How can I reset the administrator password for a Windows 2008 R2 DC?
It appears that none of the Domain Admin passwords/accounts are valid for this given DC, and there are several machines actively using it. Id strongly prefer not to rebuild the domain… Any other suggestion would be welcome.
I am able to enter recovery mode, but this is running Minnt, and it's not running the DC's installation.
Best Answer
This trick is not for remote! It's only in local, to ensure some security!
Require :
Follow these step :
Boot on the windows cd
Select the language
Select "repair"
Clic next
Select "command prompt"
type
C:
to be in the right drive.cd to C:\Windows\System32
MOVE Utilman.exe Utilman.exe.backup
(backup of the .exe)COPY cmd.exe Utilman.exe
(that's the trick)Restart the server
On the login screen, clic on the help utility, or shortcut windows+u (command prompt will show)
type
net user administrator (password)
(type only net user for more information about the command)Restart the server, and don't forget to rename the Utilman.exe.backup to Utilman.exe.
That should do the trick.
Hope this will help.