My remote client is getting a 'An Extended error has occurred' when trying to access a shared folder on my Windows Server 2000 box. A site-to-site vpn link is setup between the 2 sites and at the moment all traffic is allowed through the link.
The client is on a different domain to ours so there is no trust relationship between the domains and the client has to enter a username/password when connecting to the share. Share permissions and File permissions are set to allow the user account full access to the shared folder.
Any ideas on how to fix this?