library/ee909485%28v=office.12%29.aspx Thanks, Wayne TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com

Hi Anas, Would you please let us know how is your problem going? Is the suggestion helpful for your issue? If you need further assistance, please feel free to let us know. Thanks, Wayne Fan TechNet Subscriber Support in forum If you have any feedback on our support, please contact tnmff@microsoft.com.

Thanks Wayne, It is helpful, I am working on it. Your cooperation is highly appreciatedRegards, Anas N. Alhussein | Sharepoint Senior Developer