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Promoting BDC to PDC; Users-No DC Found

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by spragueca 1 view

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HI,

When I promote our BDC to a PDC (Both are NT4/SP6a) users on the network get a "No DC Found" when they login. Looking in Server Manager shows that the old PDC is now a BDC and vice-versa. We are using an LMHOST file to preload our servers since they all have static IPs... I thought this was the problem because it specifies which address is the PDC but after updating the file logins were still failing. Does anyone have any suggestions or have seen something similar? I didnt find anythingin TechNet about it. I've been leaning towards a possible problem with static entries in WINS or LMHOSTS but havent found anything.... If anyone could shed some light on this it would be GREATLY appreciated!!!!! Thanks!

3 replies

by frobo

Hi,

if you are using WINS for Names resolution then is there your Problem. To fix your Problem open an CMD window on each Server and type nbtstat -RR to renew the WINS-Registration of the Server.
If you wan?t do that remote so type on an
Admin Console: nbtstat SERVERIP -RR
do this for each DC in your Domain. The Problem is quite simple. Each WINS-Client is registering it?s Name every monrning you turn him on, an release it?s Name every evening. In the WINS-DB there is an TTL field, how long the Name would be alive, then you have another Field for how long it itakes to deactivate. Normaly you boot up your server, and then they have to run for year?s, over WAN you get a problem couse of your TTL field for the Servers Name !

This is changed since SP4 for NT, nbtstatt has got the new -RR Command, specialy for Servers to reregister their names on WINS !

Hop it helps you

Frobo

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