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Active directory not working after adding three new users.

Hi guys,

I added three new users to the active directory yesterday evening.  This morning I've had a number of users unable to connect to the servers and also not recieving emails.  As soon as I deleted a number of unwanted users everything went back to normal.

Please help.


Mbavisi
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mbavisi
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mbavisi
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1 Solution
 
jcdesign4uCommented:
Have you tried the allmighty reboot of the server?
Are there any weird errors in the eventviewer?
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Steve AgnewSr. Systems EngineerCommented:
Adding users shouldn't have caused any issues.  As far as email messing with where Exchange puts OU's/Accounts is a BAD THING.  But just adding accounts anywhere shouldn't cause problems.  My best guess would be this is a coincidence.  Reboot obviously is the first thing.  Do you have multiple domain controllers?  What events are you having in the event logs, maybe licensing issues?  if so, start and stop licensing or again reboot.  Did you change network settings?  Did your DHCP stop responding (check services if you use Microsoft DHCP) Did someone plu in a device (usually trying to get extra ports) that has DHCP and messes up clients, these must be removed or dhcp disabled and then reboot the clients that no one can log on.

just a few ideas as the accounts you created probably aren't the problem.....
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mbavisiAuthor Commented:
Guys,

I've just come to a terrible disaster.  I've got Active Directory falling down to pieces.  I have 2 DCs which are not talking to each other.  The following events I have seen are:

Event Id: 2042  Source:  NTDS Replication
Event Id: 1864  Source:  NTDS Replication
Event Id: 2093  Source:  NTDS Replication
Event Id: 1079  Source:  NTDS General


There's literally about a few hundred from today.  My Exchange has stopped working, nearly all outlook clients have been disconnected.  Rebooted all servers twice.  Rebooted all client machines twice.  I've seen the links and some say that you need to demote the affected DC others say to force replication through command line.

The issue is that I have these events on both my DCs.  I'm not sure which one is the affected one or if I should do both the servers.

Immediate response is much appreciated.


Regards

Mbavisi
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Steve AgnewSr. Systems EngineerCommented:
sounds like a network problem can you ping each server for each server ping server1 from server2 and ping server2 from server1 ?

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mbavisiAuthor Commented:
I can reach all devices at all levels :

IP
NETBIOS
domain name (DNS)


According to the above events there is replication issues between the DCs.  It has the tombstone lifetime 180 days which has passed, please advice...

Thanks

Mbavisi
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mbavisiAuthor Commented:
Thanks Guys,

I've resolved the myself issue by demoting one of the DCs.  All roles got transferred to the remaining DC.  The Exchange is now up and running since its nw qurying the right active directory.

Thanks for your help any way.

Administrators can you please close this off.

Mbavisi
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jcdesign4uCommented:
Good  job!
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