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Subject Author Date
Domain Controller Security Policy Eric Eickhoff 08-12-2005
Posted by Steven L Umbach on August 14, 2005, 10:24 pm
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I tested using the UPN logon for administrator and that did not work so I
guess I was wrong about that. However I was able to reverse the change by
editing the GptTmpl.inf file for that security option however instead of
deleting the line for change administrator name edit instead to be
administrator which should allow you/her to logon as administrator after a
reboot. --- Steve


> The problem is that @ is used for UPN logon which expects a domain name
> after the @. I believe that the security option for change administrator
> password may change only the old "pre Windows 2000" type logon name as
> shown in a users account properties. It may be worth a try for her to try
> and logon via UPN as in administrator@mydomain.com since the UPN logon
> name for administrator may have not been changed. Another thing that may
> work if that fails is to find the GptTmpl.inf file for the policy she
> configured, delete the line for rename administrator account, and bump up
> the version number in the GPT.ini file. The link below refers to some of
> what I mentioned on editing such files including where they are and may be
> helpful. You could place the hard drive from here domain controller into
> another computer as a secondary/slave drive to edit those files if you can
> not do it any other way such as via Recovery Console or a bootable cdrom
> such as Barts PE. --- Steve
>
> http://support.microsoft.com/?kbid=226243
> http://support.microsoft.com/?kbid=267553
> http://www.nu2.nu/pebuilder/ --- Barts PE bootable CD/DVD
>
>> Greetings,
>>
>> I am stumped as to whether or not this can be resolved, but a client set
>> the Rename Administrator Account setting in the Domain Controller
>> Security Policy to a name containing the '@' character. Of course now,
>> she can't log on to the domain with that account and as luck would have
>> it -- she doesn't have any other accounts with domain admin privelages
>> and this is the only domain controller. It is a W2K3 DC. Does anyone
>> know if the DC Security Policy can be reset -- at least the Rename
>> Admininstrator Account setting (I know -- this sounds fishy from a
>> security standpoint and truly don't expect an answer on that one) or is
>> there a way to log on to the system using the account name with '@' signs
>> in it. I had her try entering DOMAIN\@ministrator in the username with
>> no luck. I am assumming that it is looking at the information after the
>> '@' sign as being the domain info and that is why it is failing. She
>> does have the password for the Active Directory Restore Mode if it helps.
>>
>> Anyone have any insight?
>>
>
>




Posted by Eric Eickhoff on August 16, 2005, 12:34 pm
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Thanks a bunch Steve -- that pointed me in the right direction and I got it
to where she is now able to log in the the DC as administrator -- thanks to
you and everyone else who offered sugestions.

-Eric


>I tested using the UPN logon for administrator and that did not work so I
>guess I was wrong about that. However I was able to reverse the change by
>editing the GptTmpl.inf file for that security option however instead of
>deleting the line for change administrator name edit instead to be
>administrator which should allow you/her to logon as administrator after a
>reboot. --- Steve
>
>
>> The problem is that @ is used for UPN logon which expects a domain name
>> after the @. I believe that the security option for change administrator
>> password may change only the old "pre Windows 2000" type logon name as
>> shown in a users account properties. It may be worth a try for her to try
>> and logon via UPN as in administrator@mydomain.com since the UPN logon
>> name for administrator may have not been changed. Another thing that may
>> work if that fails is to find the GptTmpl.inf file for the policy she
>> configured, delete the line for rename administrator account, and bump up
>> the version number in the GPT.ini file. The link below refers to some of
>> what I mentioned on editing such files including where they are and may
>> be helpful. You could place the hard drive from here domain controller
>> into another computer as a secondary/slave drive to edit those files if
>> you can not do it any other way such as via Recovery Console or a
>> bootable cdrom such as Barts PE. --- Steve
>>
>> http://support.microsoft.com/?kbid=226243
>> http://support.microsoft.com/?kbid=267553
>> http://www.nu2.nu/pebuilder/ --- Barts PE bootable CD/DVD
>>
>>> Greetings,
>>>
>>> I am stumped as to whether or not this can be resolved, but a client set
>>> the Rename Administrator Account setting in the Domain Controller
>>> Security Policy to a name containing the '@' character. Of course now,
>>> she can't log on to the domain with that account and as luck would have
>>> it -- she doesn't have any other accounts with domain admin privelages
>>> and this is the only domain controller. It is a W2K3 DC. Does anyone
>>> know if the DC Security Policy can be reset -- at least the Rename
>>> Admininstrator Account setting (I know -- this sounds fishy from a
>>> security standpoint and truly don't expect an answer on that one) or is
>>> there a way to log on to the system using the account name with '@'
>>> signs in it. I had her try entering DOMAIN\@ministrator in the username
>>> with no luck. I am assumming that it is looking at the information after
>>> the '@' sign as being the domain info and that is why it is failing.
>>> She does have the password for the Active Directory Restore Mode if it
>>> helps.
>>>
>>> Anyone have any insight?
>>>
>>
>>
>
>




Posted by Per Pedersen on August 15, 2005, 8:34 pm
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If you have a computer being member of the domain, you can try the following
easy method:

1. Logon locally with local administrator
2. Install AD administrative tools if you dont have it already onto the
computer
3. Use Run-As running the AD Users and Computers and type
domain name and of course the password for the @dministrator account.
4. You are now running AD Users and computer with the @dministrator
account.....
5. Edit the GPO to rename the "@dministrator" account "back" to original
"Administrator" or/and rename the account directly to avoid having to wait
until the GPO refreshes


> Greetings,
>
> I am stumped as to whether or not this can be resolved, but a client set
> the Rename Administrator Account setting in the Domain Controller Security
> Policy to a name containing the '@' character. Of course now, she can't
> log on to the domain with that account and as luck would have it -- she
> doesn't have any other accounts with domain admin privelages and this is
> the only domain controller. It is a W2K3 DC. Does anyone know if the DC
> Security Policy can be reset -- at least the Rename Admininstrator Account
> setting (I know -- this sounds fishy from a security standpoint and truly
> don't expect an answer on that one) or is there a way to log on to the
> system using the account name with '@' signs in it. I had her try
> entering DOMAIN\@ministrator in the username with no luck. I am assumming
> that it is looking at the information after the '@' sign as being the
> domain info and that is why it is failing. She does have the password for
> the Active Directory Restore Mode if it helps.
>
> Anyone have any insight?
>




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