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PC's not authenticating to the PDC.

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8 replies

by skammeyer

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I have a problem that I have inherited after just starting with the company. They currently have a bizarre issue where the users are authenticating to the BDC instead of the PDC. The part that is confusing me is, if the BDC goes down, the PDC won't authenticate. Any suggestions?

8 replies

by ds9

Goto Start, Programs, Administrative tools, server manager, Computer, and there select "Synchronize the entire domain". this will insure that the PDC & BDC have all the same user and security information.

Also, remember that if the PDC is busy when someone trys to login, the BDC will perform the function. Thats one of the advantages of having one or more BDC's.

Regards
George

by skammeyer

I've tried synchronizing the domain several times as well as testing when users log in. The problem still exists afterwards.

-Scott Kammeyer
Mobility Electronics

by david.gruenewald

Check your WINS db and make sure that there are entries for your domain(s) and that the DCs have the correct entries in them.

by estebandelatorre

You have a syncronization problem. As BDC and PDC should only contains S.O. and perhaps a dns wins and DCHP, I RECOMMEND YOU TO:

1.- BRING DOWN THE PDC
2.- PROMOTE THE BDC TO PDC
3.- ENSURE THAT EVERYTHING IS WORKING
4.- REMOVE MACHINE PDC ACCOUNT FROM DOMAIN
5.- START EX-PDC AND JOIN IT AGAIN TO DOMAIN. IT SHOULD BE RECOGNIZED AS A BDC.

IF YOU CAN'T GO THROUGH STEP 5 SUCCESFULLY, REINSTAL NT AND REPEAT STEP 4 AND 5.

THIS RARE THINGS MAY HAPPEN DURING THE MOVE OF BDC OR PDC?S FROM ONE DOMAIN TO ANOTHER, THE SID BECAME CORRUPTED FOR THE CURRENT DOMAIN.

GOOD LUCK

by ntoz

Use the resouce kit utility DOMAIN Monitor to look at the syncronization of your PDC's and BDC's. If the PDC was offline for a period of time, a workstation will setup a secure channel with the BDC, even if its over a wan connection and continue to use it for authentication going forward. You can also use the utility to see if the BDC's and PDC are out of synch.

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