Thanks.
This is exactly what I ended up doing yesterday when I realized that it could 
be done in the GUI after all.

I just created a simple batch file for it:

@echo on
netdom remove %computername% /force
netdom join %computername% /domain:abc.local /userd:jdoe /passwordd:* /reboot

It will prompt for the password of the domain account specified by "/userd:" 
and will reboot after the default of 30 seconds.

Charlie Sullivan
Sr. Windows Systems Administrator

-----Original Message-----
From: [email protected] [mailto:[email protected]] On 
Behalf Of Ben Scott
Sent: Monday, March 17, 2014 10:17 PM
To: [email protected]
Subject: Re: [NTSysADM] Rejoin Computer to Domain Without Removing

On Mon, Mar 17, 2014 at 4:44 PM, Charles Sullivan <[email protected]> 
wrote:
> Is there a way I can rejoin a computer to the domain without first 
> removing it?  This would be for a scenario where the computer object 
> has been removed, or something similar to that.

  Procedure I use is:

1. Log on to computer as local admin
2. Tell computer to leave the domain
2a. Give it bogus credentials when it prompts for an account to connect to the 
domain with 2b. Don't reboot 3. Tell computer to join domain 3a. Give it proper 
credentials this time 3b. Reboot when prompted

  Item 2a is to prevent the computer from removing anything from Active 
Directory.  That way, when you (re)join it, there's a greater chance that 
things will still be there.

  Item 2b is to prevent the computer from ever acting on the fact that it's not 
a domain member anymore (and uninstalling software, reversing Group Policy, 
screwing up permissions, etc.).

  One could unplug the network cable for step 2 instead, I suppose.

  Credit to Bonnie Miller for the idea.

-- Ben




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