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Windows 2008 standard SP1 - Trying to remove demote domain controller from Domain. the dependency service or group failed to start

Posted on 2016-07-14
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Last Modified: 2016-09-27
Windows 2008 standard SP1 - Trying to remove domain controller from Domain.
We have 4 DCs.  Trying to demote DC4

Followed the procedure below but got an error after STEP10:
Error:
The operation failed because:
File replication service: the dependency service or group failed to start.
"the dependency service or group failed to start"

Any ideas? Thank you in advance!

1.      Click Start, click Run, type dcpromo, and then press ENTER.
2.      On the Welcome to the Active Directory Domain Services Installation Wizard page, click Next.
3.      If the domain controller is a global catalog server, a message appears to warn you about the effect of removing a global catalog server from the environment. Click OK to continue.
4.      On the Delete the Domain page, make no selection, and then click Next.
5.      If the domain controller has application directory partitions, on the Application Directory Partitions page, view the application directory partitions in the list, and then remove or retain application directory partitions, as follows:
o      If you do not want to retain any application directory partitions that are stored on the domain controller, click Next.
o      If you want to retain an application directory partition that an application has created on the domain controller, use the application that created the partition to remove it, and then click Refresh to update the list.
6.      If the Confirm Deletion page appears, select the option to delete all application directory partitions on the domain controller, and then click Next.
7.      On the Remove DNS Delegation page, verify that the Delete the DNS delegations pointing to this server check box is selected, and then click Next.
8.      If necessary, enter administrative credentials for the server that hosts the DNS zones that contain the DNS delegation for this server, and then click OK.
9.      On the Administrator Password page, type and confirm a secure password for the local Administrator account, and then click Next.
10.      On the Summary page, to save the settings that you selected to an answer file that you can use to automate subsequent operations in Active Directory Domain Services (AD DS), click Export settings. Type a name for your answer file, and then click Save. Review your selections, and then click Next to remove AD DS.
11.      On the Completing the Active Directory Domain Services Installation Wizard page, click Finish.
12.      You can either select the Reboot on completion check box to have the server restart automatically or you can restart the server to complete the AD DS removal when you are prompted to do so.
13.      Open Server Manager. Click Start, point to Administrative Tools, and then click Server Manager.
14.      In Roles Summary, click Remove Roles.
15.      If necessary, review the information on the Before You Begin page, and then click Next.
16.      On the Remove Server Roles page, clear the Active Directory Domain Services check box, and then click Next.
17.      On the Confirm Removal Selections page, click Remove.
18.      On the Removal Results page, click Close, and then click Yes to restart the server
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Question by:TFHDIT
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3 Comments
 
LVL 96

Accepted Solution

by:
Lee W, MVP earned 500 total points
ID: 41711523
Did you run DCDIAG and REPADMIN /SHOWREPL before ever trying to demote to ensure AD is heathy?  If not, start there.  Fix whatever problems exist.

The problems are unfixable you can force demote with the DCPROMO /FORCEREMOVAL switch and then you may have to use NTDSUTIL to removed the failed DC from AD.
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Author Comment

by:TFHDIT
ID: 41711569
Thank you!  I ran DCDiag and Repadmin/showrepl
Test results = passed.

I will run dcpromo /forceremoval next, then NTDSUTIL to cleanup .

Thank you!!
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