Forgot your domain admin password? Whoops.
On a Win2k8r2 domain controller:
- Boot with the installation media (or any other WinPE kind of media)
- Go to the System32 directory
-
ren utilman.exe utilman.exe.bak
-
copy cmd.exe utilman.exe
- Reboot the system
- At the logon screen, press Windows Key + U. A command prompt will start.
-
net user Administrator "!mynewpass123"
- Log in, start a command prompt.
-
del utilman.exe
-
copy utilman.exe.bak utilman.exe
done :-)