Issue: Computer on trusted domain cannot access DFS share because it isn’t using the FQDN.
1. Remove all DFS namespace for the domain-based DFS in the DFS management console or for the standalone namespace. (Note that all DFS member servers need to have these steps done to make this work)
2. Create the following registry entry
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dfs Value Name: DfsDnsConfig Data Type: REG_DWORD Value Data: 0 or 1
3. Change the DfsDnsConfig value to 1
4. Reboot the DFS member server or restart the DFS Namespace service.
4. Re-create the domain-based/standalone DFS namespace in DFS management console.
5. Afterwards, all DFS namespace should use a FQDN of the DFS member server in the Namespace Server list.