Remote GPupdate not working - The remote procedure call was cancelled

Hi everyone!

I'm trying to do a remote gpupdate of my xp clients in our 2012 AD domain, but it's giving me the "The RPC was cancelled"8007071a error. For some machines i get the error "access denied".

Another problem i'm having, is that, when I do a gpupdate on the clients, the correct gpo's only are being applied from my secondary DC. When he "receives" the gpo's from the PDC, it seems that nothing is happening (wrong gpo's, etc)

I checked the DFS health and created new gpo's to verify the replication (OK)

Can anyone help me with these issues?

Thanks alot!