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Logon Authentication Problem

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by mark.smith

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My employer has 15 LAN sites worldwide conected by a WAN. We have an NT 4.0 SP6a BDC at 14 of the sites and we use WINS. We have an NT 4.0 SP6a PDC and 4 BDC's at the 15th site(HQ). The problem is we have users that when logging on (NT 4.0 SP 4 Workstations) are being authenticated by a BDC at a remote site instead of their local BDC. This also happens to users at HQ occasionally. What is the best way to correct this? Thanks in advance. - Mark S.

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by jason.barnett

Mark,

We had the same problem. We discovered a utility called SETPRFDC, which comes with the full download of Service Pack 4 and above (you can extract the Service Pack files with /X and copy setprfdc.exe to %windir%\system32). It is also included in later versions of the Resource Kit.

Use the following syntax (probably best to run it from each sites master login script):

SETPRFDC ,,,....

This will attempt validation with the preferred DC and if that fails will try all subsequent DC's so you can configure this to use the closest/faster logical WAN links.

If this doens't make sense, e-mail me or if you need setprfdc.exe also e-mail me.

Regards,

JB.

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