Active directory is starting

I restarted one of our DCs this evening after some updates and it decided to stick for about 5 mins on "Active Directory Starting.." during the startup procedure.

It eventually sorted it's self out and gave me the login screen and I don't see any adverse affects(?!).

In the event log, I have a weird event from DHCP:

The DHCP service failed to see a directory server for authorization.

Can anybody shed any light on a reason? Maybe someone has seen it before?
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JohnGerhardtAsked:
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nettek0300Commented:
Because there was a delay in Act Dir. starting, the DHCP probably completed its startup process before AD was completely started.  I would try to restart DHCP again now that AD is started.  If this does not work, try restarting the server again to see if AD starts slow.  Do you have any other errors other than the DHCP event?
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tdukie13Commented:
Hi,
I would recommend installing the Windows Support Tools from the Microsoft Web Site or server installation CD's. Run a dcdiag and netdiag to ensure all components are happy and healthy.

Best,
T
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Mike KlineCommented:
Are you seeing any 4013 and 4015 events for DNS?
Thanks
Mike
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JohnGerhardtAuthor Commented:
Hi guys thanks for the responses...
Mike: I will check for the DNS events but I don't think do, do you have an idea?!
tdukie13: I have run dcdiag and netdiag, sorry should have put that in the details in the question, this was my first reaction. There were no errors...
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JohnGerhardtAuthor Commented:
Sorry hit enter to quickly!
nettech0300: I was pretty sure this was the reason that DHCP had the problem but it is up find now, I think this s more a sympton of the other problem... Any Ideas?
Thanks guys..
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JohnGerhardtAuthor Commented:
mkline..
I take it back I do have a 4015 DNS error message in the event log..
 
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Mike KlineCommented:
Is this DC pointing to itself for primary DNS and another box for secondary DNS?
Looks like you are running into the "race condition" issue.  Basically DNS and AD "race" to startup during boot.
We had that on a few of our DCs.  We flipped it and now have those DCs point to another box/DC for primary DNS and itself as secondary.
Helps with this issue.
Thanks
Mike
,
 
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JohnGerhardtAuthor Commented:
Mike,
Dead on! I will make the changes.
A quick question though will this make any different after the machine has booted?
BTW, just read you block, congrats on the MVP.
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Mike KlineCommented:
No it will be fine after the machine boots.   There was a really great discussion last fall over at activedir about the DNS settings
http://www.activedir.org/ListArchives/tabid/55/forumid/1/postid/31346/view/topic/Default.aspx
At the time we didn't change ours (nothing was broken) but after we started seeing the errors we did and have been ok since.
Thanks for the words on the MVP...still see myself as just another IT guy trying to make it through the day :)
Thanks
Mike
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JohnGerhardtAuthor Commented:
Thanks!
Maybe straying from the topic but can I just ask another question that I personally always stuggle with, have a feeling you will have the answer!
Should you use a loopback address for DNS server configuration on a NIC when the DNS server is local, or it's IP?
 
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Mike KlineCommented:
I've always used its IP and not the 127 loopback address...just always done it that way on my end.
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JohnGerhardtAuthor Commented:
Ok.. Thanks so much.. The points are are yours for a perfect diagnosis!
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Mike KlineCommented:
Thanks man, have a great holiday weekend!!
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JohnGerhardtAuthor Commented:
Mike,
Really impressive, even with my rather sparse question you managed to work out what the problem was in just a couple of comments. It has been a while since I was on this side of the Q and A process and it is certainly great to get such a brilliant answer.

I left work wondering what the problem was and will return tomorrow triumphant (thanks to you!).

Thanks so much!
John
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