Problem accessing DFS subfolders

User cannot access \\corp.company.com\dfs\company\subfolder. Subfolder is missing, however user can access \\corp.company.com\dfs\home\%username% which has offlinefiles enabled.

When I loggon with my admin account I get access denied when trying to access \\corp.company.com\dfs\company.

It works from other computers however, so the problem is isolated to this specific client.

I found this solution: www.sirkit.ca/wiki/2012/11/windows-domain-dfs-namespace-access-is-denied-using-domain-fqdn-access-allowed-using-server-unc-paths-directly

1.  Disable offline files
Control Panel -> Sync Center -> Manage Offline Files -> Disable Offline Files

2. Clear the offline file cache
This sets a temporary registry entry which is read on start-up and runs the cache wipe.
Elevated Command Prompt
reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Csc\Parameters /v FormatDatabase /t REG_DWORD /d 1 /f

3. Reboot
You must reboot to successfully wipe the offline file cache

4. Test DFS path
\\corp.company.com\dfs\company\subfolder

5. Re-enable Offline Files
Control Panel -> Sync Center -> Manage Offline Files -> Enable Offline Files -> Reboot

Slow response DFS namespace

http://support.microsoft.com/kb/244380

http://serverfault.com/questions/50789/long-pause-when-accessing-dfs-namespace

KB244380 says:
“The DFSDnsConfig registry key must be added to each server that will participate in the DFS namespace for all computers to understand fully qualified names.”

We thought this meant that the registry key has to be set on the DFS namespace servers only, not realising that it was also required on the domain controllers. After we set DfsDnsConfig to 1 on our domain controllers (and restarted the “DFS Namespace” service), the problem vanished.