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Active Directory

Posted on 2016-08-02
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Last Modified: 2016-08-04
I was looking at our AD servers as I just took them over from a previous administrator and things look a bit of a mess. First off I ran the best practice analyzer on AD Domain Services and got a couple of critical errors. I attached the screenshot. We are running Win 2008 R2. We have a number of DCs. Can this be resolved without any impact?
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Question by:InSearchOf
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Expert Comment

by:FOX
ID: 41739130
Screenshot is not attached
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Author Comment

by:InSearchOf
ID: 41739192
Ooops. Sorry about that.
ad-best-practice.docx
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Expert Comment

by:FOX
ID: 41739213
Those are the only 2 errors you have?  The first one is pretty self explanatory.  I would first check to see if Deny Access to this computer is set to Everyone.  If it isn't then grant access to this computer from the network to the groups it has mentioned. For your second error I would run a gpupdate /force on that server with a reboot.
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Author Comment

by:InSearchOf
ID: 41739215
I was able to resolve the first error. But not the second because I do not see a "Default Domain Controller Policy"
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Expert Comment

by:FOX
ID: 41739223
Open Group Policy Management on one of your DCs and expand Group Policy Objects and you will see it there.
It is suppose to be linked to the Domain Controllers OU as well
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Author Comment

by:InSearchOf
ID: 41739231
Aha. It says its linked so why do I get the the error?
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Expert Comment

by:FOX
ID: 41739239
do a gpupdate /force from an elevated command line and then reboot.
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Author Comment

by:InSearchOf
ID: 41739246
When I expand the Domain Controller OU in GPMC I see the "Domain Controllers Policy" gpo is linked
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Expert Comment

by:FOX
ID: 41739250
Yes you mentioned that. I assume that DC is in the Domain Controller OU as well.  On that DC that has that error, open an elevated command prompt   gpupdate /force.    Then do a reboot  on it.
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Author Comment

by:InSearchOf
ID: 41739260
Sorry I got wrong. There is no "Default Domain Controller Policy" in GP objects. It looks like someone replaced it or renamed with "Domain Controllers Policy"
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FOX earned 2000 total points
ID: 41739267
1. In Group Policy Management verify what Group Policy is linked to the Domain Controllers OU
2. Find a functional domain controller and verify what groups it belongs to
3. Set the domain controller that is faulting out to the same group memberships and remove any that don't match the functional one.
4.  As stated above, run a gpupdate /force on the domain controller in question and reboot.
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Author Comment

by:InSearchOf
ID: 41739271
I will do a gpupdate /f with a reboot after hours. I do not want to do it during production.
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Author Comment

by:InSearchOf
ID: 41739274
All my DCs are flagging the same error
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Expert Comment

by:FOX
ID: 41739305
Link the Default domain controller policy to the domain controller OU

https://technet.microsoft.com/en-us/library/ff646920(v=ws.10).aspx
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Author Comment

by:InSearchOf
ID: 41739370
Like I said there is no default controller policy. It is not there
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Author Comment

by:InSearchOf
ID: 41740616
I tried the gpupdate /f with a reboot and still get the same error complaining about the "Default Controllers Policy" not being applied to the "Domain Controllers OU" when I run the Best Practice. When I go to the "Domain Controllers" OU in the GPMC I have a "Domain Controllers Policy" gpo linked.
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