Reboot as prompted. Make sure replication completes and your other domain controllers know that the computer name has changed before proceeding. If so, you should see an alert in server manager on the top-right corner. Click it, you will be prompted to promote this server to a domain controller. Select Role-based or feature-based installation and click Next Select this server and click Next. If prompted to install dependencies such as management tools , say Yes, click Add Features and continue… Skip the features page and click Next Active Directory Domain Services information page displays.
Click Next. Confirmation displays. Allow the server to restart automatically if needed. Click Install. Click Close. Give it 20 minutes or so.. When you click it, you will see Additional steps are required to make this machine a domain controller.
Follow this link and select promote this server to a domain controller. Verify the correct domain is listed and a domain admin is listed for the credentials and click Next. Domain controller options displays. Enter a directory services restore mode password and make a note of it. DNS options displays: You may get a warning that the delegation for this DNS server cannot be created… that is very normal.
Additional options displays. You should be able to leave Install from media unchecked. Replication from: pick your best domain controller or the one with the best network connection. Prerequisites check: Warnings are normal, especially regarding domain functional level, delegation for DNS, and security.
Errors are not normal. Click Install if everything looks OK. The server will reboot. After reboot, give the server some time to replicate active directory and DNS 30 minutes to an hour.
You may want to reboot again for good measure. Remove the secondary DNS server. Test your ability to resolve internal and external DNS ping google. This means a user account that has never logged on to that workstation before. It is normal to see one of these per reboot. If you see many, there is a problem. To rename a DC using netdom commands, perform the following steps: Make a full backup or image of your domain controller! Open an administrative command prompt on the target DC.
I would skip the FQDN unless you have multiple domains in your forest, or your netdom is having trouble resolving the names without it. Check current names listed for this server.. When the server restarts, open an administrative command prompt.
Recommended tests can be found in this section: Testing your newly promoted domain controller Netdom references: Technet: Server — how to use netdom to rename a domain controller Spiceworks: Server R2 and — how to use netdom to rename a domain controller Selfish plug time sorry!
I ran the netdom commands in DSR mode and it changed it back to the correct domain. Thanks a lot for your article. It saved my day. September 13, at pm. Abel Munjalu says: Hello, Thanks for above info but once Domain name is grayed out. September 23, at am. John says: Hi. Any suggestions on how I might be able to successfully complete the demotion?
Thanks in advance for any help! December 28, at pm. Amira Armond says: Hi John, You need to solve the netlogon service first. Reboot Check event log for specific errors Reply. Though Netdom tool is old but its does updated with new server edition and meant to avoid DC demotion and promotion and sub sequent service disruption Reply.
Now, I've read some pretty contradicting articles on how a domain controller should be renamed just changing the computer's name in system properties, using NETDOM, etc. How should I do this? I personally just want to go into system properties and change the computer's name - but I worry this may impact our domain. MVP-Directory Services. Also you check the below link for the issues which might arise out of it and how to mitigate the same.
The proper way of renaming domain controllers involves the use of netdom utility rather than the System applet in the Control Panel.
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