Certain users denied access to mapped drives after a PDC/BDC shuffle

We have recently demoted an NT4.0 server to BDC and configured our new Windows 2000 server as the PDC. Ever since, we find certain users have been denied access to mapped drives.

We have recently demoted an NT4 server to BDC (backup domain controller) and configured our new Windows 2000 server as the PDC (primary domain controller). Ever since, we find certain users have been denied access to mapped drives, and we need to disconnect then reconnect them (we are then prompted for password) so they can work again. Any idea how to stop this or what is causing it?
The process you took doesn't sound right. The Win2000 server should have been an upgrade of a PDC. If you simply installed a Windows 2000 server, then made it an AD controller with a domain name that matched the old domain, you have created a situation where you really have two domains. The first domain will be the NT 4.0 domain and the second the AD domain. They may be called the same thing, but the domains are not the same. If you turn off the NT 4.0 server, I would image that ALL of you clients will fail until you rejoin the AD domain.
This was first published in April 2003

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