After you disable the client endpoint components in Microsoft Forefront Unified Access Gateway (UAG) 2010, you cannot redirect resources to access your local computer resources in the Remote Desktop Services (RDS) session.
When the client components are disabled, the UAG Policy engine blocks all resource-redirection features.
This problem is fixed in the update that is described in Description of Rollup 1 for Forefront Unified Access Gateway 2010 Service Pack 3.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
To enable resource redirection when the client endpoint components are disabled, follow these steps:
Apply the update that is mentioned in the "Resolution" section.
Create the following registry value:
Registry subkey location: HKEY_LOCAL_MACHINE\Software\WhaleCom\e-Gap\von\UrlFilter
DWORD name: RDSResourceMappingWithoutUAGComponents
DWORD Value: 1
Restart the Internet Information Services (IIS) service.
For more information about software update terminology, see Description of the standard terminology that is used to describe Microsoft software updates.