we try to access from a W2K8R2 Domain Member Server to a CIFS Cluster Share on OES2SP2 Server, where there is AD Integration.

But this didn't working.

When whe try this from a W2K3R2 Domain Member Server this is working like expected.

Can anybody tell us, what is the Different or what can/must whe Change on W2K8R2 to make the Connection also possible?